IDENTIFICATION
WARNING: Vehicles are equipped with air bag supplemental restraint system. Before attempting any repairs involving steering column, instrument panel or related components, see SIR SERVICE PRECAUTIONS in AIR BAG RESTRAINT SYSTEMS article.
CAUTION: When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle.
COMPONENT LOCATION
For location of underhood fuse block and instrument panel fuse block, see illustrations below.
Fig. 1: Identifying Location Of Underhood Fuse Block
Courtesy of GENERAL MOTORS CORP.
Fig. 2: Identifying Location Of Instrument Panel Fuse Block
Courtesy of GENERAL MOTORS CORP.
INSTRUMENT PANEL FUSE BLOCK
Fuse & Relay Index Information
Instrument panel fuse block is located under center of instrument panel, access cover is on right (passenger side). See illustrations below.
Fig. 3: Identifying Location Of Instrument Panel Fuse Block
Courtesy of GENERAL MOTORS CORP.
Fig. 4: Identifying Instrument Panel Fuse Block Components
Courtesy of GENERAL MOTORS CORP.
IDENTIFYING FUSES (PASSENGER COMPARTMENT - FUSE BLOCK)Device Fuse Rating (A) Description AIRBAG 10A Inflatable Restraint I/P Module Indicator (AOS), Inflatable Restraint Sensing and Diagnostic Module (SDM) AIRBAG 10A Inflatable Restraint Sensing and Diagnostic Module (SDM) AIRCON 15A Data Link Connector (DLC), FATC/AIR CON, Rear Seat Audio, Rear Seat Entertainment, XM Radio Receiver APO1 20A Accessory Power Outlet - Center Console APO2 20A Accessory Power Outlet - Rear AUDIO 15A AUDIO System, Instrument Cluster, Remote Control Door Lock Receiver (RCDLR), Security LED, Universal Garage Door Opener (UGDO) BCM (VB1) 10A Body Control Module (BCM) BCM (VB2) 10A BCM (INADVERT/CTSY LMP PWR) BCM (VB3) 10A BCM (LH TURNHZD) BCM (VB4) 10A BCM (BACKUP/STOP) BCM (VB5) 10A BCM (Courtesy lamps, WASHER PUMP) BCM (VB6) 10A BCM (RH TURN/HZD) BCM (VB7) 10A BCM (DIM PWR) CIGAR 20A Cigar Lighter CLUSTER 10A Instrument Cluster, AOS Display DRL 15A HDLP Low Relay DR LCK 25A Door Lock Motor ECM/TCM 10A Engine Control Module (ECM), Transmission Control Module (TCM), FRT Fog Relay F/DR LCK 15A Front Driver Door Lock FSCM 10A Fuel System Control Module FSCM 20A Fuel System Control Module IGN SW 2A Ignition Switch, Immobilizer ISRVM 10A Compass,Inside Rearview Mirror, Rain Sensor KEY CAP 10A Key Capture Solenoid, Park Switch ONSTAR 10A ONSTAR Module OSRVM 2A Outside Rearview Mirror Switch PWR WIN DRIV 20A Driver Side Power Window PWR WIN PASS 30A Passenger Side Power Window PWR SEAT 20A Power Seat RR CLR 10A Liftgate Latch Assembly Power Release S/ROOF 10A Sunroof Module TRL 15A Trailer Stop/Turn Module WASHER 10A Washer Pump WHL SW 2A Steering Wheel Switch Spare - - Spare - - Spare - - Spare - -
IDENTIFYING RELAYS (PASSENGER COMPARTMENT - FUSE BLOCK)Device Description ACC/RAP Relay KEY CAP, OSRVM, DRIV PWR WIN , PASS PWR WIN and S/ROOF Fuses DRL Relay HDLP LO Relay DR LOCK Relay Door Lock Motor Control DR UNLOCK Relay Door Unlock Motor F/DR LCK Relay Front Driver Door Lock, Fuel Door Actuator FRT WASHER PUMP Relay Front Washer Pump REAR CLOSURE Relay Rear Closure Fuse RUN/CRANK Relay Airbag, Cluster, ECM/TCM, FSCM, ISRVM Fuses
UNDERHOOD FUSE BLOCK
Fuse & Relay Index Information - AWD
Underhood fuse block is located on driver's side inner fender in the engine compartment. See illustrations below.
Fig. 5: Identifying Location Of Underhood Fuse Block
Courtesy of GENERAL MOTORS CORP.
Fig. 6: Identifying Underhood Fuse Block Components
Courtesy of GENERAL MOTORS CORP.
