What's wrong with my ECM?

Asked by Jaxon455 Apr 11, 2021 at 04:32 PM about the 1988 Chevrolet C/K 1500 Silverado LB RWD

Question type: Maintenance & Repair

ECM is not sending control voltage to fuel pump relay (green/white wire).
truck starts after turning over enough to achieve 4 psi oil pressure. starts
immediately with relay bypassed. Is ECM bad??

1 Answer

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