Electrical Center Identification Views. Chevrolet Chevy Suburban

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2003 🢒 Chevy Suburban - 4WD 🢒 Restraints 🢒 SIR 🢒 Electrical Center Identification Views

Table 1:	Fuse Block-Underhood Label Usage
Table 2:	Fuse Block-Underhood-C1
Table 3:	Fuse Block-Underhood-C2
Table 4:	Fuse Block-Underhood-C3
Table 5:	Fuse Block-Underhood-C4
Table 6:	Fuse Block-Underhood-C5
Table 7:	Fuse Block-Underhood-C6
Table 8:	Fuse Block-Underhood-C7
Table 9:	Fuse Block-Underhood-C9
Table 10:	Fuse Block - Left I/P Label Usage
Table 11:	Fuse Block-Left I/P-C1
Table 12:	Fuse Block-Left I/P-C2
Table 13:	Fuse Block-Left I/P-C3
Table 14:	Fuse Block-Left I/P-C4
Table 15:	Relay Block - Body Label Usage
Table 16:	Relay Block-I/P-C1
Table 17:	Relay Block-I/P-C3
Table 18:	Relay Block-I/P-C4
Table 19:	Relay Block-I/P-C7 (Z82 w/ Electric Trailer Brake Jumper Installed)
Table 20:	Relay Block-I/P-C8 (w/ VYU)
Table 21:	Relay Block-I/P-C9 (Except Y91)
Table 22:	Relay Block-I/P-C10
Table 23:	Fuse Block-Right I/P- C1 Wire Entry
Table 24:	Fuse Block-Right I/P-C2
Table 25:	Fuse Block-Right I/P-C4
Table 26:	Fuse Block-Right I/P-C5
Table 27:	Fuse Block-Right I/P-C6 (w/CF5 & U01)
Table 28:	Fuse Block-Right I/P-C7
Table 29:	Fuse Block-Right I/P-C8
Table 30:	Junction Block-Rear Lamps-C1
Table 31:	Junction Block-Rear Lamps-C2
Table 32:	Junction Block-Rear Lamps-C3
Table 33:	Junction Block-Rear Lamps-C4

Fuse Block-Underhood Label

Fuse Block-Underhood Label Usage

Fuse	Rating	Description
STUD # 1	40A	Trailer Wiring, Automatic Level Control (ALC) Compressor Relay
MBEC 1	50A	SEAT CB, RT DOOR CB
BLOWER	40A	Blower Motor
LBEC 2	50A	LOCKS Fuse, DDM Fuse, PDM Fuse, ECC Fuse, AUX PWR 2 Fuse
STUD # 2	30A	Trailer Wiring
ABS	60A	Electronic Brake Control Module (EBCM)
VSES/ECAS	60A	Electronic Brake Control Module (EBCM)
IGN A	40A	Ignition Switch RUN, START, RUN/START/ACCY
IGN B	40A	Ignition Switch RUN/ACC, RUN/START
LBEC 1	50A	FLASH Fuse, TBC 2A Fuse, TBC 2B Fuse, TBC 2C Fuse, LT DOORS Fuse
TRL PARK	15A	Trailer Wiring
RR PARK	10A	Exterior Lamps-Right Rear, Clearance Lamps-Right
LR PARK	10A	Exterior Lamps-Left Rear, Clearance Lamps-Left
PARK LP Relay	--	TRLR PARK Fuse,LR PARK Fuse,RR PARK Fuse,FRT PARK,INT PARK Fuse,DRL Relay (Export)
STARTER Relay	--	Starter
INTPARK	10A	ID Lamp
STOP LP	25A	Stop Lamp Switch
TBC BATT	10A	Body Control Module (BCM), PASS-Key Module
SUNROOF	25A	Sunroof Relay
SEO B2	30A	Roof Beacon Relay
4WS	15A	Rear Wheel Steering Control Module, Evaporative Emission (EVAP) Canister Vent Solenoid
RR HVAC	30A	HVAC Control Assembly-Rear Auxiliary
AUX PWR	20A	Accessory Power Outlets, Auxiliary Power Outlets
IGN 1 Relay	--	SBA Fuse,ETC/ECM Fuse,PCM 1 Fuse,INJ 1 Fuse,INJ 2 Fuse
PCM 1	15A	Powertrain Control Module (PCM), Mass Air Flow (MFS) Sensor, Evaporative Emission (EVAP) Canister Purge Solenoid, Fuel Composition Sensor, Secondary Fuel Pump Relay
ETC/ECM	15A	Throttle Actuator Control (TAC)
INJ 1	15A	Fuel Injectors-Odd-Numbered, Ignition Coils-Odd-Numbered
INJ 2	15A	Fuel Injectors-Even-Numbered, Ignition Coils-Even-Numbered
IGN E	10A	A/C COMP Relay, Park/Neutral Position (PNP) Swtich, Turn Signal/Multifunction Switch, Headlamp Leveling Components
RTD	30A	Automatic Level Control (ALC) Compressor, Electronic Suspension Control (ESC) Module
TRL B/U	10A	Body Control Module (BCM), Trailer Wiring, Back-Up Alarm
PCM B	20A	Powertrain Control Module (PCM)
PRIME F/PMP Relay	--	Fuel Pump
O2A	15A	Heated Oxygen Sensors-before the catalytic converter
B/U LP	20A	Park/Neutral Position (PNP) Switch
RR DEFOG	30A	DEFOG Relay
HDLP-HI Relay	--	HI HDLP-LT Fuse,HI HDLP-RT Fuse
O2B	15A	Heated Oxygen Sensors-after the catalytic converter
SIR	15A	Inflatable Restraint Sensing and Diagnostic Module (SDM), Memory Seat Module-Passenger, Inside Reaview Mirror
FRT PARK	10A	Park/Turn Signal Lamps-Front, Marker Lamps-Front
DRL Relay	--	DRL Fuse
SEO IGN	10A	DEFOG Relay, Instrument Panel Cluster (IPC), Rear Object Sensor Control Module
TBC IGN 1	10A	Body Control Module (BCM)
HI HDLP-LT	10A	Headlamp-High Beam-Left
LH HID	20A	Headlamp Ballast-Left
DRL	10A	DRL Relay (Domestic), Daytime Running Lamps (Export)
IPC/DIC	10A	Instrument Panel Cluster (IPC)
HVAC/ECAS	10A	HVAC Control Module
CIG LTR	15A	Cigar Lighter, Data Link Connector (DLC)
HI HDLP-RT	10A	Headlamp-High Beam-Right
HDLP-LOW Relay	--	LO HDLP-LT Fuse
A/C COMP Relay	--	A/C Compressor Clutch Assembly
A/C COMP	10A	A/C COMP Relay
RR WPR	25A	Window Wiper Module-Rear
RADIO	15A	Entertainment System Components
SEO B1	15A	Insturment Panel Cluster (IPC), Rear Fog Lamp Relay, Overhead Console, Roof Beacon Switch
LO HDLP-LT	10A	Headlamp-Low Beam-Left, Headlamp Ballast-Left
BTSI	10A	Stop Lamp Switch
CRANK	10A	Powertrain Control Module (PCM)
LO HDLP-RT	10A	Headlamp-Low Beam-Right, Headlamp Ballast-Right
FOG LP Relay	--	FOG LP Fuse
FOG LP	15A	FOG LP Relay
HORN Relay	--	HORN Fuse
W/S WASH Relay	--	W/S WASH Fuse
W/S WASH	15A	W/S WASH Relay
INFO	15A	Vehicle Communication Interface Module (VCIM), Rear Seat Entertainment (RSE) Assembly, Remote Playback Device-CD Player
RADIO AMP	30A	Audio Amplifier
RH HID	20A	Headlamp Ballast-Right
HORN	15A	Horn-Left, Horn-Right
EAP	15A	Electronic Adjustable Pedals (EAP) Relay
TREC	30A	Transfer Case Encoder Motor, Transfer Case Shift Control Module
SBA	15A	Supplemental Brake Assist Pump Motor

