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.
1993 Chevrolet Cavalier VL, 4D WagonFACTORY OEM SERVICE PROCEDURE
Programmable Read-Only Memory (Prom): Removal
- Remove ECM from vehicle. See ELECTRONIC CONTROL MODULE (ECM) . Position ECM so bottom cover faces upward. Remove slide-off PROM access cover by depressing locking tab.
- Using PROM removal tool, grasp PROM at narrow ends. Gently rock PROM from end to end while pulling up on PROM. If replacing PROM, remove old PROM from PROM carrier. See Figure.
NOTE:
Note reference notch locations in PROM, carrier and ECM 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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