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

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 1993 Chevrolet Caprice, 1992 Oldsmobile Custom Cruiser, 1992 Chevrolet Caprice, 1992 Buick Roadmaster, and 1991 Oldsmobile Custom Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

Isolates a power door lock system fault or a keyless entry system fault.
Checks for battery voltage at keyless entry receiver.
Checks for ground at keyless entry receiver.

Fig 1: Keyless Entry System Inoperative; Schematic

Courtesy of GENERAL MOTORS CORP.

Factory Service Tools

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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.