Fuse Block - Underhood Top View

Fuse Block - Underhood Bottom View

Fuse Block-Underhood-C1

Connector Part Information

•

12193905

•	68-Way F Metri-Pack 280 Series Flexlock (GRY)

Wire Color

Circuit No.

Function

ORN

3940

Battery Positive Voltage (w/JF4)

Not Used

YEL

Crank Voltage

ORN

2040

Battery Positive Voltage (w/YE9)

ORN

4340

Battery Positive Voltage

PNK

Ignition 1 Voltage

YEL

1139

Ignition 1 Voltage

LT GRN/BLK

584

A/T Shift Lock Control Switch Supply Voltage

PNK

Ignition 1 Voltage

A10

ORN

1740

Battery Positive Voltage

A11

DK GRN

1433

Not Used

A12

BRN

2409

Interior Park Lamps Supply Voltage

BRN

2409

Interior Park Lamps Supply Voltage (w/U01)

ORN

1640

Battery Positive Voltage (w/NP1/NP8/NR4)

ORN

2268

Windshield Washer Relay Control

DK GRN/WHT

1317

Fog Lamp Relay Control

DK GRN/WHT

1317

Fog Lamp Relay Control

B4-B7

Not Used

ORN

1840

Battery Positive Voltage

BLK/WHT

1969

Headlamp Relay Control/Headlamp High Beam Relay Control

B10

Not Used

B11

ORN

3840

Battery Positive Voltage (w/CF5)

B12

RED

142

Battery Positive Voltage

ORN

1640

Battery Positive Voltage (w/NP8)

ORN

3240

Battery Positive Voltage

BLK

Horn Relay Control

BLK

Horn Relay Control

C4-C5

Not Used

PNK

1020

Off/Run/Crank Voltage

C10

ORN

1040

Battery Positive Voltage

C11

Not Used

C12

PPL

420

TCC Brake Switch/Cruise Control Release Signal

D1-D2

Not Used

PNK/WHT

1970

Headlamp Low Beam Relay Control

ORN

340

Battery Positive Voltage

ORN

340

Battery Positive Voltage (w/UQ3/UQ5)

ORN

640

Battery Positive Voltage

ORN

640

Battery Positive Voltage

D8-D9

Not Used

D10

PNK

639

Ignition 1 Voltage

D11

Not Used

D12

ORN

1140

Battery Positive Voltage

ORN

1140

Battery Positive Voltage (w/T89)

E1-E2

Not Used

LT GRN /BLK

592

DRL Relay Control

ORN

4540

Battery Positive Voltage

ORN

4540

Battery Positive Voltage (w/ 8S8)

Not Used

BRN/WHT

1571

Traction Control Switch Signal (w/ NW7)

LT BLU

1320

CHMSL Supply Voltage/Stop Lamp Supply Voltage

E8-E9

Not Used

E10

DK BLU

2115

Right Turn Signal Lamps Supply Voltage

E11

ORN

2340

Battery Positive Voltage (w/VYU)

E12

Not Used

PNK

139

Ignition 1 Voltage

ORN

3740

Battery Positive Voltage

LT BLU

2114

Left Turn Signal Lamps Supply Voltage

Not Used

PNK

739

Ignition 1 Voltage

PNK

739

Ignition 1 Voltage (w/8S8)

PNK

739

Ignition 1 Voltage (w/Z75)

PNK

639

Ignition 1 Voltage (w/o 8S8)

PNK

639

Ignition 1 Voltage

ORN

2840

Battery Positive Voltage (w/o 8S8)

F8-F9

Not Used

F10

GRY

1524

Backup Lamp Supply Voltage

F11

WHT

1080

Park Lamp Relay Control

F12

ORN

1540

Battery Positive Voltage

Fuse Block-Underhood-C2

Connector Part Information

•

12193906

•	68-Way F Metri-Pack 280 Series (BLK)

Wire Color

Circuit No.

