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.
1994 Saturn SC2 AutomaticFACTORY OEM SERVICE PROCEDURE
Programmable Read-Only Memory (Prom): Removal
- Disconnect negative battery cable. Remove ECM/PCM from vehicle. See ENGINE CONTROL MODULE (ECM)/POWERTRAIN CONTROL MODULE (PCM) . Position ECM/PCM so access cover faces upward. Remove access cover from ECM/PCM.
- Using thumb and forefinger, squeeze both ends of PROM inward (outward on some models) and pull PROM up from access hole.
NOTE:
Note reference notch locations in PROM and ECM/PCM for reassembly reference.
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.
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