GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Ash Tray Lamp

In the ash tray housing

Lighting Systems Component Views

Lighting Systems Connector End Views

Audio Alarm Module

In the convenience center

Lighting Systems Component Views

Lighting Systems Connector End Views

Automatic Day-Night Mirror with Compass

On the top inside center of the windshield, part of the inside rearview mirror

Stationary Windows Component Views in Stationary Windows

Stationary Windows Connector End Views in Stationary Windows

Auxiliary Heater Control Switch

At the rear of overhead console molding, in the headliner, part of HVAC controls

Heater Blower Controls Component Views in Heater and Ventilation (Non-A/C)

Heater Blower Controls Connector End Views in Heater and Ventilation (Non-A/C)

Auxiliary HVAC Control Lamp, Front

On the front of the overhead console, part of the HVAC controls

HVAC Component Views in HVAC Systems w/ A/C Manual

HVAC Connector End Views in HVAC Systems w/ A/C Manual

Auxiliary HVAC Control Lamp, Rear

At the rear of the overhead console molding, in the headliner, part of the HVAC controls

HVAC Component Views in HVAC Systems w/ A/C Manual

HVAC Connector End Views in HVAC Systems w/ A/C Manual

Backup Lamp, Left Side (Cab Chassis)

At the rear of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Backup Lamp, Left Side (Pickup/Utility)

At the rear of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Backup Lamp, Right Side (Cab Chassis)

At the rear of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Backup Lamp, Right Side (Pickup/Utility)

At the rear of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Backup Lamp Switch (MG5)

On the left side of the transmission, below the shift tower

Lighting Systems Component Views

Lighting Systems Connector End Views

Backup Lamp Switch (MW3)

On the left top of the transmission

Lighting Systems Component Views

Lighting Systems Connector End Views

Body Control Module (Luxury)

Located Within the Center Floor Console

Body Control System Component Views in Body Control Systems

Body Control System Connector End Views in Body Control Systems

Cargo Lamp (Pickup)

At the rear center of the cab, above the rear window, part of the center high mounted stop lamp

Lighting Systems Component Views

Lighting Systems Connector End Views

Cargo Lamp Switch (Pickup)

In the center of the IP, to the left of the radio

Lighting Systems Component Views

Lighting Systems Connector End Views

Center High Mount Stoplamp (Pickup)

Center High Mount Stoplamp (Pickup)

Lighting Systems Component Views

Lighting Systems Connector End Views

Center High Mount Stoplamp (Suburban/Utility)

Center High Mount Stoplamp (Suburban/Utility)

Lighting Systems Component Views

Lighting Systems Connector End Views

Clearance Lamp, Left Front

In the front of the left rear fender

Lighting Systems Component Views

Lighting Systems Connector End Views

Clearance Lamp, Left Rear

In the rear of the left rear fender

Lighting Systems Component Views

Lighting Systems Connector End Views

Clearance Lamp, Right Front

In the front of the right rear fender

Lighting Systems Component Views

Lighting Systems Connector End Views

Clearance Lamp, Right Rear

In the rear of the right rear fender

Lighting Systems Component Views

Lighting Systems Connector End Views

Convenience Center

Under the left side of the IP, on the bulkhead

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Courtesy Lamp, IP LH

Located under the left side of the IP near the knee bolster

Lighting Systems Component Views

Lighting Systems Connector End Views

Courtesy Lamp, IP RH

Located under the right side of the IP near the knee bolster

Lighting Systems Component Views

Lighting Systems Connector End Views

Courtesy Lamp, Door LF

Located within the left front door assembly

Lighting Systems Component Views

Lighting Systems Connector End Views

Courtesy Lamp, Door LR

Located within the left rear door assembly

Lighting Systems Component Views

Lighting Systems Connector End Views

Courtesy Lamp, Door RF

Located within the right front door assembly

Lighting Systems Component Views

Lighting Systems Connector End Views

Courtesy Lamp, Door RR

Located within the right rear door assembly

Lighting Systems Component Views

Lighting Systems Connector End Views

Daytime Running Lamps (DRL) Module

Under the left side of the IP, taped to the IP harness

Lighting Systems Component Views

Lighting Systems Connector End Views

Daytime Running Lamps (DRL) Relay

Under the left side of the IP, at the lower center of the convenience center

Lighting Systems Component Views

Lighting Systems Connector End Views

Daytime Running Lamps (DRL)/Radio Override Switch (Z56)