Function

A1 -A2

Not Used

DK GRN

A/C Compressor Clutch Supply Voltage

A4-A6

Not Used

DK GRN/WHT

465

Fuel Pump Relay Control-Primary

Not Used

PNK

1339

Ignition 1 Voltage

A10

LT BLU

1320

CHMSL Supply Voltage/Stop Lamp Supply Voltage

A11

GRY

1524

Trailer Backup Lamp Supply Voltage

A12

PNK

439

Ignition 1 Voltage (w/EVA)

PNK

439

Ignition 1 Voltage (w/L59)

B1-B2

Not Used

BLK/WHT

1695

Axle Switch Signal (w/NP2)

BLK/WHT

1695

Axle Switch Signal (w/NP2)

B4-B6

Not Used

BLK

550

Ground

ORN

440

Battery Positive Voltage - PCM

ORN

440

Battery Positive Voltage - PCM

PNK

1039

Ignition 1 Voltage

B10

PNK

439

Ignition 1 Voltage - MAF Sensor

PNK

439

Ignition 1 Voltage - PCM

B11-B12

Not Used

C1-C2

Not Used

DK GRN/

WHT

459

A/C Compressor Clutch Relay Control

C4-C5

Not Used

C8-C9

Not Used

C10

PNK

1039

Ignition 1 Voltage

PNK

1039

Ignition 1 Voltage (w/o L18)

C11

Not Used

C12

PPL

420

TCC Brake Switch/Cruise Control Release Signal

D1-D2

Not Used

LT GRN

275

Park Neutral Position Switch Park Signal

D4-D5

Not Used

PNK

539

Ignition 1 Voltage - HO2S Bank 2 Sensor 1

PNK

539

Ignition 1 Voltage - HO2S Bank 1 Sensor 1

PNK

1239

Ignition 1 Voltage

D10

PNK

1039

Ignition 1 Voltage - Fuel Injector 1 (w/o L18)

PNK

1039

Ignition 1 Voltage

D11

PPL

Starter Solenoid Crank Voltage

D12

YEL/BLK

625

Starter Enable Relay Control

E1-E5

Not Used

PNK

1239

Ignition 1 Voltage - Fuel Injector 2 (w/o L18)

PNK

1239

Ignition 1 Voltage - Fuel Injector 4

PNK

1539

Ignition 1 Voltage (All except L18 w/o NC1)

PNK

1539

Ignition 1 Voltage

E8-E9

Not Used

E10

PNK

1239

Ignition 1 Voltage - Fuel Injector 6 (w/o L18)

PNK

1239

Ignition 1 Voltage - Fuel Injector 8 (w/o L18)

E11

PNK

1020

Off/Run/Crank Voltage

PNK

1020

Off/Run/Crank Voltage

E12

Not Used

F1-F2

Not Used

PPL

806

Crank Voltage

F4-F7

Not Used

PNK

839

Ignition 1 Voltage

PNK

639

Ignition 1 Voltage

F10

Not Used

F11

DK GRN

1433

Park/Neutral Start Switch Signal

F12

Not Used

Fuse Block-Underhood-C3

Connector Part Information

•

12193916

•	32-Way F Metri-Pack 280 Series (RED)

Wire Color

Circuit No.

Function

A1-A2

Not Used

DK BLU

2115

Right Turn Signal Lamps Supply Voltage

ORN

2640

Battery Positive Voltage

ORN

2640

Battery Positive Voltage (w/NYS)

PPL

420

TCC Brake Switch/Cruise Control Release Signal

Not Used

BLK/WHT

1695

Axle Switch Signal (w/NP2)

ORN

2440

Battery Positive Voltage (w/ Z55)

LT BLU

2114

Left Turn Signal Lamps Supply Voltage

B4-B5

Not Used

BRN

2109

Trailer Park Lamps Supply Voltage

Not Used

LT GRN

1624

Trailer Backup Lamps Supply Voltage

LT GRN

1624

Trailer Backup Lamps Supply Voltage (w/ 8S3)

Not Used

BRN/WHT

2609

Right Rear Park Lamps Supply Voltage

D1-D6

Not Used

E1-E2

Not Used

PNK

439

Ignition 1 Voltage (w/NQZ)

BLK

550

Ground

BLK

550

Ground (w/JH2)

E5-E6

Not Used

GRY

120

Fuel Pump Supply Voltage

GRY

120

Fuel Pump Supply Voltage (w/NQZ)

F2-F3

Not Used

LT BLU

1320

CHMSL Supply Voltage/Stop Lamp Supply Voltage

Not Used

BRN

2509

Left Rear Park Lamps Supply Voltage

Fuse Block-Underhood-C4

Connector Part Information

•

12193914

•	32-Way F Metri-Pack 280 Series (GRN)

Wire Color

Circuit No.

Function

A1-A2

Not Used

DK BLU

2115

Right Turn Signal Lamps Supply Voltage

DK BLU

2115

Right Turn Signal Lamps Supply Voltage (w/o Z75)

BLK

550

Ground

Not Used

DK GRN

1329

Horn Fuse Supply Voltage

DK GRN

1329

Horn Fuse Supply Voltage (w/7Z1)

Not Used

DK BLU

545

DRL Supply Voltage

DK BLU

545

DRL Supply Voltage

B3-B6

Not Used

BRN

2309

Front Park Lamps Supply Voltage (w/ Z75)

BRN

2309

Front Park Lamps Supply Voltage (w/VYU)

Not Used

BRN

2309

Front Park Lamps Supply Voltage (w/VYU)

BRN

2309

Front Park Lamps Supply Voltage (w/ Z75)

RED

228

Windshield Washer Pump Control

Not Used

ORN

3540

Battery Positive Voltage (w/ TT6)

D3-D5

Not Used

PPL

Fog Lamps Supply Voltage (w/T96)

PPL

Fog Lamps Supply Voltage (w/T96)

LT BLU

2114

Left Turn Signal Lamps Supply Voltage (w/o Z75)

LT BLU

2114

Left Turn Signal Lamps Supply Voltage

DK GRN/

WHT

711

Left Headlamp High Beam Supply Voltage

LT GRN/

BLK

311

Right Headlamp High Beam Supply Voltage

E4-E5

Not Used

ORN

3640

Battery Positive Voltage (w/ TT6)

F1-F3

Not Used

YEL

712

Left Headlamp Low Beam Supply Voltage

TAN/WHT

312

Right Headlamp Low Beam Supply Voltage

Not Used

Fuse Block-Underhood-C5

Connector Part Information

•

15393171

•	2 Way-F J-Type (GRY)

Wire Color

Circuit No.

