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.
1993 Buick Roadmaster BaseFACTORY OEM SERVICE PROCEDURE
Test Description
- Operating door lock switches will isolate transmitter/receiver problem.
- Checks for unlock signal at keyless entry receiver.
- Checks for voltage on circuit No. 694. Voltage on circuit No. 694 would prevent driver's door lock motor from locking.
- Checks that keyless entry receiver applies voltage to circuit No. 694 when an unlock request is present.
- Checks that keyless entry receiver grounds circuit No. 694 to enable a lock request.
- Checks for an open in circuits No. 295 or 694 to driver's door lock motor.
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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