IDENTIFYING FUSES (ENGINE COMPARTMENT - FUSE BLOCK - AWDDevice Fuse Rating (A) Description 4WD/ESCM 15A Battery Disconnect Switch (HP7), Evaporative Emissions Canister Vent Solenoid, Rear Differential Clutch Control Module, Starter Generator Control Module (SGCM) (HP7) ABS 40A Electronic Brake Control Module (EBCM) Motor ABS 20A Electronic Brake Control Module (EBCM) A/C CLUTCH 10A A/C CLUTCH Relay AMP 30A Audio Amplifier BCM 10A Body Control Module (BCM) Voltage Sensing BLWR 40A HVAC Blower Motor Control Module DEFOG 30A Rear Window Defogger DRL 15A Daytime Running Lights Resistor ECM 20A Engine Control Module (ECM) ECM/TCM/SGCM 15A Engine Control Module (ECM), Transmission Control Module (TCM) and Starter Generator Control Module (SGCM) (HP7) ENG 1 15A Evaporative Emissions Canister Purge Solenoid, Injector 1,Injector 2, Injector 3, Injector 4 (LAT), Injector 1, Injector 2, Injector 3, Injector4, Injector5, Injector6, (LZ4), Injector 1, Injector 3,Injector 5 (LY7) and Ignition Coil 1, Ignition Coil 3, Ignition Coil 5 (LY7) ENG 2 15A Injectors 2, 4, 6 (LY7), Ignition Module (LZ4), Ignition Coil 1, Ignition Coil 2, Ignition Coil 3, Ignition Coil 4 (LAT) and Ignition Coil 2, Ignition Coil 4, Ignition Coil 6 (LY7) ENG 3 15A Evaporative Emissions (EVAP) Canister Purge Solenoid Valve, Heated Oxygen Sensors (HO2S), Mass Air Flow (MAF) Intake Air Temperature (IAT) Sensor FAN AUX 40A Engine Cooling Fan - Right FAN MAIN 40A Engine Cooling Fan - Left FRT FOG 20A FOG LAMP HTD SEAT 20A Heated Seat Switch Driver, Heated Seat Switch Passenger HDLP HI LT 10A Headlamp - Left High Beam HDLP HI RT 10A Headlamp - Right High Beam HDLP LO LT 10A Headlamp - Left Low Beam HDLP LO RT 10A Headlamp - Right Low Beam HORN 15A HORN Relay HYBRID BEC 30A Fuse Block - Auxiliary (HP7) IP BEC 60A I/P Fuse Block - AIR BAG, AIRCON, AUX OUTLET1, AUX OUTLET 2, BCM(VB1), BCM(VB2), BCM(VB3), BCM(VB4), BCM(VB5), BCM(VB6), BCM(VB7), CIGAR, DRL, DR LOCK, F /DR LK, FSCM, IGNITION SW, MEMORY, ONSTAR, PROVISION, POWER SEAT, REAR CLOSURE, TRAILER STOP/TURN , WASHER Fuses; DRLOCK, DR UNLOCK, F/DR LK, FRT WASHER PUMPAND REAR CLOSURE Relays IP BEC 40A I/P Fuse Block Fuses - Airbag, Cluster, ECM/TCM, FSCM, ISRVM/RAIN, KEY CAPTURS, OSRVM, PROVISION, PWR WIN DRIV, PWR WIN PASS, SUNROOF, and the ACC/RAP, RUN/CRANK Relays OSRVM HTR 10A Heated Washer Nozzle - Left, Heated Washer Nozzle - Right, Outside Rear View Mirror - Driver, Outside Rear View Mirror - Passenger REAR WPR 20A Rear Window Wiper Motor RUN 10A I/P Fuse Block Ignition 2, Heated Seat Control Module - Driver, Heated Seat Control Module - Passenger, Haeted Seat Element - Driver Cushion, Haeted Seat Element - Driver Back,Haeted Seat Element - Passenger Cushion, Haeted Seat Element - Passenger Back STRTR 20A STARTER Relay STOP LP 10A Stop Lamp - Left, Stop Lamp - Right S/ROOF 20A Sunroof Control Module T/LAMP LT 10A Park/Turn Lamp - Left, Marker Lamp - Left Front and Tail Lamp - Left T/LAMP RT 10A Park/Turn Lamp - Right, Marker Lamp - Right Front and Tail Lamp - Right TRLR T/LAMP 10A Trailer Connector Adapter WRP 25A WIPER CONTROL Relay, Wiper Speed Relay Spare 10A Spare Spare 15A Spare Spare 25V Spare Relays 30A Spare
IDENTIFYING RELAYS (ENGINE COMPARTMENT - FUSE BLOCK - AWD)Device Description A/C CLUTCH Relay A/C Compressor Clutch DEFOG Relay Rear Window Defogger and Heating Fuse FAN AUX Relay Right Engine Cooling Fan FAN MAIN Relay Left Engine Cooling Fan FAN CNTRL Relay Right Engine Cooling Fan FRT FOG Relay FRT FOG Fuse HDLP HI Relay HDLP LO Relay HDLP LO Relay HDLP LO LT, HDLP LO RT, DRL Fuses HORN Relay Horn PWR/TRN Relay ECM, ENG1, ENG2, ENG3 Fuses RUN Relay Run Fuse STRTR Relay Starter Motor STOP LP Relay STOP LP Fuse T/LAMP Relay T/LAMP LT Fuse, T/LAMP RT Fuse, TRLR T/LAMP Fuse WPR CNTRL Relay Windshield Wiper Motor WPR SPD Relay Wiper Motor Speed
Fuse, Relay & Diode Index Information - FWD
Underhood fuse block is located on driver's side inner fender in the engine compartment. See illustrations below.