Function

RED

842

Battery Positive Voltage

RED

542

Battery Positive Voltage

Fuse Block-Underhood-C6

Connector Part Information

•

15393172

•	2 Way-F J-Type (LT GRN)

Wire Color

Circuit No.

Function

RED

642

Battery Positive Voltage

Not Used

Fuse Block-Underhood-C7

Connector Part Information

•

15393168

•	2 Way-F J-Type (BLK)

Wire Color

Circuit No.

Function

RED

342

Battery Positive Voltage

RED

Battery Positive Voltage

Fuse Block-Underhood-C9

Connector Part Information

•

15393170

•	2 Way-F J-Type (WHT)

Wire Color

Circuit No.

Function

RED

442

Battery Positive Voltage

RED

4042

Battery Positive Voltage (w/VSES)

Fuse Block - Left I/P Label

Fuse Block - Left I/P Label Usage

Fuse	Rating	Description
RR WPR Fuse	15A	Rear Wiper/Washer Switch
SEO ACCY Fuse	10A	Upfitter Provisions
WS WPR Fuse	25A	Windshield Wiper Motor Module
TBC ACCY Fuse	10A	Body Control Module (BCM)
IGN 3 Fuse	10A	HVAC Components, Electronic Suspension Control (ESC) Components, Heated Seat Modules-Rear, Rear Wheel Steering Control Module
4WD Fuse	15A	Front Axle Actuator, Transfer Case Shift Control Switch
HTR/AC Fuse	30A	HVAC Control Module
LOCK Relay	--	Door Lock Actuator - Liftgate, Door Latch Assembly - LR/RR
HVAC 1 Fuse	10A	HVAC Control Module, HVAC Actuators
L DOOR 12 WAY- BLACK	--	Fuse Block - Left I/P C4 (Driver Door Harness)
CRUISE Fuse	10A	Cruise Control Switch, Steering Wheel Speed/Position Sensor
UNLOCK Relay	--	Door Lock Actuator - Liftgate, Door Latch Assembly - LR/RR
RR FOG LP Relay	--	Rear Fog Lamps (Export)
BRAKE Fuse	10A	Stop Lamp Switch, Electronic Brake Control Module (EBCM), Traction Control Switch
DRIVER UNLOCK Relay	--	Not Used
PDM Fuse	10A	Front Passenger Door Module (FPDM)
IGN 0 Fuse	10A	Passlock Sensor, Automatic Transmission, Powertrain Control Module (PCM)
TBC IGN 0 Fuse	10A	Body Control Module (BCM)
VEH CHMSL Fuse	10A	Center High Mounted Stop Lamp (CHMSL)
LT TRLR ST/TRN Fuse	10A	Trailer Wiring
LT TRN Fuse	10A	Turn Signal Lamps-Left, Marker Lamps-Left, Driver Door Module (DDM), Instrument Panel Cluster (IPC)
VEH STOP Fuse	15A	Tail/Stop and Turn Signal Lamps-Rear, Throttle Actuator Control (TAC)
BODY 12 - WAY BROWN	--	Fuse Block - Left I/P C3 (Body Harness)
RT TRLR ST/TRN Fuse	10A	Trailer Wiring
RT TRN Fuse	10A	Turn Signal Lamps-Right, Marker Lamps-Right, Front Passenger Door Module (FPDM), Instrument Panel Cluster (IPC)
DDM Fuse	15A	Driver Door Module (DDM)
AUX PWR 2 Fuse	20A	Accessory Power Outlet-D-Pillar
LOCKS Fuse	20A	Door Lock/Unlock Relays
ECC Fuse	10A	HVAC Control Assembly-Rear Auxiliary
TBC 2C Fuse	15A	Body Control Module (BCM)
FLASH Fuse	25A	Turn Signal/Hazard Flasher Module
CB LT DOORS	25A	Window Switch - LR, Driver Door Module (DDM)
TBC 2B Fuse	15A	Body Control Module (BCM)
TBC 2A Fuse	15A	Body Control Module (BCM)

Fuse Block - Left I/P Top View

Fuse Block - Left I/P Bottom View

Fuse Block-Left I/P-C1

Connector Part Information

•

12193906

•	68-Way F Metri-Pack 280 Series (BLK)

Wire Color

Circuit No.

Function

Not Used

GRY/BLK

255

Power Door Lock Fuse Supply Voltage

Not Used

TAN/BLK

254

Power Door Unlock Fuse Supply Voltage

Not Used

DK BLU

2115

Right Turn Signal Lamps Supply Voltage

ORN

4240

Battery Positive Voltage

YEL

1618

Trailer Left Rear Turn/Stop Lamp Supply Voltage

DK GRN

1619

Trailer Right Rear Turn/Stop Lamp Supply Voltage

A10

Not Used

A11

DK BLU

2115

Right Turn Signal Lamps Supply Voltage

DK BLU

2115

Right Turn Signal Lamps Supply Voltage

A12

RED

Battery Positive Voltage

YEL

143

Accessory Voltage

YEL

Accessory Voltage

YEL

1977

Rear Fog Lamp Relay Control (w/T96)

YEL

1977

Rear Fog Lamp Relay Control (w/T96)

B4-B7

Not Used

WHT

Stop Lamp Switch Signal

B9-B11

Not Used

B12

ORN

2140

Battery Positive Voltage

Not Used

BRN

141

Ignition 3 Voltage (w/CJ3)

Not Used

BRN

Ignition 3 Voltage

BRN

441

Ignition 3 Voltage (w/JL4-NR4))

LT BLU

1620

Trailer CHMSL Supply Voltage

C9-C12

Not Used

YEL

243

Accessory Voltage

Not Used

BRN

341

Ignition 3 Voltage

BRN

341

Ignition 3 Voltage

Not Used

BRN

441

Ignition 3 Voltage

BRN

441

Ignition 3 Voltage

D8-D9

Not Used

D10

BLK/WHT

1851

Ground

D11

D12

BRN

541

Ignition 3 Voltage (906 w/NYS)

Not Used

BRN

241

Ignition 3 Voltage (w/NP1/NP2/NP8)

BRN

241

Ignition 3 Voltage (w/NP1/NP2/NR4)

RED

122

Rear Fog Lamp Supply Voltage (w/T96)

GRY

118

Left Front Door Speaker Output (-)

