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 MANUALSCHEVROLET1981STEP VAN P30, 5.7L ENG VIN M, STANDARD TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTWINDOW MOTORS & REGULATORSPOWER WINDOWS - TAILGATETESTING & TROUBLE SHOOTINGTAILGATE WINDOW WILL NOT OPEN FROM TAILGATE KEY SWITCH, OTHERWISE OPERATES
1981 Chevrolet Step Van P30, 5.7L Eng VIN M, Standard Trans
Tailgate Window Will Not Open From Tailgate Key Switch, Otherwise Operates
1981 Chevrolet Step Van P30, 5.7L Eng VIN M, Standard TransSECTION Tailgate Window Will Not Open From Tailgate Key Switch, Otherwise Operates
Open tailgate door, turn key switch to "DOWN" position and check continuity of Tan/White wire between key switch and window motor. If open, replace key switch.
NOTE:
If window will not close, place switch in "UP" position and check Lt. Blue wire. If open, replace key switch.
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.