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 687 (POWER OUTLETS)DIAGNOSTIC INFORMATION AND PROCEDURES120-VOLT POWER RECEPTACLE(S) INOPERATIVECIRCUIT/SYSTEM TESTING
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Circuit/System Testing
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Circuit/System Testing
WARNING: This page is about a different car, the 2006 GMC Sierra, 2006 GMC Cab & Chassis Sierra, 2006 Chevrolet Silverado, and 2006 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
Always perform the Energy Storage Box (ESB) Service Disconnect/Connect (5.3L Engine w/RPO HP2)
before diagnosing or servicing any PHT systems.
- With the ignition OFF, Isolate the APO circuit that is inoperative by disconnecting the 120-volt harness (orange) from the energy storage box (ESB) and the SGCM.
- With a DMM, independently test the APO phase A (hot) and the APO neutral circuits for an open. Also, test the same circuits for a short between each other. Refer to Cigar Lighter/Auxiliary Outlets Schematics .
- Test the APO ground circuits for any shorts. As the circuits are normally open.
- If a defective circuit is found, repair as necessary.
- If no trouble found with the APO circuits, replace the appropriate APO receptacles.
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.