Page 1 of 5 UNDERHOOD FUSE BLOCK NOTE: Underhood fuse block is located at the left side of the engine compartment to the rear of the battery. See Fig. 7. Fig. 7: Locating Underhood Fuse Block Courtesy of GENERAL MOTORS CORP.
Page 2 of 5 Fig. 8: Identifying Underhood Fuse Block Components Courtesy of GENERAL MOTORS CORP. Fuse Block - Underhood STUD 1 Fuse - Trailer Wiring, Auxiliary Battery Relay and Battery Right (TP2), AUX HTR PMP Fuse (HP2), ESCM Fuse (HP2), HCM-B Fuse (HP2) and TRANS PUMP Fuse (HP2) MBEC 1 Fuse 50A SEAT CB, RT DOOR CB BLWR Fuse 40A Blower Motor LBEC 2 Fuse 50A LOCKS Fuse, DDM Fuse, PDM Fuse, ECC Fuse, AUX PWR 2 Fuse STUD 2 Fuse 30A Trailer Wiring, Emergency Vehicle Roof Lamp Relay ABS Fuse 60A Electronic Brake Control Module (EBCM)
Page 3 of 5 VSES/ECAS Fuse 60A Not Used IGN A Fuse 40A Ignition Switch RUN, START, RUN/START/ACCY, STARTER Relay IGN B Fuse 40A Ignition Switch RUN/ACC, RUN/START LBEC 1 Fuse 50A FLASH Fuse, TBC 2A Fuse, TBC 2B Fuse, TBC 2C Fuse, LT DOORS Fuse TRL PARK Fuse Trailer Wiring RR PARK Fuse Exterior Lamps-Right Rear, Clearance Lamps- Right LR PARK Fuse Exterior Lamps-Left Rear, Clearance Lamps- Left PARK LP Relay - TRL PARK Fuse, LR PARK Fuse, RR PARK Fuse, FRT PARK Fuse, INT PARK Fuse DRL Relay (Export) STRTR Relay - Starter INTPARK Fuse Power Take-Off (PTO) Switch, Inflatable Restraint I/P Module Disable Switch STOP LP Fuse 25A Stop Lamp Switch TBC BATT Fuse Body Control Module (BCM), PASS-Key Module S/ROOF Fuse 25A Sunroof Module Control SEO B2 Fuse 30A Roof Beacon Relay 4WS Fuse Rear Wheel Steering Control Module, Evaporative Emission (EVAP) Canister Vent Solenoid RR HVAC 30A Not Used AUX PWR Fuse 20A Accessory Power Outlets, Auxiliary Power Outlets PCM 1 Fuse Powertrain Control Module (PCM), Mass Air Flow (MAF) Sensor, Evaporative Emission (EVAP) Canister Purge Solenoid, Fuel Composition Sensor, Secondary Fuel Pump Relay ETC/ECM Fuse Throttle Actuator Control (TAC) INJ 1 Fuse Fuel Injectors-Odd-Numbered, Ignition Coils- (Gas)/ECMRPCV Fuse Odd-Numbered (Gas) (Diesel) #2 Engine Control Module (ECM) (Diesel) Fuel Injectors-Even-Numbered, Ignition Coils- INJ 2 Fuse (Gas)/EDU Fuse Even-Numbered (Gas) (Diesel) #1 25A Fuel Injector Control Module (FICM) (Diesel) A/C COMP Relay, Park/Neutral Position (PNP) IGN E Fuse Switch, Turn Signal/Multifunction Switch, Headlamp Leveling Components, Clutch Start Switch IGN 1 Relay (Gas)/EDU SBA Fuse, ETC/ECM Fuse, PCM 1 Fuse, INJ 1 - Relay (Diesel) #5 Fuse, INJ 2 Fuse
Page 4 of 5 - ECMRPCV Fuse, EDU Fuse (Diesel) RTD Fuse 30A Not Used TRL B/U Fuse Body Control Module (BCM), Trailer Wiring, Back-Up Alarm PCM B Fuse 20A Powertrain Control Module, F/PMP Relay F/PMP Relay - Fuel Pump O2 A Fuse (Gas)/FUEL HT Fuse (Diesel) #3 Heated Oxygen Sensors-Upstream (Gas) Fuel Heater, Glow Plug Controller, Intake Air (IA) Heater Relay, EGR System Components (Diesel) B/U LP Fuse 20A Park/Neutral Position (PNP) Switch RR DEFOG Fuse 30A DEFOG Relay HDLP-HI Relay - HI HDLP-LT Fuse, HI HDLP-RT Fuse Heated Oxygen Sensors-Downstream (Gas) O2 B Fuse (Gas)/EMCI Fuse (Diesel) #4 IAT/MAF Sensor, Engine Control Module (ECM) (Diesel) Inflatable Restraint Sensing and Diagnostic AIRBAG Fuse Module (SDM), Memory Seat Module- Passenger, Inside Rearview Mirror FRT PARK Fuse Park/Turn Signal Lamps-Front, Marker Lamps- Front DRL Relay - DRL Lamp-LT, DRL Lamp-RT (Domestic)/DRL Fuse, FRT PARK Fuse (Export) SEO IGN Fuse DEFOG Relay, Instrument Panel Cluster (IPC) TBC IGN 1 Fuse Body Control Module (BCM) HI HDLP-LT Fuse Headlamp-High Beam-Left LH HID Fuse 20A High Intensity Discharge Lamps DRL Fuse DRL Relay (Domestic)/Daytime Running Lamps (Export) RVC Fuse Generator Battery Control Module IPC/DIC Fuse Instrument Panel Cluster (IPC) HVAC/ECAS Fuse HVAC Control Module CIG LTR Fuse Cigar Lighter, Data Link Connector (DLC) HI HDLP RT Fuse Highbeam Headlamp-Right HDLP-LOW Relay - LO HDLP-LT Fuse, LO HDLP-RT Fuse A/C COMP Relay - A/C Compressor Clutch A/C COMP Fuse A/C Compressor Clutch Relay RR WPR 25A Not Used RADIO Fuse Radio, Rear Seat Audio (RSA) SEO B1 Fuse Instrument Panel Cluster (IPC), Rear Fog Lamp Relay, Overhead Console, Roof Beacon Switch LO HDLP-LT Fuse Headlamp-Low Beam-Left BTSI Fuse Stop Lamp Switch
Page 5 of 5 CRNK Fuse Powertrain Control Module (PCM)-Gas, Engine Control Module (ECM)-Diesel LO HDLP-RT Fuse 25A Headlamp-Low Beam-Right FOG LP Relay - Fog Lamp-RF, Fog Lamp-LF FOG LP Fuse FOG LP Relay HORN Relay - HORN Fuse W/S WASH Relay - Windshield Washer Fluid Pump W/S WASH Fuse W/S WASH Relay INFO Fuse Vehicle Communication Interface Module (VCIM), Rear Seat Entertainment (RSE) Assembly, Remote Playback Device-CD Player RADIO AMP Fuse 30A Audio Amplifier RH HID Fuse 20A Not Used HORN Fuse Horn-Left, Horn-Right EAP Fuse Not Used TREC Fuse 30A Transfer Case Encoder Motor, Transfer Case Shift Control Module SBA Fuse Supplemental Brake Assist (SBA)