GMC Troubleshooting Questions? Ask a Mechanic for Answers
Hello and welcome!My name isCustomerand I can assist you with your question.
This problem is caused by a bad connection or blown fuse or fuses.
You would need to start by checking the battery itself, connections and the main or maxi fuses.
It is possible that more than one fuse has blown. You will need to check all fuses inside the vehicle as well as under the hood. I would be willing to bet you have at least a few (if not more) blown fuses.
If you give me a bit, I will locate the main fuses for you.
Depending on your set up, you will either have one or two MEGA fuses. 175 amp and or a 125 amp fuse located off of the red wire from the battery positive wire. Then the power goes to several other main fuses (60 amp, 50 and 40 amp fuses) in the underhood fuse block that power up several major components on the vehicle.
I suspect one or more of these fuses have blown due to the battery being hooked up backwards. So be sure not only to check these fuses, but also the rest of them in the underhood fuse block and inside the vehicle as replace them as needed.
Here is a wiring diagram of the power distribution on your vehicle.
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Did you have any further questions sir?
Or may I call you Derrick?
Hello! It'sCustomerfrom just answer.
I am just checking in to see if you need any further assistance?
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