Fig. 7: Identifying Location Of Underhood Fuse Block
Courtesy of GENERAL MOTORS CORP.
Fig. 8: Identifying Underhood Fuse Block Components
Courtesy of GENERAL MOTORS CORP.
IDENTIFYING FUSES (ENGINE COMPARTMENT - FUSE BLOCK - FWD)Device Fuse Rating (A) Description 4WD/ESCM 15A Battery Disconnect Switch (HP7), Evaporative Emissions Canister Vent Solenoid, Rear Differential Clutch Control Module, Starter Generator Control Module (SGCM) (HP7) ABS 40A Electronic Brake Control Module (EBCM) Motor ABS 20A Electronic Brake Control Module (EBCM) A/C CLUTCH 10A A/C CLUTCH Relay AMP 30A Audio Amplifier BCM 10A Body Control Module (BCM) Voltage Sensing BLWR 40A HVAC Blower Motor Control Module DEFOG 30A Rear Window Defogger DRL 15A Daytime Running Lights Resistor ECM 20A Engine Control Module (ECM) ECM/TCM/SGCM 15A Engine Control Module (ECM), Transmission Control Module (TCM) and Starter Generator Control Module (SGCM) (HP7) ENG 1 15A Evaporative Emissions Canister Purge Solenoid, Injector 1,Injector 2, Injector 3, Injector 4 (LAT), Injector 1, Injector 2, Injector 3, Injector4, Injector5, Injector6, (LZ4), Injector 1, Injector 3,Injector 5 (LY7) and Ignition Coil 1, Ignition Coil 3, Ignition Coil 5 (LY7) ENG 2 15A Injectors 2, 4, 6 (LY7), Ignition Module (LZ4), Ignition Coil 1, Ignition Coil 2, Ignition Coil 3, Ignition Coil 4 (LAT) and Ignition Coil 2, Ignition Coil 4, Ignition Coil 6 (LY7) ENG 3 15A Evaporative Emissions (EVAP) Canister Purge Solenoid Valve, Heated Oxygen Sensors (HO2S), Mass Air Flow (MAF) Intake Air Temperature (IAT) Sensor FAN AUX 40A Engine Cooling Fan - Right FAN MAIN 40A Engine Cooling Fan - Left FRT FOG 20A FOG LAMP HTD SEAT 20A Heated Seat Switch Driver, Heated Seat Switch Passenger HDLP HI LT 10A Headlamp - Left High Beam HDLP HI RT 10A Headlamp - Right High Beam HDLP LO LT 10A Headlamp - Left Low Beam HDLP LO RT 10A Headlamp - Right Low Beam HORN 15A HORN Relay HYBRID BEC 30A Fuse Block - Auxiliary (HP7) IP BEC 60A I/P Fuse Block - AIR BAG, AIRCON, AUX OUTLET1, AUX OUTLET 2, BCM(VB1), BCM(VB2), BCM(VB3), BCM(VB4), BCM(VB5), BCM(VB6), BCM(VB7), CIGAR, DRL, DR LOCK, F /DR LK, FSCM, IGNITION SW, MEMORY, ONSTAR, PROVISION, POWER SEAT, REAR CLOSURE, TRAILER STOP/TURN , WASHER Fuses; DRLOCK, DR UNLOCK, F/DR LK, FRT WASHER PUMPAND REAR CLOSURE Relays IP BEC 40A I/P Fuse Block Fuses - Airbag, Cluster, ECM/TCM, FSCM, ISRVM/RAIN, KEY CAPTURS, OSRVM, PROVISION, PWR WIN DRIV, PWR WIN PASS, SUNROOF, and the ACC/RAP, RUN/CRANK Relays OSRVM HTR 10A Heated Washer Nozzle - Left, Heated Washer Nozzle - Right, Outside Rear View Mirror - Driver, Outside Rear View Mirror - Passenger REAR WPR 20A Rear Window Wiper Motor RUN 10A I/P Fuse Block Ignition 2, Heated