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.
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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1794 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT VIEWS)ELECTRICAL CENTER IDENTIFICATION VIEWSFUSE BLOCK - UNDERHOOD X3
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Fuse Block - Underhood X3
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Fuse Block - Underhood X3
WARNING: This page is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
Fuse Block - Underhood X3
| Pin | Wire | Circuit | Function |
|---|---|---|---|
| 1 | 0.8 PK/BK | 5294 | Ignition 1 Voltage |
| 2 | - | - | Not Used |
| 3 | 0.35 D-BU | 473 | High Speed Cooling Fan Relay Control |
| 4 | - | - | Not Used |
| 5 | 0.35 D-GN | 335 | Low Speed Cooling Fan Relay Control |
| 6 | - | - | Not Used |
| 7 | 0.35 YE | 447 | Starter Relay Coil Control |
| 8 | - | - | Not Used |
| 9 | 5 PU | 6 | Starter Solenoid Crank Voltage (LLT) |
| 3 PU | 6 | Starter Solenoid Crank Voltage (without LLT) | |
| 10-16 | - | - | Not Used |
| 17 | 0.35 RD/WH | 1440 | Battery Positive Voltage |
| 0.5 RD/WH | 1440 | Battery Positive Voltage | |
| 18-19 | - | - | Not Used |
| 20 | 3 RD/BK | 9342 | Battery Positive Voltage (JL7) |
| 21-23 | - | - | Not Used |
| 24 | 0.75 PK | 239 | Ignition Voltage |
| 25-26 | - | - | Not Used |
| 27 | PK/BK | 5293 | Ignition 1 Voltage |
| 28-29 | - | - | Not Used |
| 30 | 0.35 BN | 7448 | Vacuum Pump Motor Relay Control (LLT) |
| 31 | 0.35 D-GN | 59 | A/C Compressor Clutch Supply Voltage |
| 32 | 0.35 D-GN/WH | 459 | A/C Compressor Clutch Relay Control |
| 33 | 0.35 GY | 5127 | Afterboil Coolant Pump Supply Voltage (LLT) |
| 34-35 | - | - | Not Used |
| 36 | 0.75 PK | 239 | Ignition Voltage |
| 37-39 | - | - | Not Used |
| 40 | 0.8 PK | 2039 | Ignition 1 Voltage (LLT) |
| 1 BN | 2039 | Ignition 1 Voltage (LC3 or LH2 without JL7) | |
| 41 | 1 PK/BK | 5290 | Ignition 1 Voltage (LLT) |
| 0.8 PK/BK | 5290 | Ignition 1 Voltage (LH2) | |
| 0.35 PK/BK | 5290 | Ignition 1 Voltage (LC3) | |
| 42 | 1 OG | 1470 | Brake Booster Pump Motor Supply Voltage (LLT) |
| 43-44 | - | - | Not Used |
| 45 | 0.35 BN | 5069 | Powertrain Relay Control |
| 46 | - | - | Not Used |
| 47 | 1 PK/BK | 5292 | Ignition 1 Voltage |
| 48-50 | - | - | Not Used |
| 51 | 1 PK/BK | 5291 | Ignition 1 Voltage |
| 52-53 | - | - | Not Used |
| 54 | 5 RD/BK | 342 | Battery Positive Voltage |
Connector Part Information
|
Terminal Part Information
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RENDER: 1.0x
NO RELATED
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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.