GRY

118

Left Front Tweeter Speaker Output (-) (UQ7 w/Y91)

BRN

1046

DDM Class 2 Serial Data

Not Used

PNK

1691

Automatic Day/Night Mirror Low Reference (w/DL3)

WHT

530

Ignition 0 Voltage

ORN

4540

Battery Positive Voltage-Export Only

E10

RED

842

Battery Positive Voltage

E11

ORN

4040

Battery Positive Voltage

E12

ORN

2240

Battery Positive Voltage

YEL

343

Accessory Voltage (w/E52)

Not Used

LT BLU

2114

Left Turn Signal Lamps Supply Voltage

LT BLU

2114

Left Turn Signal Lamps Supply Voltage

GRY

1690

Automatic Day/Night Mirror Signal (w/DL3)

TAN

201

Left Front Door Speaker Output (+)

TAN

201

Left Front Tweeter Speaker Output (+) (UQ7 w/Y91)

BLK

1050

Ground

BRN/WHT

230

Instrument Panel Lamps Dimming Control (w/o YE9)

PNK

1020

Off/Run/Crank Voltage

LT BLU

1320

CHMSL Supply Voltage/Stop Lamp Supply Voltage

LT BLU

1320

CHMSL Supply Voltage/Stop Lamp Supply Voltage (w/T89)

F10-F12

Not Used

Fuse Block-Left I/P-C2

Connector Part Information

•

12193930

•	6-Way F Metri-Pack 280 Series Flexlock (BLK)

Wire Color

Circuit No.

Function

ORN

300

Ignition 3 Voltage

LT GRN

1427

Right Turn Signal Switch Signal

DK GRN

1428

Left Turn Signal Switch Signal

WHT

111

Hazard Switch Signal

WHT

1390

Off/Run/Crank Voltage

BRN

Accessory Voltage

Fuse Block-Left I/P-C3

Connector Part Information

•

12194035

•	12-Way F Metri-Pack 280 Series (BLK)

Wire Color

Circuit No.

Function

BRN/WHT

230

Instrument Panel Lamps Dimming Control (w/o YE9)

Not Used

ORN

1240

Battery Positive Voltage

BLK

1050

Ground

Not Used

ORN

4140

Battery Positive Voltage

TAN

201

Left Front Speaker Output (+) (w/UQ3)

TAN

201

Left Front Speaker Output (+)

PNK

1691

Automatic Day/Night Mirror Low Reference (w/DL3)

BRN

1046

DDM Class 2 Serial Data

GRY

1690

Automatic Day/Night Mirror Signal (w/DL3)

GRY

118

Left Front Speaker Output (-) (w/UQ3)

GRY

118

Left Front Speaker Output (-)

LT BLU

2114

Left Turn Signal Lamps Supply Voltage

Fuse Block-Left I/P-C4

Connector Part Information

•

15328768

•	12-Way F Metri-Pack 280 Series Flexlock (BRN)

Wire Color

Circuit No.

Function

Not Used

BRN

541

Ignition 3 Voltage

BRN

541

Ignition 3 Voltage (w/Z75)

BRN

541

Ignition 3 Voltage

ORN

3140

Battery Positive Voltage (w/CJ2)

TAN

294

Door Lock Actuator Unlock Control

TAN

294

Door Lock Actuator Unlock Control

TAN

294

Door Lock Actuator Unlock Control (All Except Avalanche Escalade EXT)

ORN

3040

Battery Positive Voltage

LT BLU

1620

Trailer CHMSL Supply Voltage

Not Used

GRY

295

Left Rear Door Lock Actuator Lock Control

GRY

295

Right Rear Door Lock Actuator Lock Control

GRY

295

Door Lock Actuator Lock Control

ORN

1240

Battery Positive Voltage

Relay Block - Body Label

Relay Block - Body Label Usage

Fuse	Rating	Description
SEO- 6 - WAY- BLK	--	Relay Block - Body C8
TRAILER- 6 - WAY- BRN	--	Relay Block - Body C7
UPFIT- 4 - WAY- CRM	--	Trailer Provisions
SL RIDE- 6 - WAY- GRY	--	Relay Block - Body C5
HDLNR 2- 6 - WAY-CRM	--	Relay Block - Body C4
BODY-12 - WAY-WHT	--	Relay Block - Body C10
DEFOG Relay	--	RR DEFOG Fuse
HDLNR 1-12 - WAY-BRN	--	Relay Block - Body C3
SPARE-RELAY	--	Not Used
CB- SEAT	30A	Seat Adjuster Switch - Driver, Memory Seat Module, Lumbar Bolster Switch - Front Passenger, Seat Adjuster Switch - Front Passenger
CB- RT DOOR	25A	Front Passenger Door Module (FPDM), Window Switch - RR
SPARE-4 - WAY-GRY	--	Not Used
INFO-12 - WAY-BLK	--	Relay Block - Body C9

Relay Block - Body Top View

Relay Block - Body Bottom View

Relay Block-I/P-C1

Connector Part Information

•

12193905

•	68-Way F Metri-Pack 280 Series Flexlock (GRY)

Wire Color

Circuit No.

Function

LT GRN

Backup Lamp Supply Voltage-BCM

LT GRN

Backup Lamp Supply Voltage-Junction Block-Rear

Not Used

BLK/WHT

1704

Low Reference

DK GRN/

WHT

636

Ambient Air Temperature Sensor Signal

BLK/WHT

1851

Ground

BLK/WHT

1851

Ground

WHT

193

Rear Defog Relay Control

Not Used

BRN/WHT

230

Instrument Panel Lamps Dimming Control

BRN/WHT

230

Instrument Panel Lamps Dimming Control (w/Y91)

YEL

1139

Ignition 1 Voltage

A10

Not Used

A11

BRN/WHT

230

Instrument Panel Lamps Dimming Control (w/NP1/NP8/NR4)

BRN/WHT

230

Instrument Panel Lamps Dimming Control (w/ VSES)

A12

GRY/BLK

690

Courtesy Lamp Supply Voltage

PNK

1045

Serial Communications Circuit (w/o Y91)

ORN

3740

Battery Positive Voltage (UQ7 w/o Y91)

