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 MANUALSCADILLAC1993DEVILLE BASE, 4D SEDANREPAIR AND DIAGNOSISELECTRICALCHARGING SYSTEMSALTERNATOR & REGULATORSELF-DIAGNOSTICSSNAPSHOTENTERING PCM CODE SNAPSHOT
1993 Cadillac DeVille Base, 4D Sedan
Entering PCM Code Snapshot
1993 Cadillac DeVille Base, 4D SedanSECTION Entering PCM Code Snapshot
- To enter into PCM code snapshot mode, a .7.0 must first be displayed on the FDC. Refer to both ENTERING SELF-DIAGNOSTICS and DISPLAYING TROUBLE CODES .
- With .7.0 displayed on FDC display, press and release LO button on ECC. This will switch display from .7.0 to E.9.0. With E.9.0 displayed, press ECON and WARMER buttons on ECC. Display will now enter PCM code snapshot, and displayed codes will be prefixed by letter "L".
RENDER: 1.0x
NO RELATED
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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.