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 MANUALSBUICK1972GS 5.7L ENG VIN H, NOT AVAILABLE TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSPOWER DOOR LOCKSTESTING & TROUBLE SHOOTINGALL STYLES EXC. "F" (USING TEST LAMP)DOOR LOCK CONTROL SWITCH
1972 Buick GS 5.7L Eng VIN H, Not Available Trans
Door Lock Control Switch
1972 Buick GS 5.7L Eng VIN H, Not Available TransSECTION Door Lock Control Switch
- After removing door trim panel, insert test lamp prod into feed terminal of switch block. If lamp does not light, repair open or short circuit in orange/black wire.
- Connect a jumper lead between feed and lock (or unlock) terminal. If locks operate in both cycles, renew switch.
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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.