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
1996 Cadillac Seville STSSECTION Diagnostic Procedures
- Perform On-Board Diagnostic (OBD) System Check. After performing OBD system check, go to next step.
- Using scan tool, check if DTC P1520 or P1810 is also present. If any of the DTC(s) are present, diagnose affected DTC(s) first. If DTC(s) are not present, go to next step.
- Verify if transaxle was shifted into Park or Neutral while cruise control was engaged. If transaxle was shifted out of a drive gear, causing DTC to set, go to next step. If transaxle was not shifted out of a drive gear, see DIAGNOSTIC AIDS.
- Clear DTC. Explain to vehicle operator that shifting transaxle out of a drive gear while cruise control is engaged will set DTC.
RENDER: 1.0x
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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.