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 2400 (LIGHTING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESSTOP LAMPS MALFUNCTIONCIRCUIT/SYSTEM VERIFICATION
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Circuit/System Verification
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Circuit/System Verification
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, observe the scan tool Stop Lamp Relay Command parameter while pressing and releasing the brake pedal. The parameter should change between ON and OFF.
- If the parameter does not change between the commanded states, refer to the Stop Lamp Switch Malfunction below.
- Observe the left and right stop lamps while pressing and releasing the brake pedal. The stop lamps should turn ON and OFF.
- If the left or right stop lamps do not change between the selected states, refer to the Stop Lamp Malfunction below.
- Observe the center high mounted stop lamp while pressing and releasing the brake pedal. The center high mounted stop lamp should turn ON and OFF.
- If the center high mounted stop lamp does not change between the selected states, refer to Center High Mounted Stop Lamp Malfunction below.
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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.