John Mcrae

I'm in the same boat as you. Same code and the first parts they changed were the lifters, only had 1600 miles on it. Now it's back in the shop and they don't know what the problem is. Just throwing parts at it. Very dissatisfied with the product and dealership won't swap it for a new one without paying at least 5000.00 more. Are you kidding me. May have to shame this dealer into a deal that works for me.

I purchased my AT4 in July 2021 and the check engine light has come on at least 5 different times since I have owned it. GM has replaced the lifters already but that wasn't the problem. It is back in the shop and I think they are just throwing parts at it to try and make it go away. The code is PO300. So it can be any number of things. I tried to talk to the GM at the dealer about swapping it out and no way that was gonna happen unless I pay alot more money. I already paid $5000.00 over MSRP. Now they want another $5000.00. Are you kidding me ? If you go with the lemon law you just get your money back. I think GM should allow me to do an even trade with no more money involved. This truck only has 1850 miles on it. Hopefully this doesn't fall on deaf ears and I get some assistance from someone. John from Ocala, Fl