GM Service Manual Online
For 1990-2009 cars only

Electrical Center Identification Views Label

Table 1: Fuse Block - Underhood Details (Uplevel Pickup)
Table 2: Fuse Block - Underhood Details (Uplevel Utility)
Table 3: Fuse Block - I/P Detail

Fuse Block - Underhood Details (Base Pickup)


Object Number: 669174  Size: MF

Fuse/Circuit Breaker

Rating

Description

MaxiFuses

INT BATT

50A

HDLP SW, AUX PWR, RDO BATT, CIGAR LTR, and CTSY LP Fuses

ABS

60A

Electronic Brake Control Module (EBCM)

IGN B

50A

Ignition Switch

RAP

50A

Retained Accessory Power (RAP) Relay

IGN A

40A

Starter Relay and Ignition Switch

STUD #2

30A

Not Used

Mini Fuses

TRL TRN

10A

Not Used

LT TRN

10A

Park/Turn Signal Lamp - LR

BTSI

10A

Stop Lamp Switch and Transfer Case Shift Control Module (w/ NP1)

PARK LP

20A

Park Lamp Relay, Headlamp Grounding Relay, and Headlamp Switch

HVAC

30A

Blower Motor Relay

HAZ LP

20A

Multifunction Switch (Hazard)

TRR TRN

10A

Not Used

RT TRN

10A

Park/Turn Signal Lamp - RR

TRCHMSL

10A

Not Used

VECHMSL

10A

Center High Mounted Stop Lamp (CHMSL), and Cruise Control Module (CCM)

TRL B/U

10A

Not Used

ECM I

15A

Electronic Ignition Control Module (EICM), Powertrain Control Module (PCM), Crankshaft Position (CKP) Sensor, Central Sequential Fuel Injection (CSFI), Fuel Injectors 1-6 (4.3 L only), and Ignition Coil (4.3 L only)

LD LEV

25A

Not Used

VEH B/U

15A

Backup Lamps - Right/Left

ENG I

10A

Evaporative Emission (EVAP) Canister Purge Solenoid, Evaporative Emission (EVAP) Canister Vent Solenoid, Mass Air Flow (MAF) Sensor (4.3 L), and Camshaft Position (CMP) Sensor (4.3 L)

OXYSEN

20A

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1, Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 (4.3 L only), Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 (4.3 L only)

RR PRK

10A

License Lamp, Marker Lamp, and Park/Turn Signal Lamp - RR

ECM B

20A

Fuel Pump Relay, Powertrain Control Module (PCM)

B/U LP

25A

Backup Lamp Switch (w/ M/T) or Park Neutral Position (PNP) and Backup Lamp Switch (w/ A/T)

IGN E

10A

A/C Compressor Relay, Secondary Air Injector (AIR) Relay (w/ California Emissions only)

LR PRK

10A

License Lamp, Marker Lamp, and Park/Turn Signal Lamp - LR

RR DEFOG

30A

Not Used

TRL PRK

10A

Not Used

LT HDLP

15A

Headlamp - Low Beam - Left, and Daytime Running Lamp (DRL) Relay

HTD MIR

10A

Not Used

RT HDLP

15A

Headlamp - Low Beam - Right, and Headlamp - High Beam - Right

MIR/LKS

3A

Outside Rear View Mirror Switch, Door Lock and Side Window Switch, LH/RH

ATC

20A

Transfer Case Shift Control Module

A/C

10A

Not Used

FOG LP

15A

Daytime Running Lamps (DRL) Relay

TBC

10A

Body Control Module (BCM) and Multifunction Switch (Flash to Pass)

RT TURN

10A

Park/Turn Signal Lamp - RR, and Marker Lamp

CRANK

10A

Transfer Case Shift Control Module, Clutch Pedal Position (CPP) Switch (M/T Only), and Park/Neutral Position (PNP) and Backup Lamp Switch (A/T Only)

