Hummer H3 2007 Check Engine Light
So I bought my Hummer, Used of course, It threw a check engine light and I brought it back to the dealership. A long story short it was a cracked cylinder head. So they have replaced it after 2 and a half weeks. They test drive it and throws another check engine light???? They say it is because there is a vibration in the engine, still at shop..... Any Ideas on this one