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 MANUALSCHEVROLET1997CHEVY EXPRESS G3500, VAN CARGO, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 87 (POWER MIRROR SYSTEM)TESTINGLEFT MIRROR DOES NOT OPERATE IN LEFT/RIGHT, UP/DOWN OR ANY POSITION
1997 Chevrolet Chevy Express G3500, Van Cargo, 6.5 F
Left Mirror Does Not Operate In Left/Right, Up/Down Or Any Position
1997 Chevrolet Chevy Express G3500, Van Cargo, 6.5 FSECTION Left Mirror Does Not Operate In Left/Right, Up/Down Or Any Position
WARNING: This page is about a different car, the 1998 Oldsmobile Aurora and 1998 Buick Riviera. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect left power mirror connector. Disconnect power mirror switch connector. Using DVOM, check resistance between power mirror switch harness connector terminal "B" (White wire) and left power mirror harness connector terminal "B" (White wire). If resistance is less than one ohm, go to next step. If resistance is not less than one ohm, repair open in White wire between power mirror switch and left power mirror.
- Check resistance between power mirror switch harness connector terminal "M" (Light Blue wire) and left power mirror harness connector terminal "K" (Light Blue wire). If resistance is less than one ohm, go to next step. If resistance is not less than one ohm, repair open in Light Blue wire between power mirror switch and left power mirror.
- Check resistance between power mirror switch harness connector terminal "D" (Light Green wire) and left power mirror harness connector terminal "C" (Light Green wire). If resistance is less than one ohm, go to next step. If resistance is not less than one ohm, repair open in Light Green wire between power mirror switch and left power mirror.
- Check resistance between power mirror switch harness connector terminal "S" (Yellow wire) and left power mirror harness connector terminal "D" (Yellow wire). If resistance is less than one ohm, go to next step. If resistance is not less than one ohm, repair open in Yellow wire between power mirror switch and left power mirror.
- Reconnect power mirror switch connector. Using mirror select switch, select left mirror. Connect test light between left power mirror harness connector terminal "C" (Light Green wire) and ground. Move power mirror switch to DOWN position. If test light illuminates, go to next step. If test light does not illuminate, check power mirror switch connector terminal contact. If terminal contact is okay, replace power mirror switch. See POWER MIRROR SWITCH under REMOVAL & INSTALLATION.
- Connect test light between left power mirror harness connector terminal "B" (White wire) and ground. Move power mirror switch to RIGHT position. If test light illuminates, check left power mirror connector terminal contact, if okay replace left power mirror. See POWER MIRROR ASSEMBLY under REMOVAL & INSTALLATION. If test light does not illuminate, check power mirror switch connector terminal contact, if okay replace power mirror switch. See POWER MIRROR SWITCH under REMOVAL & INSTALLATION.
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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.