mjnulf
New member
I bought my AT4 new last year. I have had nothing but problems with it. This is my 6th GMC truck since 2019. I love the GMC product. But my current truck has been back to dealer 6 times with same problem. The truck keeps losing is connection to the items installed in truck. The information center will show messages Trailer Brake disconnected or the AC resets to 76 degrees and the auto setting and sync setting all shut off. Last month I took the back to dealer and they said that the truck showed 43 items were discounted from truck. My check engine light is back on again. I will calling dealer Monday morning to back into the dealer. This will be 7th time I had to truck back to dealer. The truck currently has 18, 444 miles on it.
