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 1751 (MIRROR SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESPOWER MIRRORS INOPERATIVECIRCUIT/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 is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, observe the scan tool Mirror Select Switch parameter while cycling the mirror select switch between the left and right positions. The parameter should change between Driver and Passenger.
- If the parameter does not cycle between the specified values, replace the DDSA.
- Observe the scan tool Mirror Motors Command parameter while cycling the mirror directional switch between the up, down, left and right positions. The parameter should change between Idle, Up, Down, Left, and Right.
- If the parameter does not cycle between the specified values, replace the DDSA.
- Using the mirror directional switch operate the left and right outside mirrors to move up, down, left and right. The mirrors should move in the commanded directions.
- If a mirror does not move in all the commanded directions refer to, Mirror Motor Circuit Test.
- Operate the memory 1 and 2 recall switches. The outside rearview mirrors should adjust to the stored memory settings.
- If a mirror does not adjust to the stored memory setting refer to, Mirror Position Sensor Circuit Test.
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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.