Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2008 Chevrolet Chevy Express G2500, Van Cargo Extended, 6.0 KFACTORY OEM SERVICE PROCEDURE
Fuse Block - Underhood Label
Fuse Block - Underhood - Label Usage
| No. | Device | Rating | Description |
|---|---|---|---|
| 1 | LT HI BEAM Fuse | 10A | Headlamp-High Beam-Left (Composite) or Headlamp-Left (Sealed) |
| 2 | FUEL PUMP Fuse | 20A | Fuel Pump and Sender Assembly (4.3L, 4.8L, 6.0L) or Fuel Pump (6.6L) |
| 3 | EMPTY | - | Not Used |
| 4 | FUEL HTR (D) Fuse | 15A | Fuel Heater (6.6L) |
| 5 | RT HI BEAM Fuse | 10A | Headlamp-High Beam-Right (Composite) or Headlamp-Right (Sealed) |
| 6 | EMPTY | - | Not Used |
| 7 | LT LO BEAM Fuse | 10A | Headlamp-Low Beam-Left (Composite) or Headlamp-Left (Sealed) |
| 8 | RT STP/TRN TRLR Fuse | 15A | Trailer Connector |
| 9 | RT LO BEAM Fuse | 10A | Headlamp-Low Beam-Right (Composite) or Headlamp-Right (Sealed) |
| 10 | DRL 2 Fuse | 10A | LT LO BEAM fuse and Headlamp-Left (Sealed) |
| 11 | FCSM IGN (G) Fuse | 10A | Fuel System Control Module (5.3L) |
| 12 | DRL 1 Fuse | 15A | LT LO BEAM fuse and Headlamp-Low Beam-Left (Composite) |
| 13 | AUX STOP LAMP Fuse | 15A | X405 (Cutaway) |
| 14 | FOH MDL (D) Fuse | 15A | Coolant Heater (6.6L) |
| 15 | FCSM BATT (G) Fuse | 20A | Fuel System Control Module (5.3L) |
| 16 | LT STP/TRN TRLR Fuse | 15A | Trailer Connector |
| 17 | CNSTR VENT SOL (G) Fuse | 10A | Evaporative Emission (EVAP) Canister Vent Solenoid Valve (Gas) |
| 18 | EMPTY | - | Not Used |
| 19 | EMPTY | - | Not Used |
| 20 | BCM 1 Fuse | 10A | Body Control Module |
| 21 | SEO Fuse | 10A | Instrument Panel Cluster (8S8) |
| 22 | BCM 4 Fuse | 15A | Body Control Module |
| 23 | BCM 6 Fuse | 15A | Body Control Module |
| 24 | EMPTY | - | Not Used |
| 25 | BCM 7 Fuse | 10A | Body Control Module |
| 26 | BCM 3 Fuse | 15A | Body Control Module |
| 27 | BCM 5 Fuse | 15A | Body Control Module |
| 28 | EMPTY | - | Not Used |
| 29 | EMPTY | - | Not Used |
| 30 | IP CLSTR Fuse | 10A | Instrument Panel Cluster |
| 31 | EMPTY | - | Not Used |
| 32 | BRK SW Fuse | 10A | Stop Lamp Switch |
| 33 | AUX PWR OUTLET Fuse | 20A | Auxiliary Power Outlet 2 |
| 34 | AIRBAG Fuse | 10A | Inflatable Restraint Sensing and Diagnostic Module, Inflatable Restraint I/P Module Disable Switch (C99) or Inflatable Restraint PASSENGER AIR BAG ON/OFF Indicator (-C99) |
| 35 | TRLR WRG Fuse | 30A | Blunt Cut (UY7) |
| 36 | STR/WHL SNSR (G) Fuse | 10A | Steering Wheel Speed/Position Sensor (JL4) |
| 37 | BCM 2 Fuse | 10A | Body Control Module |
| 38 | LTR/DLC Fuse | 20A | Cigar Lighter (DT4), Auxillary Power Outlet 1 (-DT4) and Data Link Connector (DLC) |
| 39 | WPR Fuse | 25A | WPR Relay |
| 40 | EMPTY | - | Not Used |
| 41 | WSW Fuse | 15A | Windshield Washer Fluid Pump |
| 42 | EMPTY | - | Not Used |
| 43 | HORN Fuse | 20A | Horn Assembly |
| 44 | TCM BATT Fuse | 10A | Transmission Control Module |
| 45 | EMPTY | - | Not Used |
