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 MANUALSPONTIAC19906000 LE, 4D SEDAN, 2.5 RREPAIR AND DIAGNOSISBODY & FRAMEPOWER WINDOWSTESTINGMASTER CONTROL SWITCH
1990 Pontiac 6000 LE, 4D Sedan, 2.5 R
Master Control Switch
1990 Pontiac 6000 LE, 4D Sedan, 2.5 RSECTION Master Control Switch
Check for power at Pink wire. All other wires should have continuity to ground when switch is in rest position. Check for clean and tight ground connection.
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.