In the center of the IP, to the left side of the radio

Lighting Systems Component Views

Lighting Systems Connector End Views

Dome Lamp, Front

Approximately 22 cm (8.7 in) from the windshield centerline, in the headliner

Lighting Systems Component Views

Lighting Systems Connector End Views

Dome Lamp, Rear

Approximately 22 cm (8.7 in) from the windshield centerline, in the headliner

Lighting Systems Component Views

Lighting Systems Connector End Views

Door Jamb Switch, Cargo

At the rear body opening, part of the right rear cargo door contactor

Lighting Systems Component Views

Lighting Systems Connector End Views

Door Jamb Switch, Left Front

At the left end of the IP

Lighting Systems Component Views

Lighting Systems Connector End Views

Door Jamb Switch, Left Rear

At the center inside edge of the left side B Pillar

Lighting Systems Component Views

Lighting Systems Connector End Views

Door Jamb Switch, Right Front

At the right end of the IP

Lighting Systems Component Views

Lighting Systems Connector End Views

Door Jamb Switch, Right Rear

At the center inside edge of the right side B pillar

Lighting Systems Component Views

Lighting Systems Connector End Views

Door Lock Control Module

Middle up the Left "C" Pillar

Power Door Systems Component Views in Power Door Systems

Power Door Systems Connector End Views in Power Door Systems

Endgate Indentification Lamps (Dually, Fleetside)

Beneath Tailgate

Lighting Systems Component Views

Lighting Systems Connector End Views

Fog Lamp Relay

Under the left end of the IP, on the lower left side of the convenience center

Lighting Systems Component Views

Lighting Systems Connector End Views

Fog Lamp Relay (Z71 Tahoe/Limited)

Under the left end of the IP, on the the fog lamp harness

--

Lighting Systems Connector End Views

Fog Lamp Switch

On the center of the IP, to the right of the steering column shift lever

Lighting Systems Component Views

Lighting Systems Connector End Views

Fog Lamp, Left Side

At the left lower edge of the front bumper and the air deflector

Lighting Systems Component Views

Lighting Systems Connector End Views

Fog Lamp, Right Side

At the right lower edge of the front bumper and the air deflector

Lighting Systems Component Views

Lighting Systems Connector End Views

Garage Door Opener

Located within the Overhead Console

Garage Door Opener Component Views in Garage Door Opener

Garage Door Opener Connector End Views in Garage Door Opener

Headlamp and Panel Dimmer Switch

Lower Left side of the IP

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp Control Module (Luxury)

Lower Left of the IP

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp Dimmer Switch

Part of the malfunction lever

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp, High Beam (Composite), Left Side

On the left front of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp, High Beam (Composite), Right Side

On the right front of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp, High/Low Beam, Left Side

On the left front of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp, High/Low Beam, Right Side

On the right front of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp, Low Beam (Composite), Left Side

On the left front of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp, Low Beam (Composite), Right Side

On the right front of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Heated Seat Switch, LF

At the LF of the LF power seat

Power Seat Component Views in Seats

Power Seat Connector End Views in Seats

Heated Seat Switch, RF

At the RF of the RF power seat

Power Seat Component Views in Seats

Power Seat Connector End Views in Seats

HVAC Control Switch

Center of IP below the Radio

HVAC Component Views in HVAC Systems w/ A/C Manual

HVAC Connector End Views in HVAC Systems w/ A/C Manual

Ignition Switch

IP Steering Column, under Lock Cylinder

Standard Wheel/Column Component Views in Steering Wheel and Column

Standard Wheel/Column Connector End Views in Steering Wheel and Column

Inflatable Restraint IP Module Switch (Pickup)

RH of IP Cluster

SIR Component Views in SIR

SIR Connector End Views in SIR

Interior Lamp Control Module

Under the center of the IP

Lighting Systems Component Views

Lighting Systems Connector End Views

IP Cluster

Above the Steering Column

Instrument Panel, Gages, and Console Component Views in Instrument Panel, Gauges and Console

Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gauges and Console

IP Compartment Box Lamp

In the IP compartment box

Lighting Systems Component Views

Lighting Systems Connector End Views

IP Fuse Block

To the left of the IP, near the left front door jamb switch

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

License Lamps, Left and Right Side

At the rear of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Liftgate Release Switch

In the center of the IP, to the left of the radio

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Marker Lamps, Roof

Across the top front of the roof

Lighting Systems Component Views

Lighting Systems Connector End Views

Marker Lamp, LF

Left front fender assembly

Lighting Systems Component Views

Lighting Systems Connector End Views

Marker Lamp, RF

Right front fender assembly

Lighting Systems Component Views

Lighting Systems Connector End Views

Park/Turn Lamp, LF

At the LF corner of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Park /Turn Lamp, RF

At the LF corner of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Park Brake Warning Switch

Mounted on Park Brake, under LH end of IP

Park Brake System Component Views in Parking Brakes

Park Brake System Connector End Views in Parking Brakes

Power Outside Rearview Mirror Switch

Drivers Door Panel, below the inside door handle

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Power Window Switch, Left Front

On the left front door trim panel, below the inside door handle

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Power Window Switch, Left Rear

On the left front door trim panel, below the inside door handle

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Power Window Switch, Right Front

On the right front door trim panel, below the inside door handle

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Power Window Switch, Right Rear

On the right rear door, below the inside door handle

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Radio

In the center of the IP

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Reading Lamps, Overhead Console

Near the windshield centerline

Lighting Systems Component Views

Lighting Systems Connector End Views

Remote Control Door Lock Reciever

Right side of the Steering Column support bracket underneath the IP

Power Door Systems Component Views In Power Door Systems

Power Door Systems Connector End Views In Power Door Systems

Stereo Controller, Rear

In the center Console

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Spotlamp, LH (Z56)

Located on the outside of the left "A" Pillar

Lighting Systems Component Views

Lighting Systems Connector End Views

Spotlamp, RH (Z56)

Located on the outside of the right "A" Pillar

Lighting Systems Component Views

Lighting Systems Connector End Views

Stoplamp Relay

In the underhood fuse relay center, left rear side of the engine compartment, on the fender

Lighting Systems Component Views

Lighting Systems Connector End Views

Stoplamp Switch

On the top of the brake pedal

Lighting Systems Component Views

Lighting Systems Connector End Views

Sunshade Mirror Lamp, Left Side

Part of the left side sunvisor

Lighting Systems Component Views

Lighting Systems Connector End Views

Sunshade Mirror Lamp, Right Side

Part of the right side sunvisor

Lighting Systems Component Views

Lighting Systems Connector End Views

Tail/Stop Turn Lamp (Cab Chassis), Left Rear

On the left rear corner of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Tail/Stop Turn Lamp (Pickup/Utility), Left Rear

On the right rear corner of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Tail/Stop Turn Lamp (Cab Chassis), Right Rear

On the right rear corner of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Tail/Stop Turn Lamp (Pickup/Utility), Right Rear

On the left rear corner of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Transfer Case Mode Selector Illumination Lamp

In Transfer Case Select Switch

Transfer Case Control Component Views in Transfer Case

Transfer Case Control Connector End Views in Transfer Case

Transfer Case Switch (M30)

Top LH of Transfer Case

Transfer Case Control Component Views in Transfer Case

Transfer Case Control Connector End Views in Transfer Case

Transfer Case Switch (MG5)

Top LH of Transfer Case

Transfer Case Control Component Views in Transfer Case

Transfer Case Control Connector End Views in Transfer Case

Transfer Case Switch (MT1)

Top LH of Transfer Case

Transfer Case Control Component Views in Transfer Case

Transfer Case Control Connector End Views in Transfer Case

Transfer Case Switch (MW3)

Top LH of Transfer Case

Transfer Case Control Component Views in Transfer Case

Transfer Case Control Connector End Views in Transfer Case

Transmission Range Switch

On the left side of the Transmission

Automatic Transmission Electronic Component Views (4L80E), Automatic Transmission Electronic Component Views (4L60E) in Transmission/Transaxle

Automatic Transmission Inline Harness Connector End View (4L80E), Automatic Transmission Inline Harness Connector End View (4L60E) in Transmission/Transaxle

Turn/Hazard Flasher

Mounted to the convenience center, under the left side of the IP, to the left side of the steering column, on the bulkhead

