So i keep getting a dtc34 code with is the stepper motor timing fault and now my truck barely starts i just stumbles for about 30 seconds even plugged in. Can you guys please help. Also i only get the code at idle and do i need to get a new stepper motor or what.
95k2500hd
Have you cleaned ALL the grounds? Have you checked all the possible electrical connectors for pushed out/bent pins? Have you checked all fuses? Have you connected a scan tool to see what the timing is actually doing? The stepper motor costs $150+.I'd want to be positive that it is the problem before replacing.
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