| 46 | O2 SNSR 1 (G) Fuse | 10A | HO2S Bank 1 Sensor 1 (Gas) and HO2S Bank 2 Sensor 1 (Gas) |
| 47 | TCM IGN Fuse | 15A | Transmission Control Module |
| 48 | ECM IGN Fuse | 15A | Engine Control Module |
| 49 | MAF/CNSTR VENT Fuse | 15A | Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor and Evaporative Emission (EVAP) Canister Purge Solenoid Valve (Gas) |
| 50 | ECM PWR/TRN Fuse | 10A | Engine Control Module |
| 51 | TRANS Fuse | 15A | Automatic Transmission |
| 52 | EVEN IGN/INJ (G) Fuse | 20A | Even Ignition Coils (4.8L, 5.3L, 6.0L) and Even Fuel Injector (4.8L, 5.3L, 6.0L) |
| 53 | GLOW PLUG MDL (D) Fuse | 10A | Glow Plug Control Module (GPCM) (6.6L) |
| 54 | ECM BATT (G) Fuse | 10A | Engine Control Module |
| 55 | ODD IGN/INJ (G) Fuse | 20A | Odd Ignition Coils (4.8L, 5.3L, 6.0L), Ignition Control Module (4.3L) and Odd Fuel Injectors (4.8L, 5.3L, 6.0L) |
| 56 | O2 SNSR 2 (G) Fuse | 10A | HO2S Bank 1 Sensor 2 (Gas) and HO2S Bank 2 Sensor 2 (Gas) |
| 57 | A/C CMPRSR Fuse | 15A | A/C Compressor Clutch (C60) |
| 58 | FAN CLTCH (D) Fuse | 10A | FAN CLTCH Relay (D) (6.6L) |
| 59 | V6 FUEL INJ (G) Fuse | 15A | Fuel Injectors (4.3L) |
| 60 | ABS MDL Fuse | 40A | Electronic Brake Control Module (EBCM) |
| 61 | ABS MTR Fuse | 60A | Electronic Brake Control Module (EBCM) |
| 62 | TRLR WRG Fuse | 30A | Trailer Connector |
| 63 | SPARE Fuse | - | Not Used |
| 64 | STRTR SOL Fuse | 40A | Starter Motor |
| 65 | ECM PWR/TRN (D) Fuse | 30A | Engine Control Module (6.6L) |
| 66 | FRT BLWR Fuse | 40A | Blower Motor Resistor Assembly |
| 67 | SPARE Fuse | - | Not Used |
| 68 | SPARE Relay | - | Not Used |
| 69 | RUN/CRNK Relay | - | FCSM IGN (5.3L), IP CLSTR, TRANS, BRK SW, TCM IGN, ECM IGN, AIR BAG, STR/WHL SNSR (G), STRTR SOL Fuses |
| 70 | WPR - HI Relay | - | Windshield Wiper Motor |
| 71 | WPR Relay | - | WPR - HI Relay and Windshield Wiper Motor |
| 72 | FUEL PUMP Relay | - | FUEL PUMP Fuse |
| 73 | CRNK Relay | - | STRTR SOL Fuse |
| 74 | A/C CMPRSR Relay | - | A/C CMPRSR Fuse |
| 75 | FAN CLTCH (D) Relay | - | Cooling Fan (6.6L) and Engine Control Module (6.6L) |
| 76 | PWR/TRN Relay | - | GLOW PLUG MDL (D), FUEL HTR (D), O2 SNSR 1 (G), O2 SNSR 2 (G), ECM PWR/TRN, MAF/CNSTR VENT, V6 FUEL INJ (G), EVEN IGN/INJ (G), ODD IGN/INJ (G), ECM PWR/TRN (D) and FAN CLTCH (D) Fuses |
|
IMPORTANT:
Relays listed below are non-serviceable Printed Circuit Board (PCB) relays and are internal to the block.
|
|||
| - | HIGH BEAM PCB Relay | - | LT HIGH BEAM and RT HIGH BEAM Fuses |
| - | LOW BEAM PCB Relay | - | LT LO BEAM and RT LO BEAM Fuses |
| - | DRL PCB Relay | - | DRL 1 and DRL 2 Fuses |
| - | TRAILER LH STOP/TURN PCB Relay | - | LT STP/TRN TRLR Fuse |
| - | TRAILER RH STOP/TURN PCB Relay | - | RT STP/TRN TRLR Fuse |
| - | WASHER PCB Relay | - | WSW Fuse |
| - | HORN PCB Relay | - | HORN Fuse |
| - | STOP LAMPS PCB Relay | - | AUX STOP LAMP Fuse |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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