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.
Diagnostic Procedures
1997 Cadillac Seville SLSSECTION Diagnostic Procedures
- Turn ignition off. Connect scan tool to Data Link Connector (DLC). Disconnect left seat switch (Eldorado and Seville only) or left lumbar switch. Using scan tool, clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES (DTCS) under SELF-DIAGNOSTICS. After 30 seconds, check for DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES (DTCS) under SELF-DIAGNOSTICS. If DTC is reset, go to next step. If DTC is not reset, go tostep 3).
- Repair short to ground in appropriate wire. See appropriate table under DIAGNOSTIC TROUBLE CODES (DTCS) under SELF-DIAGNOSTICS. See WIRING DIAGRAMS . Go to step 4).
- Replace left seat switch (Eldorado and Seville) or left lumbar switch. See appropriate SEATS - POWER article. Recheck system operation.
- Clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES (DTCS) under SELF-DIAGNOSTICS. Reinstall and reconnect all components and connectors. Recheck system operation.
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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.