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 MANUALSBUICK1998RIVIERAREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEBODY, CAB CONTROL SYSTEMSBODY CONTROL MODULETROUBLE SHOOTINGPRELIMINARY CHECKS
1998 Buick Riviera
Preliminary Checks
1998 Buick RivieraSECTION Preliminary Checks
- Check PWR DR LK fuse (15- or 20-amp) and INT LP (20-amp) fuse in RH rear junction block. See WIRING DIAGRAMS .
- Check for poor terminal contacts at component and harness connectors.
- Check for proper installation of aftermarket electronic equipment which may affect other systems.
- Check for broken or partially broken wire inside insulation which could cause system malfunction but check good in continuity/voltage check.
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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.