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 MANUALSCHEVROLET1999CHEVY EXPRESS G1500, VAN CARGO, 5.7 RREPAIR AND DIAGNOSISBODY & FRAMEMIRRORSPOWER MIRROR SYSTEMSYSTEM TESTSEXPRESS & SAVANABOTH POWER MIRRORS INOPERATIVE
1999 Chevrolet Chevy Express G1500, Van Cargo, 5.7 R
Both Power Mirrors Inoperative
1999 Chevrolet Chevy Express G1500, Van Cargo, 5.7 RSECTION Both Power Mirrors Inoperative
- Check CTSY fuse (20-amp) in instrument panel fuse block, in left lower kick panel. If fuse is okay, go to next step. If fuse is blown, check Orange wire between CTSY fuse terminal and power mirror switch connector terminal "E" for a short. See WIRING DIAGRAMS . Repair as necessary and retest system.
- Disconnect power mirror switch harness connector. Connect test light between power mirror switch harness connector terminal "E" (Orange wire) and ground. See Fig 1 . If test light illuminates, go to next step. If test light does not illuminate, repair open in Orange wire between power mirror switch and instrument panel fuse block. See WIRING DIAGRAMS .
- Connect test light between power mirror switch harness connector terminal "D" (Black wire) and battery voltage. See Fig 1 . If test light illuminates, check for poor connection at power mirror switch. If connection is okay, replace power mirror switch. If test light does not illuminate, repair poor connection or open in Black wire between power mirror switch connector terminal "D" and ground, behind left-side kick panel. See WIRING DIAGRAMS .
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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.