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does ecm control fuel pump and alternator and injector pump... because seems like the three are confused ,,, they work properly then not then do then not.
I have been trying to replace the ac/heater actuator in my 2003 GMC duramax, but I can not get the pins lined up correctly.
when run for a while it stop backing up
my 4wd not work I drive in 2wd only I have try to fix it but no success I replace the dash switch still no 4wd only 2wd and I can hear the transfer switch shift and the 4wd light will only flash the 2...
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