I doubt it is the PCM but more likely the ignition module. also what all have you checked out on the system? thre is a chance you plew a fuse etc since the PCM has i think 3 of them .
1993 Chevy Truck half ton ecm
Anyone know how to tell if the ecm is bad? I have tried the atob thing and it doesn't show any lights or codes...all fuses are good. Fuel pump and ignition system all don't work....it died while driving.
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