LT TURN

10A

Park/Turn Signal Lamp - LR, and Marker Lamp

FR PRK

10A

Park/Turn Signal Lamps - LR/RR, Marker Lamps

W/W PMP

10A

Not Used

IGN C

20A

Ignition Switch

STOP LP

20A

Stop Lamp Switch and Center High Mounted Stop Lamp (CHMSL) Relay

HDLP W/W

15A

Not Used

HORN

15A

Horn - Left/Right

HTD SEAT

20A

Not Used

RR W/W

15A

Not Used

Micro Relays

F/PUMP

--

Fuel Pump and Fuel Injectors (2.2 L)

DRL

--

Headlamp - High Beam - Left

LIFT GLASS

--

Not Used

A/C

--

Not Used

FOG LP

--

Not Used

HORN

--

HORN Fuse

CHMSL

--

Multifunction Switch supplies the LT TURN, RT TURN, RT TRN, and LT TRN fuses

Mini Relays

STARTER

--

Starter Solenoid (Coil)

RR DEFOG

--

Not Used

HDLP PWR

--

RT HDLP, and LT HDLP fuses

Fuse Block - Underhood Details (Uplevel Pickup)


Object Number: 669174  Size: MF

Fuse Block - Underhood Details (Uplevel Pickup)

Fuse/Circuit Breaker

Rating

Description

MaxiFuses

INT BATT

50A

HDLP SW, AUX PWR, RDO BATT, CIGAR LTR, CTSY LP, and PWR LKS Fuses

ABS

60A

Electronic Brake Control Module (EBCM)

IGN B

50A

Ignition Switch

RAP

50A

Retained Accessory Power (RAP) Relay

IGN A

40A

Starter Relay and Ignition Switch

STUD #2

30A

Not Used

Mini Fuses

TRL TRN

10A

Not Used

LT TRN

10A

Park/Turn Signal Lamp - LR

BTSI

10A

Stop Lamp Switch, and Transfer Case Shift Control Module (w/ NP1)

PARK LP

20A

Park Lamp Relay, Headlamp Grounding Relay, and Headlamp Switch

HVAC

30A

Blower Motor Relay

HAZ LP

20A

Multifunction Switch (Hazard)

TRR TRN

10A

Not Used

RT TRN

10A

Park/Turn Signal Lamp - RR

TRCHMSL

10A

Not Used

VECHMSL

10A

Center High Mounted Stop Lamp (CHMSL), and Cruise Control Module (CCM)

TRL B/U

10A

Not Used

ECM I

15A

Ignition Control Module (ICM), Powertrain Control Module (PCM), Crankshaft Position (CKP) Sensor, Fuel Injectors 1-6 (4. 3L only), and Ignition Coil (4.3 L only)

LD LEV

25A

Not Used

VEH B/U

15A

Backup Lamps - Right/Left

ENG I

10A

Evaporative Emission (EVAP) Canister Purge Solenoid, Evaporative Emission (EVAP) Canister Vent Solenoid, Mass Air Flow (MAF) Sensor (4.3 L), and Camshaft Position (CMP) Sensor (4.3 L)

OXYSEN

20A

Heated Oxygen Sensor (HO2S) Bank 1, Sensor 1, Heated Oxygen Sensor (HO2S) Bank 1, Sensor 3 (4.3 L only), Heated Oxygen Sensor (HO2S) Bank 2, Sensor 1 (4.3 L only)

RR PRK

10A

License Lamp, Marker Lamp, and Park/Turn Signal Lamp - RR

ECM B

20A

Fuel Pump Relay, Powertrain Control Module (PCM)

B/U LP

25A

Park Neutral Position (PNP) and Backup Lamp Switch

IGN E

10A

A/C Compressor Relay, Secondary Air Injection (AIR) Relay (w/ California Emissions only) and Rear Defogger Relay

LR PRK

10A

License Lamp, Marker Lamp, and Park/Turn Signal Lamp - LR

RR DEFOG

30A

Not Used

TRL PRK

10A

Not Used

LT HDLP

15A

Headlamp - Low Beam - Left, and Daytime Running Lamp (DRL) Relay

HTD MIR

10A

Outside Rear View Mirror - Driver/Passenger (Heating Element)

RT HDLP

15A

Headlamp - Low Beam - Right, and Headlamp - High Beam - Right

MIR/LKS

3A

Outside Rear View Mirror Switch, Door Lock and Side Window Switch, LH/RH

ATC

20A

Transfer Case Shift Control Module, and Transfer Case Encoder Motor (w/o NP1)

