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 MANUALSCHEVROLET1987CAPRICE CLASSIC, 4D WAGONREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMFUEL INJECTION SYSTEM - TBIREMOVAL & INSTALLATIONELECTRONIC CONTROL MODULE (ECM)INSTALLATION
1987 Chevrolet Caprice Classic, 4D Wagon
Electronic Control Module (ECM): Installation
1987 Chevrolet Caprice Classic, 4D WagonSECTION Installation
Install old PROM in new ECM. Install ECM and connect leads. Install kick panel. Reconnect battery cable.
CAUTION:
It is possible to install a PROM backwards. If PROM is installed backwards and ignition switch is turned on, the PROM circuitry will be destroyed and replacement will be necessary.
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.