Instrument dashboard Fuse Block

The fuse block access door is ~ above the driver’s next edge of the instrument panel. Pull off the cover to access the fuse block.

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GMC Sierra mk1 – fuse box – tool panel
Fuse/Circuit BreakerUsage
1Stop/TCC Switch, Buzzer, CHMSL, risk Lamps, Stoplamps
2Transfer Case
3Courtesy Lamps, Cargo Lamp, glove Box Lamp, Dome/Reading Lamps, Vanity Mirrors, Power Mirrors
4Instrument Cluster, DRL Relay, Lamp Switch, Keyless Entry, Low Coolant Module, Illuminated entry Module, DRAC (Diesel Engine)
5Not Used
6Cruise Control
7Auxiliary strength Outlet
8Crank
9License Lamp, Parking Lamps, Taillamps, Roof mite Lamps, Tailgate Lamps, Front Sidemarkers, Fog lamp Relay, Door move Illumination, Fender Lamps, Headlamp Switch Illumination
10Not Used
11Wiper Motor, Washer Pump
12A/C, A/C Blower, High Blower Relay
13Power Amp, tobacco Lighter, Door Lock Relay, Power Lumbar Seat
144WD Indicator, Cluster, Comfort Controls, instrument Switches, Radio Illumination, Chime Module
15DRL Relay, Fog desk lamp Relay
16Front and also Rear turn Signals, Back-Up Lamps, BTSI Solenoid
17Radio (Ignition)
184WAL/VCM, ABS, Cruise Control
19Radio (Battery)
20PRNDL, automatic Transmission, Speedometer, inspect Gages Warning Light
21Security/Steering
22Not Used
23Not Used
24Front Axle, 4WD Indicator Lamp, TP2 Relay (Gasoline Engine)
APower Door Lock, Six-Way Power Seat, Keyless entry Module
BPower Windows

Underhood Fuse/Relay Center

The underhood fuse/relay center is located in the behind of the engine compartment close to the brake liquid reservoir.

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GMC Sierra mk1 – fuse box – engine compartment
NameUsage
ECM-BFuel Pump, PCM/VCM
RR DEFOGRear home window Defogger
IGN-EAuxiliary fan Relay Coil, A/C Compressor Relay, Hot Fuel Module, double Tanks
HORNHorn, Underhood Lamps
AUX FANAuxiliary Fan
ECM-1Injectors, PCM/VCM, Fuel Solenoid (Diesel Engine, Fuel regulate Module (Diesel Engine)
HTD ST-FRNot Used
A/CAir Conditioning
HTD MIRNot Used
ENG-1Ignition Switch, EGR, Canister Purge, EVRV Idle coastline Solenoid, MAF, heated O2, Fuel Heater (Diesel Engine), Water Sensor (Diesel Engine), Boost Solenoid (Diesel Engine), EPR (Diesel Engine)
HTD ST-RRNot Used
LIGHTINGHeadlamp and also Panel Dimmer Switch, Fog and also Courtesy Fuses
BATTBattery, Fuse Block Busbar
IGN-AIgnition Switch
IGN-BIgnition Switch
ABSAnti-Lock Brake Module
BLOWERHigh Blower Relay
STOP/HAZStoplamps
HEATED SEATSNot Used

WARNING: Terminal and also harness assignments for individual connectors will vary depending on car equipment level, model, and also market.