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thomas3767
thomas3767, Other
Category: GMC
Satisfied Customers: 1543
Experience:  I have been a automotive expert for many years
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I have a 2011 gmc sierra 1500, my altenator went screwy and

Customer Question

i have a 2011 gmc sierra 1500, my altenator went screwy and threw a lot of engine codes. I installed the new altenator erased all of the codes and everything was good except for the***** I put the new switch in the dash and still no luck. I have no indicator light on the switch.
Submitted: 1 year ago.
Category: GMC
Expert:  thomas3767 replied 1 year ago.

Have you checked all the fuses to the four wheel drive?

It is fuse #19 in fuse box under hood.

Customer: replied 1 year ago.
all the fuses are good
Expert:  thomas3767 replied 1 year ago.

Ok does the ECM have any codes in it now?

Customer: replied 1 year ago.
CO 392 is what keeps coming up as soon as i delete it comes right back up.