Lighting Systems Component Views

Lighting Systems Connector End Views

Turn/Hazard Switch

Part of the multifunction switch, on the upper left side of the steering column

Lighting Systems Component Views

Lighting Systems Connector End Views

Underhood Fuse Block

In the left rear side of the engine compartment, on the fender

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Underhood Lamp

Under the right side of the hood

Lighting Systems Component Views

Lighting Systems Connector End Views in Lighting Systems

Vehicle Interface Unit (VIU)

Underneath the Right Rear Seat Assembly

Cellular Communication Component Views in Cellular Communication

Cellular Communication Connector End Views in Cellular Communication

Window Lockout Switch, Rear

On the left front door, below the inside door handle, part of the power window master switch

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Window Wiper/Washer Switch, Rear

Center of the IP, right of the radio

Wiper/Washer Component Views in Wiper Washer Systems

Wiper/Washer Connector End Views in Wiper Washer Systems

C100

Part of the engine harness to IP harness, in the left rear side of the engine compartment, at the bulkhead

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C102

Part of the forward lamps harness to IP harness, in the left rear side of the engine compartment, near the underhood fuse-relay center, mounted on the fender

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C103

Part of the engine harness to fuel pump motor, in the left rear side of the engine compartment, under the brake master cylinder

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C104

Part of the IP harness to front to rear harness, in the left rear side of the engine compartment, under the brake master cylinder

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C106

LH rear of engine compartment

--

Inline Harness Connector End Views in Wiring Systems

C200

Behind the right side of the IP, near the heater motor, in foam wrap

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C206

Inside the lower left side A pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C207

Inside the lower left side A pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C209

Inside the lower left side A pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C210

At the convenience center

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C215

Inside the lower right side A pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C218

At the convenience center

--

Inline Harness Connector End Views in Wiring Systems

C219

At the convenience center

--

Inline Harness Connector End Views in Wiring Systems

C227 (Stoplamp Switch)

IP harness, Inline to the Stoplamp Switch

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C242 (Z56)

Part of the IP Harness, at the left side of the steering column, near the bulkhead

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C266

Part of the IP harness to steering column harness, to the left side of the steering column, near the bulkhead

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C271

IP harness to Roof Lamp & Mirror harness

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C272 (Z56 Police Package)

Inline to spotlamps

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C298

Behind the left side of the IP, near the convenience center

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C299

Behind RH of IP, above HVAC evaporator, housing

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C300

In the overhead console

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C301

At the left front kick panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C302

At the LF kick panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C304 (Luxury)

IP harness, Inline to Floor Console harness

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C305 (Luxury)

Cross Body harness, Inline to Floor Console harness

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C307

Front to Rear Harness, Inline to the Overhead Console Harness

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C407 (Pickup)

Below the left rear edge of the bed

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C407 (Suburban/Utility)

Lower center outside of the endgate

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C408 (Pickup/Cab)

Below the center rear edge of the bed

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C409

Below the rear center of the bed, near the bumper

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C411 (Luxury)

At the left side of the cab

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C411 (Pickup)

Crossbody harness, Inline to Rear Cargo Lamp harness

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C496

In the right side B pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C498

In the left side B pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

D203

Part of the IP harness, at the right side of the steering column support, mounted to the lower dash brace for the knee bolster at the left edge of the center console

Harness Routing Views in Wiring Systems

--

G103 (Gas)

On the right front side of the engine, near the thermostat housing

Power and Grounding Component Views in Wiring Systems

--

G104 (5.0L/5.7L)

Backside of the right cylinder head

Power and Grounding Component Views in Wiring Systems

--

G104 (6.5L)

Top rear of the right cylinder head

Power and Grounding Component Views in Wiring Systems

--

G104 (7.4L)

Backside of the engine block, below the right cylinder head

Power and Grounding Component Views in Wiring Systems

--

G105 (Gas)

On the right front side of the engine block

Power and Grounding Component Views in Wiring Systems

--

G105 (Diesel)

