GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Backup Lamp Switch (w/ M50)

LH side of transmission

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Backup Lamp Switch (w/ M30)

Part of Park/Neutral Position Switch, LH side of transmission

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Electronic Climate Control (ECC) Module (w/ Auto A/C)

The IP harness center of the IP, below the radio

HVAC Component Views in HVAC Systems with A/C - Automatic

HVAC Connector End Views in HVAC Systems with A/C - Automatic

Heater and A/C Controller (w/ Manual A/C) Connector C5 (4 Cavities) (Except Base Pickup)

Between connectors C1 and C3

HVAC Component Views in HVAC Systems with A/C - Manual

HVAC Connector End Views in HVAC Systems with A/C - Manual

Inside Rear View Mirror (Automatic Day/Night Mirror w/ Lights)

At the windshield centerline

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Inside Rear View Mirror (w/ Map Lamps)

At the windshield centerline

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

IP Fuse Block

LH of the IP, near the door jamb switch, LF

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Park/Neutral Position (PNP) Switch, Connector C1 (7 Cavities)

LH of the transmission

Engine Controls Component Views in Engine Controls - 2.2L

Engine Controls Connector End Views in Engine Controls - 2.2L

Rear Defogger Relay (Utility)

In the Underhood Bussed Electrical Center (UBEC)

Power and Grounding Component Views in Wiring Systems

--

Rear Window Defogger Grid (Utility)

Part of the liftglass window

--

--

Rear Window Defogger Switch (Utility)

Part of the heater and A/C controller (w/ manual A/C) or electronic climate control module (w/ auto A/C)

Stationary Windows Component Views

Stationary Windows Connector End Views

Underhood Bussed Electrical Center (UBEC)

On the top of the left inner wheelwell

Power and Grounding Component Views in Wiring Systems

--

Underhood Bussed Electrical Center (UBEC) Connector C1 (68 Cavities) (Body)

Below the Underhood Bussed Electrical Center

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Underhood Bussed Electrical Center (UBEC) Connector C2 (68 Cavities) (Engine)

Below the Underhood Bussed Electrical Center

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

C203 (116 Cavities)

Body harness to IP harness, to the RH of the IP

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C209 (16 Cavities) (Utility)

Body harness to dome harness, at the LF of the IP, at the LF window

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C427 (1 Cavity) (Utility w/ Liftgate)

Body harness to liftgate harness, near the upper LH corner of the liftgate

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C429 (1 Cavity) (Utility w/ Liftgate)

Body harness to liftgate harness, near the upper RH corner of the liftgate

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C432 (1 Cavity) (Utility w/ Endgate)

Body harness to the endgate coiled cord connector LH, at the LH rear upper body, near the endgate liftglass

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C433 (1 Cavity) (Utility w/ Endgate)

Body harness to endgate coiled cord connector, RH, at the RH rear upper body, near the endgate liftglass

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C900 (1 Cavity) (Utility w/Liftgate)

Liftgate harness to liftglass coiled cord connector, LH, inside the liftgate, LH of the rear window defogger grid

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C901 (1 Cavity) (Utility w/Liftgate)

Liftgate harness to RH Liftglass coiled cord connector RH, inside the liftgate, RH of the rear window defogger grid

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G202

(CKT 1850) Body harness, to the LF of the IP, above P100

Harness Routing Views in Wiring Systems

--

G420 (Utility)

(CKT 1450) Body harness, in the RH rear body corner, near C402 to the tail lamp harness

Harness Routing Views in Wiring Systems

--

G450 (Utility)

(CKT 1350) Body harness, in the LH Rear body corner, near C403 to the tail lamp harness

Harness Routing Views in Wiring Systems

--

P100

IP bulkhead pass-through, LH rear of the engine compartment, on the cowl

Harness Routing Views in Wiring Systems

--

P901 (Utility w/ Liftgate)

Body to the LH liftgate harness, in the LH of the liftgate

Harness Routing Views in Wiring Systems

--

P902 (Utility w/ Liftgate)

Body to RH liftgate harness, in the RH of the liftgate

Harness Routing Views in Wiring Systems

--

S217 (w/o Auto A/C)

(CKT 341) IP harness, in the breakout to the heater controller connectors, 6 cm (2.6 in) into the breakout

Harness Routing Views in Wiring Systems

--

S302 (Utility w/ Sunroof)

(CKT 1850) Dome harness between the breakouts to the inside air temperature sensor and the LH sunshade mirror lamp, 5 cm (1.97 in) from the breakout to the sensor

Harness Routing Views in Wiring Systems

--

S302 (Utility w/o Sunroof)

(CKT 1850) Dome harness between the breakouts to the inside air temperature sensor and the LH sunshade mirror lamp, 5 cm (1.97 in) from the breakout to the sensor

Harness Routing Views in Wiring Systems

--

S309

(CKT 1324) Body harness, between the rear doors and the endgate connectors, 98 cm (38.58 in) from the breakout for the rear doors

Harness Routing Views in Wiring Systems

--

S427 (Utility)

(CKT 1350, CKT 1450) LH rear body harness, 7 cm (2.76 in) below the breakout to the left tail lamp connector C403

Harness Routing Views in Wiring Systems

--

Splice Pack SP200

(CKT 41, CKT 241, CKT 341, CKT 817) Strapped to the body harness, in the center front of the IP, to the RH of SP204

Harness Routing Views in Wiring Systems

--