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Home >> GMC >> 1987 >> Magnavan 6.2 J, 400/M40 >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Fuel Injection System - TBI >> Removal & Installation >> Electronic Control Module (ECM)
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Electronic Control Module (ECM)

Locate electronic control module. Disconnect battery negative cable. Disconnect electrical connectors from ECM. Remove ECM mounting hardware and ECM. To install, reverse removal procedure.

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