Right Rear of the cylinder head, cylinder #7 intake bolt

Power and Grounding Component Views in Wiring Systems

--

G108

Located in the Engine Compartment on the top side of the Bulkhead

Power and Grounding Component Views in Wiring Systems

--

G112

Engine Compartment, Behind the right side battery

Power and Grounding Component Views in Wiring Systems

--

G113

On the radiator support, near the left side headlamp

Power and Grounding Component Views in Wiring Systems

--

G200

Behind the left side of the IP, below the fuse block, on the tie bar

Power and Grounding Component Views in Wiring Systems

--

G202

On the right side of the instrument panel, mounted to the HVAC plenum bracket

Power and Grounding Component Views in Wiring Systems

--

G400 (Utility/Suburban)

On the right side B pillar, near the door striker

Power and Grounding Component Views in Wiring Systems

--

G401

Left side rear frame rail behind the bumper

Power and Grounding Component Views in Wiring Systems

--

G403

Left side rear frame rail behind the bumper

Power and Grounding Component Views in Wiring Systems

--

P100

In the left rear side of the engine compartment, at the bulkhead, above C100

Harness Routing Views in Wiring Systems

--

P101

In the right side of the engine compartment, at the bulkhead

Harness Routing Views in Wiring Systems

--

P103

In the left rear side of the engine compartment, at the bulkhead

--

--

P500

Passthrough between the left "A" Pillar and the left front door

Harness Routing Views in Wiring Systems

--

P600

Passthrough between the right "A" Pillar and the right front door

Harness Routing Views in Wiring Systems

--

P700

Passthrough between the left "B" Pillar and the left rear door

Harness Routing Views in Wiring Systems

--

S102 (6.5L)

Engine harness approx. 6.5 cm (2.5 in) from trans connector breakout, towards the Starter Solenoid harness breakout

--

--

S103 (5.0L, 5.7L)

Engine harness, approx. 8 cm (3 in) from EGR valve breakout, toward taillamp harness breakout

--

--

S103 (6.5L)

Engine harness, approx. 12 cm (4.7 in) from starter solenoid breakout, towards the Underhood Lamp harness breakout

--

--

S103 (7.4L - A/T)

Engine harness, approx. 8 cm (3 in) from the EGR Valve harness breakout, towards the Ignition Coil harness breakout

--

--

S103 (7.4L - M/T)

Engine Harness, approx. 4 cm (1.5 in) from the Fuel Injector harness breakout, towards the Taillamp harness breakout

--

--

S107 (5.0L, 5.7L)

Engine harness, approx. 20 cm (8 in) from EGR valve breakout, toward taillamp harness breakout

--

--

S107 (6.5L, HD

Engine harness, approx. 40 cm (15 in) from EBCM breakout, toward Transmission harness breakout

--

--

S107 (7.4L)

Engine harness, approx. 18 cm (7 in) from EBCM breakout, toward tthe EGR harness breakout

--

--

S113

Engine harness, approx. 19 cm (7.5 in) from EBCM breakout, into the Underhood Fuse Relay Center harness

--

--

S119

Forward lamps harness, approx. 16 cm (6 in) from Windshield Wiper harness breakout, towards the left fog lamp

--

--

S120

Forward lamps harness, approx. 22 cm (8.5 in) from windshield washer pump breakout, toward LH headlamp

--

--

S121

Forward lamps harness, approx. 12 cm (4.5 in) from LH headlamp breakout, toward windshield washer pump

--

--

S122

Forward lamps harness, approx. 35.5 cm (14 in) from Windshield Wiper harness breakout, towards the left fog lamp

--

--

S123

Forward lamps harness, approx. 23 cm (9 in) from LH park lamp breakout, toward windshield washer pump

--

--

S126 (Luxury)

Forward lamps harness, approx. 30 cm (12 G113 harness breakout, towards the left fog lamp

--

--

S126 (Z71 Tahoe/Limited)

In the fog lamp harness

--

--

S127

Forward lamps harness, approx. 5 cm (2 right side lights harness breakout, towards the SIR Front Sensor harness breakout

--

--

S128

Forward lamps harness, approx. 5 cm (2 in) from RH headlamp breakout, toward G112

--

--

S147 (Gas)

engine harness, approx. 5 cm (2 in) from EGR valve breakout, toward taillamp harness breakout

--

--

S147 (Diesel)

Engine harness, approx. 4 cm (1.5 in) from starter motor solenoid breakout

--

--

S160 (5.0L, 5.7L

Engine harness, approx. 23 cm (9 in) from EBCM breakout, toward taillamp harness

--

--

S160 (6.5L)