A/C

10A

A/C Compressor Relay

FOG LP

15A

Fog Lamp Relay, and Daytime Running Lamps (DRL) Relay

TBC

10A

Body Control Module (BCM), Remote Control Door Lock Receiver, and Multifunction Switch (Flash to Pass )

RT TURN

10A

Park/Turn Signal Lamp - RR, and Marker Lamp

CRANK

10A

Transfer Case Shift Control Module, Clutch Pedal Position (CPP) Switch (M/T Only), and Park/Neutral Position (PNP) and Backup Lamp Switch (A/T Only)

LT TURN

10A

Park/Turn Signal Lamp - LR, and Marker Lamp

FR PRK

10A

Park/Turn Signal Lamp - LR/RR, and Marker Lamps

W/W PMP

10A

Not Used

IGN C

20A

Ignition Switch

STOP LP

20A

Stop Lamp Switch and Center High Mounted Stop Lamp (CHMSL) Relay

HDLP W/W

15A

Not Used

HORN

15A

Horn - Left/Right

HTD SEAT

20A

Not Used

RR W/W

15A

Not Used

Micro Relays

F/PUMP

--

Fuel Pump, and Fuel Injectors (2.2 L)

DRL

--

Headlamp - High Beam - Left

LIFT GLASS

--

Not Used

A/C

--

A/C Compressor

FOG LP

--

Fog Lamps and Fog Lamp Switch

HORN

--

HORN fuse

CHMSL

--

Multifunction Switch supplies the LT TURN, RT TURN, RT TRN, and LT TRN Fuses

Mini Relays

STARTER

--

Starter Solenoid (Coil)

RR DEFOG

--

HTD MIR Fuse

HDLP PWR

--

RT HDLP, and LT HDLP fuses

Fuse Block - Underhood Details (Uplevel Utility)


Object Number: 669174  Size: MF

Fuse Block - Underhood Details (Uplevel Utility)

Fuse/Circuit Breaker

Rating

Description

MaxiFuses

INT BATT

50A

HDLP SW, AUX PWR, RDO BATT, CIGAR LTR, CTSY LP, and PWR LKS Fuses, and AMPF Fuse (w/ Premium Audio)

ABS

60A

Electronic Brake Control Module (EBCM)

IGN B

50A

Ignition Switch

RAP

50A

Retained Accessory Power (RAP) Relay, POWER SEATS Circuit Breaker (w/ Power Seats)

IGN A

40A

Starter Relay and Ignition and Start Switch

STUD #2

30A

Trailer Wiring Provision (Power Aux)

Mini Fuses

TRL TRN

10A

Trailer Wiring Provision (LP - Stop, T/Sig - LH)

LT TRN

10A

Park/Turn Signal Lamp - LR, Turn Signal Lamp - LR (Export)

BTSI

10A

Stop Lamp Switch, Transfer Case Shift Control Module (w/ NP1), and Automatic Transmission Shift Lock Actuator (w/ Floor Shift A/T Only)

PARK LP

20A

Park Lamp Relay, Headlamp Grounding Relay, and Headlamp Switch

HVAC

30A

Blower Motor Relay (w/o Electronic Climate Control), Blower Motor Control Module (w/ Electronic Climate Control)

HAZ LP

20A

Multifunction Switch (Hazard)

TRR TRN

10A

Trailer Wiring Provision (LP - Stop, T/Sig - RH

RT TRN

10A

Park/Turn Signal Lamp - RR, Turn Signal Lamp - RR (Export)

TRCHMSL

10A

Trailer Wiring Provision (LP - High MT Stop)

VECHMSL

10A

Center High Mounted Stop Lamp (CHMSL), Center High Mounted Stop Lamp (CHMSL) Resistor, Cruise Control Module (CCM), and Tail/Stop Lamp - LH/RH (Export)

TRL B/U

10A

Trailer wiring Provision (LP-B/U)

ECM I

15A

Ignition Control Module (ICM), Crankshaft Position (CKP) Sensor, Central Sequential Fuel Injection (Central SFI), Fuel Injectors 1-6, and Ignition Coil