Seat Control Module - Driver, Heated Seat Control Module - Passenger, Haeted Seat Element - Driver Cushion, Haeted Seat Element - Driver Back,Haeted Seat Element - Passenger Cushion, Haeted Seat Element - Passenger Back STRTR 20A STARTER Relay STOP LP 10A Stop Lamp - Left, Stop Lamp - Right S/ROOF 20A Sunroof Control Module T/LAMP LT 10A Park/Turn Lamp - Left, Marker Lamp - Left Front and Tail Lamp - Left T/LAMP RT 10A Park/Turn Lamp - Right, Marker Lamp - Right Front and Tail Lamp - Right TRLR T/LAMP 10A Trailer Connector Adapter WRP 25A WIPER CONTROL Relay, Wiper Speed Relay Spare 10A Spare Spare 15A Spare Spare 25V Spare Relays 30A Spare
IDENTIFYING RELAYS (ENGINE COMPARTMENT - FUSE BLOCK - FWD)Device Description A/C CLUTCH Relay A/C Compressor Clutch DEFOG Relay Rear Window Defogger and Heating Fuse FAN AUX Relay Right Engine Cooling Fan FAN MAIN Relay Left Engine Cooling Fan FAN CNTRL Relay Right Engine Cooling Fan FRT FOG Relay FRT FOG Fuse HDLP HI Relay HDLP LO Relay HDLP LO Relay HDLP LO LT, HDLP LO RT, DRL Fuses HORN Relay Horn PWR/TRN Relay ECM, ENG1, ENG2, ENG3 Fuses RUN Relay Run Fuse STRTR Relay Starter Motor STOP LP Relay STOP LP Fuse T/LAMP Relay T/LAMP LT Fuse, T/LAMP RT Fuse, TRLR T/LAMP Fuse WPR CNTRL Relay Windshield Wiper Motor WPR SPD Relay Wiper Motor Speed
Auxiliary Fuse Block (HP7)
To identify the auxiliary fuse block, see illustration below.
Fig. 9: Identifying Underhood Auxiliary Fuse Block Components
Courtesy of GENERAL MOTORS CORP.
IDENTIFYING FUSES (ENGINE COMPARTMENT - AUXILIARY FUSE BLOCK)Device Fuses Rating (A) Description AUX TRANSPUMP 20A Automatic Transmission Auxiliary Fluid Pump HILL HOLD VLVS 10A HILL HOLD VLVS Relay HYBRID PUMPS 20A Coolant Pump - Auxiliary
IDENTIFYING RELAYS (ENGINE COMPARTMENT - AUXILIARY FUSE BLOCK)Device Description AUX TRANSPUMP Relay Starter Generator Control Module (SGCM) HILL HOLD VLVS Relay Hill Hold Barke Delay Valves, Starter Generator Control Module (SGCM)
Inline Fuse - Electric Power Steering (EPS)(LAT/LE5)
The Electric Power Steering (ESP) inline fuse is a 2-way mini fuse connector (BK). To identify inline connector, see illustration below, for location refer to ELECTRONIC POWER STEERING and POWER DISTRIBUTION wiring diagrams.
Fig. 10: Identifying Inline Fuse - Electric Power Steering
Courtesy of GENERAL MOTORS CORP.
CIRCUIT PROTECTION - FUSES
Identifying fuse types, refer to table below.
IDENTIFYING FUSE TYPESCurrent Rating Amperes Color Auto Fuses, Mini Fuses 2A Gray 3A Violet 5A Tan 7.5A Brown 10A Red 15A Blue 20A Yellow 25A White or Natural 30A Green Maxi Fuses 20A Yellow 30A Light Green 40A Orange or Amber 60A Blue 50A Red J-Case Fuses 20A Blue 30A Pink 40A Green 50A Red 60A Yellow