BLK/WHT

1851

Ground

BLK/WHT

1851

Ground

Not Used

BLK/WHT

1851

Ground

BLK/WHT

1851

Ground

ORN

1840

Battery Positive Voltage

RED

642

Battery Positive Voltage

BRN/WHT

230

Instrument Panel Lamps Dimming Control

BRN/WHT

230

Instrument Panel Lamps Dimming Control (w/JL4)

BRN/WHT

230

Instrument Panel Lamps Dimming Control (w/NYS)

DK GRN/WHT

817

Vehicle Speed Signal (UQ7 w/Y91)

DK GRN/WHT

817

Vehicle Speed Signal

B10

Not Used

B11

ORN

3240

Battery Positive Voltage (w/o Y91)

B12

Not Used

ORN

340

Battery Positive Voltage (w/YE9)

BRN/WHT

230

Instrument Panel Lamps Dimming Control

BRN/WHT

230

Instrument Panel Lamps Dimming Control (w/ YE9)

BRN/WHT

230

Instrument Panel Lamps Dimming Control (w/ YE9)

BRN/WHT

230

Instrument Panel Lamps Dimming Control (w/ U1S)

ORN

1732

Inadvertent Power Supply Voltage

BLK/WHT

1851

Ground

BRN/WHT

230

Instrument Panel Lamps Dimming Control

BRN/WHT

230

Instrument Panel Lamps Dimming Control

ORN

1340

Battery Positive Voltage

C10

BRN

2409

Interior Park Lamps Supply Voltage

C11

ORN

1732

Inadvertent Power Supply Voltage (w/Y91)

ORN

1732

Inadvertent Power Supply Voltage (Avalanche/Escalade EXT)

C12

Not Used

WHT/BLK

5515

Inside Air Temperature Sensor Assembly Control (w/CJ2)

BRN/WHT

230

Instrument Panel Lamps Dimming Control

BRN/WHT

230

Instrument Panel Lamps Dimming Control (w/ T89/-Y91)

BRN/WHT

230

Instrument Panel Lamps Dimming Control

ORN

1732

Inadvertent Power Supply Voltage

BLK/WHT

1851

Ground

BLK/WHT

1851

Ground (w/ U42)

BLK/WHT

1851

Ground

BLK/WHT

1851

Ground (w/ Y91)

BLK

1050

Ground

D10

BRN

2409

Interior Park Lamps Supply Voltage (906 w/NYS)

D11

Not Used

D12

ORN

2340

Battery Positive Voltage (w/ VYU)

BRN

718

Low Reference (w/CJ2)

PNK

1691

Automatic Day/Night Mirror Low Reference (w/DL3)

Not Used

PPL/WHT

1382

LED Dimming Signal

PPL/WHT

1382

LED Dimming Signal (w/NP1/NP8/NR4)

BLK/WHT

1851

Ground (w/ AU3-YE9)

BLK/WHT

1851

Ground (w/UQ7/ Y91)

DK GRN/WHT

817

Vehicle Speed Signal

DK GRN/WHT

817

Vehicle Speed Signal (w/NYS)

PPL/WHT

1382

LED Dimming Signal

PPL/WHT

1382

LED Dimming Signal

BLK/WHT

1851

Ground-BCM-C2

BLK/WHT

1851

Ground-BCM-C3

Not Used

E10

RED

242

Battery Positive Voltage

E11-E12

Not Used

DK GRN

734

Inside Air Temperature Sensor Signal (w/CJ2)

GRY

1690

Automatic Day/Night Mirror Signal (w/DL3)

PNK

739

Ignition 1 Voltage

TAN/WHT

1384

Selective Ride Control Switch Signal

BLK/WHT

1851

Ground (w/NP1/NP8)

BLK/WHT

1851

Ground (w/U2K/U2L&Y91)

PPL/WHT

1382

LED Dimming Signal (w/Z75 or T79)

PPL/WHT

1382

LED Dimming Signal (w/NYS)

ORN

4540

Battery Positive Voltage

ORN

4540

Battery Positive Voltage (w/ T79)

BLK/WHT

1851

Ground (w/ Y91)

BLK/WHT

1851

Ground (Export Only)

LT BLU

1620

Trailer CHMSL Supply Voltage

F10

DK BLU

Trailer Auxiliary Supply Voltage (w/o LU3)

F11

YEL

243

Accessory Voltage

F12

Not Used

Relay Block-I/P-C3

Connector Part Information

•

15328768

•	12-Way F Metri-Pack 280 Series Flexlock (BRN)

Wire Color

Circuit No.

Function

LT GRN

Backup Lamp Supply Voltage

ORN

4540

Battery Positive Voltage

BLK

1050

Ground

Not Used

YEL

1139

Ignition 1 Voltage

DK GRN

2308

Passenger Air Bag Off Indicator Control (w/ALO)

BLK/WHT

1704

Low Reference (w/YE9)

DK BLU

2307

Passenger Air Bag On Indicator Control (w/ALO)

Not Used

DK GRN/WHT

636

Ambient Air Temperature Sensor Signal (w/YE9)

GRY/BLK

690

Courtesy Lamp Supply Voltage

GRY/BLK

690

Courtesy Lamp Supply Voltage (Avalanche/Escalade EXT)

ORN

1732

Inadvertent Power Supply Voltage

Relay Block-I/P-C4

Connector Part Information

•

12193922

•	6-Way F Metri-Pack 280 Series Flexlock (CRM)

Wire Color

Circuit No.

Function

BRN/WHT

230

Instrument Panel Lamps Dimming Control (w/YE9)

BRN/WHT

230

Instrument Panel Lamps Dimming Control (w/C36 or C69)

PNK

1691

Automatic Day/Night Mirror Low Reference (w/DL3)

GRY

1690

Automatic Day/Night Mirror Signal (w/DL3)

DK GRN

734

Inside Air Temperature Sensor Signal (w/CJ2)

BRN

718

Low Reference (w/CJ2)

WHT/BLK

5515

Inside Air Temperature Sensor Assembly Control (w/CJ2)

Relay Block-I/P-C7 (Z82 w/ Electric Trailer Brake Jumper Installed)

Connector Part Information

•

12193924

•	6-Way F Metri-Pack 280 Series Flexlock (BRN)

Wire Color

Circuit No.