LD LEV

25A

Not Used

VEH B/U

15A

Backup Lamp - Right/Left, Inside Rear View Mirror (w/ Automatic Day - Night Mirror Only)

ENG I

10A

Evaporative Emission (EVAP) Canister Purge Solenoid, Evaporative Emission (EVAP) Canister Vent Solenoid, Mass Air Flow (MAF) Sensor, and Camshaft Position (CMP) Sensor

OXYSEN

20A

Heated Oxygen Sensor (HO2S) Bank 1, Sensor 1, Heated Oxygen Sensor (HO2S) Bank 1, Sensor 3, Heated Oxygen Sensor (HO2S) Bank 2, Sensor 1

RR PRK

10A

Park/Turn Signal Lamps - RR (Domestic), Tail/Stoplamp - RH (Export)

ECM B

20A

Fuel Pump Relay

B/U LP

25A

Backup Lamp Switch (w/ M/T) and Park Neutral Position (PNP) and Backup Lamp Switch (w/ A/T)

IGN E

10A

A/C Compressor Relay, Secondary Air Injection (AIR) Relay (w/ California Emissions only), Rear Defogger Relay, Headlamp Leveling Switch (Export), and Headlamp Leveling Actuator Motor, LH/RH (Export), Automatic Level Control (ALC) Sensor and Compressor (Envoy)

LR PRK

10A

Park/Turn Signal Lamps - LR (Domestic) and Tail/Stoplamp - LH (Export)

RR DEFOG

30A

Rear Window Defogger Grid

TRL PRK

10A

License Lamps, and Trailer Wiring Provisions (LP Park)

LT HDLP

15A

Daytime Running Lamps (DRL) Relay and Headlamp - Low Beam - Left

HTD MIR

10A

Outside Rearview Mirror - Right/Left(Heating Element)

RT HDLP

15A

Headlamp - Low Beam - Right, and Headlamp - High Beam - Right

MIR/LKS

3A

Outside Rear View Mirror Switch, Door Lock and Side Window Switch - Left/Right, Lift Glass Relay, Liftgate or Endgate Lock Cylinder Switch

ATC

20A

Transfer Case Shift Control Module, and Transfer Case Encoder Motor (w/o NP1) (Except Bravada)

A/C

10A

A/C Compressor Relay

FOG LP

15A

Fog Lamp Relay, and Daytime Running Lamps (DRL) Relay

TBC

10A

Body Control Module (BCM), Remote Control Door Lock Receiver (RCDLR), and Multifunction Switch (Flash to Pass)

RT TURN

10A

Park/Turn Signal Lamp - RH, Marker Lamp, Repeater Lamps (Export)

CRANK

10A

Transfer Case Shift Control Module, Clutch Pedal Position (CPP) Switch (M/T Only), and Park/Neutral Position (PNP) and Backup Lamp Switch (A/T Only)

LT TURN

10A

Park/Turn Signal Lamp - LH, Marker Lamp, Repeater Lamp (Export)

FR PRK

10A

Park/Turn Signal Lamp - LH/RH (Domestic), Marker Lamp, Headlamp Washer Pump Relay (Export)

W/W PMP

10A

Headlamp Washer Fluid Pump Relay (Export Only)

IGN C

20A

Ignition Switch

STOP LP

20A

Stop Lamp Switch

HDLP W/W

15A

Headlamp Washer Fluid Pump Relay (Export Only)

HORN

15A

Horn - Left/Right

HTD SEAT

20A

Seat Heater Module, LH/RH (w/ Heated Seats), Lumbar Switch, RH, LH (w/ Heat and Lumbar)

RR W/W

15A

Rear Window Wiper Motor

Micro Relays

F/PUMP

--

Fuel Pump

DRL

--

Headlamp - High Beam - Left

LIFT GLASS

--

Liftgate/Endgate Window Release Actuator

A/C

--

A/C Compressor

FOG LP

--

Fog Lamps and Fog Lamp Switch

HORN

--

HORN fuse

CHMSL

--

Not Used

Mini Relays

STARTER

--

Starter Solenoid (Coil)

RR DEFOG

--

RR DEFOG, and HTD MIR fuses

HDLP PWR

--

RT HDLP, and LT HDLP fuses

Fuse Block - I/P Detail


Object Number: 547722  Size: MF

Fuse Block - I/P Detail

Fuse No.