Engine harness, approx. 17 cm (6.5 in) from EBCM breakout, toward EGR valve breakout

--

--

S160 (7.4L)

Engine harness, approx. 28 cm (11 in) from fuel injector breakout, toward taillamp harness breakout

--

--

S165

Engine compartment, IP harness, approx. 9 cm (3.5 in) from P100, toward forward lamps harness connector

--

--

S167 (All Except Z56, Police Package/Luxury)

Engine harness, approx. 18 cm (7 in) from G115

--

--

S167 (Z56 Police Package/Luxury Only)

Battery harness, approx. 35 cm (13.5 in) from C121

--

--

S202

IP harness approx. 6.5 cm (2.5 in) from Convenience Center breakout toward DRL module

--

--

S204

IP harness, approx. 10 cm (4 in) from C100, towards Data Link Connector (DLC)

--

--

S205

IP harness, approx. 12 cm (4.5 in) from steering column harness breakout

--

--

S208

IP harness, approx. 6 cm (2.5 in) from IP compartment box lamp breakout

--

--

S209

IP harness, approx. 13 cm (5 in) from IP compartment box lamp breakout

--

--

S210 (Diesel)

IP harness, approx. 14 cm (5.5 in) from steering column harness breakout

--

--

S210 (Gas)

IP harness, approx. 4 cm (1.5 in) from auxiliary power outlet breakout

--

--

S213

IP harness, approx. 4 cm (1.5 in) from steering column harness breakout, towards the DLC

--

--

S214

IP harness, approx. 8 cm (3 in) from the Instrument Cluster connector harness breakout, towards the Instrument Cluster

--

--

S215

IP harness, approx. 8 cm (3 in) from instrument cluster breakout, toward radio connectors breakout

--

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S216 (Diesel and Uplevel)

IP harness, approx, 12 cm (4.5 in) from instrument cluster breakout, toward radio connectors breakout

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S216 (Gas, all except uplevel

IP harness, approx. 16 cm (6 in) from instrument cluster breakout, toward radio connectors breakout

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S217

IP harness, approx. 16 cm (6 in) from instrument cluster harness breakout, toward radio connectors breakout

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S218

IP harness, approx. 16 cm (6 in) from inflatable restraint switch breakout

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S220

IP harness, approx. 6 cm (2.5 in) from steering column harness breakout, toward C100

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S225

IP harness, approx. 12 cm (4.5 in) from radio harness breakout

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S239

In fuel select switch jumper harness

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S240

In fuel select switch jumper harness

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S242

IP harness, approx. 12 cm (4.5 in) from inflatable restraint switch breakout, towards the Auxiliary Power Connectors

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S246

Crossbody harness, approx. 22 cm (8.5 in) from LF door harness breakout

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S247

Crossbody harness, approx. 6 cm (2.5 in) into LH door harness breakout

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S248

Crossbody harness, approx. 35 cm (13 in) before the LF door harness breakout, from C301

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S251

Crossbody harness, approx. 13 cm (5 in) from LF Door harness breakout, toward IP harness breakout

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S253

Crossbody harness, approx. 4 cm (1.5 in) from C210 and C298 harness breakout, toward IP harness right door harness'

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S259

Crossbody harness, approx. 7 cm (2.5 in) into seat belt switch harness, toward C212

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S262 (Crew Cab)

Crossbody harness, approx. 19 cm (7.5 in) from seat belt switch breakout, toward IP harness breakout

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S262 (Suburban/Utility)

Crossbody harness, approx. 25 cm (10 in) from seat belt switch breakout, toward IP harness breakout

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S267

IP harness, approx. 4 cm (1.5 in) from Instrument Cluster harness breakout, toward Instrument Cluster connector

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S283 (Z56)

Spotlamp Extension harness, approx. 35 cm (13.5 in) from C272 harness breakout, towards the RH Spotlight

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S298

IP harness, approx. 24 cm (9.5 in) from instrument cluster breakout, toward radio breakout

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S299

IP harness, approx. 4 cm (1.5 in) into the steering column harness breakout, toward C266

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S304 (4-Door Utility/Suburban)

Rear HVAC control harness, approx. 31 cm (12 in) from auxiliary HVAC control logic module breakout, toward front auxiliary HVAC control module

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S307 (4-Door Utility/Suburban)