Function

BRN

2409

Interior Park Lamps Supply Voltage

RED

242

Battery Positive Voltage

DK BLU

Trailer Auxiliary Supply Voltage

LT BLU

1620

Trailer CHMSL Supply Voltage

Not Used

BLK

1050

Ground

Relay Block-I/P-C8 (w/ VYU)

Connector Part Information

•

12193930

•	6-Way F Metri-Pack 280 Series (BLK)

Wire Color

Circuit No.

Function

ORN

2340

Battery Positive Voltage

B-D

Not Used

ORN

4540

Battery Positive Voltage

BLK

1050

Ground

Relay Block-I/P-C9 (Except Y91)

Connector Part Information

•

12194035

•	12-Way F Metri-Pack 280 Series (BLK)

Wire Color

Circuit No.

Function

Not Used

PNK

1045

Serial Communications Circuit

Not Used

ORN

3740

Battery Positive Voltage (UQ7)

ORN

340

Battery Positive Voltage (w/UK6)

ORN

340

Battery Positive Voltage (w/ U2K/U2L)

F-G

Not Used

ORN

3240

Battery Positive Voltage (w/UE1)

ORN

3240

Battery Positive Voltage (w/UE1)

ORN

3240

Battery Positive Voltage (w/ U42)

BLK/WHT

1851

Ground (UE1)

BLK/WHT

1851

Ground (w/ U42)

BLK/WHT

1851

Ground (w/UE1)

BLK/WHT

1851

Ground (UQ7)

BLK/WHT

1851

Ground (w/U2K/U2L)

Relay Block-I/P-C10

Connector Part Information

•

15357030

•	12-Way F Metri-Pack 280 Series Flex-Lock (WHT)

Wire Color

Circuit No.

Function

ORN

4540

Battery Positive Voltage-LR Heated Seat Module (w/Y91)

ORN

4540

Battery Positive Voltage-RR Heated Seat Module (w/Y91)

GRY/BLK

690

Courtesy Lamp Supply Voltage (Surburban/Escalade ESV)

GRY/BLK

690

Courtesy Lamp Supply Voltage-LR Door

GRY/BLK

690

Courtesy Lamp Supply Voltage-RR Door

DK GRN

2308

Passenger Air Bag Off Indicator Control (w/ALO)

ORN

1440

Battery Positive Voltage

BRN/WHT

230

Instrument Panel Lamps Dimming Control

BRN/WHT

230

Instrument Panel Lamps Dimming Control

DK BLU

2307

Passenger Air Bag On Indicator Control (w/ALO)

ORN

1440

Battery Positive Voltage

DK GRN/WHT

817

Vehicle Speed Signal (w/ Z75)

ORN

1340

Battery Positive Voltage

PPL

293

Rear Defog Element Supply Voltage

YEL

1139

Ignition 1 Voltage

YEL

1139

Ignition 1 Voltage (w/ALO)

Fuse Block - Right I/P Top View

Fuse Block - Right I/P Bottom View

Fuse Block-Right I/P- C1 Wire Entry

Connector Part Information

•

15401495

•	48-Way F Metri-Pack 280 Series (BLK)

Wire Color

Circuit No.

Function

DK GRN

117

Right Front Speaker Output (-)

DK GRN

117

Right Front Speaker Output (-) (UQ7 w/Y91)

LT GRN

200

Right Front Speaker Output (+)

LT GRN

200

Right Front Speaker Output (+) (UQ7 w/Y91)

2C-2E

Not Used

BLK

1050

Ground

BLK

1050

Ground

ORN

Blower Motor High Control (w/CJ3)

GRY/BLK

2337

Lower Right Air Temperature Sensor Signal (w/CJ2)

PPL

Medium 3 Blower Motor Control (w/CJ3)

BRN

718

Low Reference (w/CJ2)

RED

542

Battery Positive Voltage

TAN

Auxiliary Blower Motor Medium 1 Control (w/CJ3)

PPL

1838

Recirculation Door Position Signal (w/CJ2)

PPL/WHT

760

Auxiliary Front Blower Motor Switch Signal (w/CJ2)

YEL

Blower Motor Low Control (w/CJ3)

Not Used

LT BLU/BLK

1688

5 Volt Reference (w/CJ2)

LT BLU

Medium 2 Blower Motor Control (w/CJ3)

YEL

1791

Low Reference (w/CJ2)

Not Used

LT GRN

2275

Mode Door Position Signal (w/CJ2)

TAN

2273

Mode Door Control (w/CJ2)

DK BLU

1199

Left Air Temperature Door Control (w/CJ2)

LT BLU

733

Left Air Temperature Door Position Signal (w/CJ2)

Not Used

ORN

3840

Battery Positive Voltage (w/CF5)

BRN

2409

Interior Park Lamps Supply Voltage

BLK

1050

Ground

DK BLU

1353

RAP Supply Voltage (w/CF5)

BRN/WHT

230

Instrument Panel Lamps Dimming Control (w/CF5)

Not Used

TAN

1047

PDM Class 2 Serial Data

ORN

4240

Battery Positive Voltage

Not Used

ORN

1340

Battery Positive Voltage

DK BLU

2115

Right Turn Signal Lamps Supply Voltage

WHT/BLK

2339

Lower Left Air Temperature Sensor Signal (w/CJ2)

Not Used

BRN

341

Ignition 3 Voltage

DK BLU

1646

Right Air Temperature Door Position Signal (w/CJ2)

WHT/BLK

1236

Right Air Temperature Door Control (w/CJ2)

DK GRN

1614

Recirculation Door Control (w/CJ2)

Fuse Block-Right I/P-C2

Connector Part Information

•

12193930

•	6-Way F Metri-Pack 280 Series Flexlock (BLK)

Wire Color

Circuit No.

Function

DK GRN

117

Right Front Speaker Output (-)

DK GRN

117

Right Front Speaker Output (-) (w/UQ3)

LT GRN

200

Right Front Speaker Output (+)

LT GRN

200

Right Front Speaker Output (+) (w/UQ3)

C-E

Not Used

BLK

1050

Ground

BLK

1050

Ground (w/o YE9)

Fuse Block-Right I/P-C4

Connector Part Information

•

12194037

•	12-Way F Metri-Pack 280 Series Flexlock (BRN)

Wire Color

Circuit No.