Fuse/Circuit Breaker

Rating

Description

1

--

--

Not Used

2

CIGAR LTR

15A

Cigar Lighter, DLC

3

CRUISE

10A

BCM, CCM, Multifunction Switch (Cruise Control Switch), Seat Lumbar Switch - Driver/Front Passenger

4

GAUGES

10A

BCM, IPC

5

PARK LP

10A

BCM, Outside Rear View Mirror Switch, Door Lock and Side Window Switch - Driver/Front Passenger, Side Window Lockout Switch, and Rear Seat Audio Control (Envoy only), IP Ashtray Lamp (Except Envoy)

6

STR WHL ILLUM

2A

Redundant Steering Wheel Controls (Utility Only)

7

HDLP SW

10A

Headlamp Switch

8

CTSY LP

10A

Courtesy Lamps - Left/Right Console, Inadvertent Power Relay, Transfer Case Shift Control Module (NP1)

9

HVAC

20A

HVAC Control Module

10

TURN

20A

Multifunction Switch (Hazard Switch)

11

CLSTR

10A

IPC, PCM (2.2 L), Automatic Transmission Shift Lock Actuator (4.3 L w/ Floor Shift A/T), and Automatic Transmission

12

ILLUM

10A

Radio, HVAC Control Module, Fog Lamp Switch, Rear Wiper/Washer and Endgate/Liftgate Window Release Switch (Utility), DIC (Utility), Automatic Transmission Shift Lever Position Indicator (Utility, w/ Floor Shift A/T), Automatic transmission Preference Switch (GMC Jimmy Only), Inflatable Restraint IP Module Switch (Pickup), BCM, Transfer Case Select Switch, IPC, Headlamp Leveling Switch (Export)

13

AUX PWR

20A

Accessory Power Outlet - Left/Right, Accessory Power Outlet - Floor Console (Envoy), Accessory Power Outlet - Rear (Envoy)

14

PWR LKS

15A

Door Lock Relay, Door Unlock Relay, and Door Unlock Relay - Driver (w/ Power Door Locks)

15

4WD

10A

PCM, Transfer Case Shift Control Module, Transfer Case Shift Control Switch (w/ NP1 or NP8), Front Axle Vacuum Solenoid (w/ NP1 or NP8), Front Axle Indicator Switch (w/ NP1 or NP8)

16

SIR

15A

Inflatable Restraint IP Module Switch (Pickup Only), Inflatable Restraint Sensing and Diagnostic Module (SDM)

17

FRT WPR

25A

Windshield Wiper Motor, Multifunction Switch (Wiper Switch)

18

STR WHL RDO IGN

2A

Redundant Steering Wheel Controls (Utility only)

19

RDO BATT

15A

Radio, IPC, HVAC Control Module, VIU (Envoy only), Remote Playback Device - Cassette Player, (Bravada only)

20

AMPF

25A

Audio Amplifier (w/ Premium Audio)

21

HVAC I

10A

Air Temperature Actuator, HVAC Control Module, Inside Rear View Mirror (Utility w/Automatic Day - Night Mirror), Air Temperature Sensor Assembly - Inside (Utility), Vacuum Control Assembly

22

ABS

10A

Stop Lamp Switch, Electronic Brake Control Module (EBCM)

23

RR WPR

15A

Rear Wiper/Washer Switch, Endgate/liftgate Window Release Switch (Utility)

Sunroof Switch (Late Production Pickup w/ ZXR/Extreme)

24

RDO IGN

10A

Radio, DIC (Utility), Rear Seat Audio (RSA) Module (Envoy), VIU (Envoy), Outside Rear View Mirror Switch (Envoy)

Electrical Center Identification Views Terminal Location Views

Figure 1:

Fuse Block - Underhood


Object Number: 547748  Size: LF
Figure 2:

Relay Block - Body


Object Number: 547756  Size: LH