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Home >> Buick >> 1989 >> Skyhawk S/E, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - 2.0L/2.5L TBI >> Removal & Installation >> Electronic Control Module (ECM) R & I >> Installation
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Electronic Control Module (ECM) R & I: Installation

Install PROM and CALPAC (if equipped) in new ECM. Reinstall ECM into vehicle. Reconnect electrical connectors to ECM. Install access panels. Reconnect negative battery cable to battery.

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.
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