Function

BLK

1050

Ground

GRY/BLK

2337

Lower Right Air Temperature Sensor Signal (w/CJ2)

ORN

Blower Motor High Control (w/CJ3)

BRN

718

Low Reference-Air Temperature Sensor-Lower Left (w/CJ2)

BRN

718

Low Reference-Air Temperature Sensor-Lower Right (w/CJ2)

PPL

Medium 3 Blower Motor Control (w/CJ3)

RED

542

Battery Positive Voltage

PPL

1838

Recirculation Door Position Signal (w/CJ2)

TAN

Auxiliary Blower Motor Medium 1 Control (w/CJ3)

PPL/WHT

760

Blower Motor Speed Control (w/CJ2)

YEL

Blower Motor Low Control (w/CJ3)

LT BLU/BLK

1688

5 Volt Reference-Air temperature Actuator-Left (w/CJ2)

LT BLU/BLK

1688

5 Volt Reference-Air Temperature Actuator-Right (w/CJ2)

LT BLU/BLK

1688

5 Volt Reference-Mode Actuator (w/CJ2)

LT BLU/BLK

1688

5 Volt Reference-Recirculation Actuator (w/CJ2)

Not Used

YEL

1791

Low Reference-Recirculation Actuator (w/CJ2)

YEL

1791

Low Reference-Mode Actuator (w/CJ2)

YEL

1791

Low Reference-Air Temperature Actuator-Left (w/CJ2)

YEL

1791

Low Reference-Air Temperature Actuator-Right (w/CJ2)

Fuse Block-Right I/P-C5

Connector Part Information

•

12193924

•	6-Way F Metri-Pack 280 Series Flexlock (BRN)

Wire Color

Circuit No.

Function

Not Used

LT GRN

2275

Mode Door Position Signal (w/CJ2)

TAN

2273

Mode Door Control (w/CJ2)

DK BLU

1199

Left Air Temperature Door Control (w/CJ2)

LT BLU

733

Left Air Temperature Door Position Signal (w/CJ2)

Not Used

Fuse Block-Right I/P-C6 (w/CF5 & U01)

Connector Part Information

•

12193929

•	6-Way F Metri-Pack 280 Series Flexlock (LT GRN)

Wire Color

Circuit No.

Function

ORN

3840

Battery Positive Voltage (w/ CF5)

BRN

2409

Interior Park Lamps Supply Voltage (w/U01)

BLK

1050

Ground (w/ CF5)

BLK

1050

Ground (w/ CF5)

BLK

1050

Ground (w/ NYS)

DK BLU

1353

RAP Supply Voltage (w/ CF5)

BRN/WHT

230

Instrument Panel Lamps Dimming Control (w/CF5)

Not Used

Fuse Block-Right I/P-C7

Connector Part Information

•

12193922

•	6-Way F Metri-Pack 280 Series Flexlock (CRM)

Wire Color

Circuit No.

Function

Not Used

TAN

1047

PDM Class 2 Serial Data

ORN

4240

Battery Positive Voltage

Not Used

ORN

1340

Battery Positive Voltage

DK BLU

2115

Right Turn Signal Lamps Supply Voltage

Fuse Block-Right I/P-C8

Connector Part Information

•

12193928

•	6-Way F Metri-Pack 280 Series Flexlock (GRY)

Wire Color

Circuit No.

Function

WHT/BLK

2339

Lower Left Air Temperature Sensor Signal (w/CJ2)

BRN

341

Ignition 3 Voltage (w/CJ2)

BRN

341

Ignition 3 Voltage (w/CJ2)

BRN

341

Ignition 3 Voltage (w/CJ2)

BRN

341

Ignition 3 Voltage (w/CJ2)

DK BLU

1646

Right Air Temperature Door Position Signal (w/CJ2)

WHT/BLK

1236

Right Air Temperature Door Control (w/CJ2)

DK GRN

1614

Recirculation Door Control (w/CJ2)

Junction Block - Rear

Junction Block-Rear Lamps-C1

Connector Part Information

•

15305595

•	8-Way F GT 280 Sealed (BLU)

Wire Color

Circuit No.

Function

LT BLU

2114

Left Turn Signal Lamps Supply Voltage

LT BLU

1320

Stop Lamp Supply Voltage

LT GRN

Backup Lamp Supply Voltage

BRN/WHT

2609

Right Rear Park Lamps Supply Voltage

BLK

1750

Ground

Not Used

BRN

2509

Left Rear Park Lamps Supply Voltage

DK BLU

2115

Right Turn Signal Lamps Supply Voltage

Junction Block-Rear Lamps-C2

Connector Part Information

•

15305596

•	7-Way F GT 280 Series (GRY)

Wire Color

Circuit No.

Function

BLK

1750

Ground

BLK

1750

Ground

BLK

1750

Ground

LT BLU

1320

CHMSL Supply Voltage/Stop Lamp Supply Voltage

BRN

2509

Left Rear Tail Lamps Supply Voltage

LT GRN

Backup Lamp Supply Voltage

Not Used

LT BLU

2114

Left Turn Signal Lamps Supply Voltage

Junction Block-Rear Lamps-C3

Connector Part Information

•

15305599

•	8-Way F GT 280 Series (BRN)

Wire Color

Circuit No.

Function

BRN/WHT

2609

Right Rear Park Lamps Supply Voltage

Not Used

BLK

1750

Ground

BLK

1750

Ground (906 w/NYS)

BLK

1750

Ground (906 & NYS)

Not Used

BRN

2509

Left Rear Park Lamps Supply Voltage

BLK

1750

Ground

Junction Block-Rear Lamps-C4

Connector Part Information

•

15305597

•	7-Way F GT 280 Series (BLK)

Wire Color

Circuit No.

Function

LT BLU

1320

Stop Lamp Supply Voltage

BRN/WHT

2609

Right Rear Park Lamps Supply Voltage

BLK

1750

Ground

BLK

1750

Ground

LT GRN

Backup Lamp Supply Voltage

DK BLU

2115

Right Turn Signal Lamps Supply Voltage

Not Used

BLK

1750

Ground