GMC Troubleshooting Questions? Ask a Mechanic for Answers
Hello, my name is***** and i will do my best to assist you.I am going over your story now and will reply back soon with some info,thanks!
there are a few things that can cause this. any time the transfer case kicks itself back to 2wd there will be a fault code stored, do you have access to a scanner that can read the truck? the scanner will need to be a laptop style as the handhelds can usually only read the engine module emissions codes. are you going to fix yourself or have the dealer or shop do it?