Rear HVAC control harness, approx. 10 cm (4 in) from auxiliary HVAC control logic module breakout, toward front auxiliary HVAC control module

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S310 (4-Door Utility)

Front-to-rear body harness approx. 5 cm (2 in) from auxiliary HVAC fan switch breakout

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S312

Illuminated Vanity mirror jumper harness, approx. 4 cm (1.5 in) from inside rearview mirror breakout, toward LH Illuminated vanity mirror

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S316

Illuminated vanity mirror jumper harness, approx. 8 cm (3 in) toward LH illuminated vanity mirror

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S322

Dome/Reading CHMSL harness, approx. 15 cm (5.5 in) from connector C411 towards front dome lamp

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S323

Dome/Reading CHMSL harness, approx. 6.5 cm (2.5 in) from CHMSL harness breakout towards front dome lamp

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S330 (Luxury)

Floor console harness approx. 13 cm (5 in) from LH heated seat switch breakout

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S333 (Luxury)

Floor console harness approx. 12 cm (4.5 in) from CD player harness breakout

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S336 (Luxury)

Floor console harness approx. 5 cm (2 in) from cross body incline connector harness breakout

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S410 (2-door Utility)

Front-to-rear body harness, approx. 37 cm (14.5 in) from RR door jamb switch breakout, toward RH door speaker breakout

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S410 (4-Door Utility/Suburban)

Front-to-rear body harness, approx. 12 cm (4.5 in) from RR door speaker breakout, toward RR door jamb breakout

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S411 (Chassis Cab)

Taillamp harness, approx. 33 cm (13 in) from taillamp extension harness breakout, towards the RH Tail & Stoplamp Connector

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S411 (Fleetside)

Taillamp harness, approx. 7 cm (2.5 in) from taillamp extension harness breakout, toward LH taillamp

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S411 (Suburban/Utility/Stepside)

Taillamp harness, approx. 7 cm (2.5 in) from tailamp trailer tow harness breakout, toward RH taillamp

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S412 (Chassis Cab)

Taillamp harness, approx. 23 cm (9 in) from taillamp extension harness breakout, toward RH taillamp

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S412 (Fleetside/Stepside)

Taillamp harness, approx. 16 cm (6 in) from taillamp extension harness breakout, toward RH taillamp

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S412 (Fleetside/Stepside w/Dual Rear Wheels)

Taillamp harness, approx. 23 cm (9 in) from taillamp extension harness breakout, toward RH taillamp

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S413 (Fleetside/Stepside)

Taillamp harness, approx. 27 cm (10.5 in) from trailer harness breakout, toward RH taillamp

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S414 (Chassis Cab)

Tailamp harness, approx. 5 cm (2 in) from taillamp extension harness breakout, toward RH taillamp

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S414 (Chassis Cab, HD)

Taillamp harness, approx. 15 cm (6 in) from taillamp extension harness breakout, toward RH taillamp

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S414 (Fleetside/Stepside)

Taillamp harness, approx. 10 cm (4 in) from taillamp extension harness breakout, toward LH taillamp

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S415

License Plate Lamp harness, approx. 8 cm (3 in) from connector C407 harness breakout, toward LH license plate lamp

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S416

License Plate Lamp harness, approx. 8 cm (3 in) from connector C407 harness breakout, toward RH license plate lamp

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S417 (2-Door Utility

Front-to-rear body harness, approx. 34 cm (13.5 in) from front dome lamp breakout, toward C301 breakout

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S417 (4-Door Utility/ Suburban)

Front-to-rear body harness, approx. 23 cm (9 in) into convenience center

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S419

Front to Rear harness, located at the CHMSL inline resistor

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S421

Tail/Stop Lamp harness, approx. 6.5 cm (2.5 in) from ground G401 harness breakout, towards RH taillamp

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S422

Tail/Stop Lamp harness, approx. 6.5 cm (2.5 in) from trailer harness breakout, towards RH taillamp

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S424

Front to Rear harness, located at the CHMSL inline resistor

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S426

Front to Rear harness, approx. 12 cm (4.5 in) from C302 and C302 harness breakout, towards Auxiliary HVAC Module Switches

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S500

Left Front Door harness, after the Power Window Master Switch

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S502

Left Front Door harness, before the Power Window Master Switch

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