Dear G. M Rep,
I have a 2003 Avalanche that does reduced engine power which will only let vehicle go about 20mph. I have had it in and out of TeamOne in Charlotte, MI not once has problem been fixed, I have fixed all things they think could be going wrong. I have been trying to fix this since Feb. They have year warranty I'm at the end of what I can do with this vehicle it's not reliable I can't take on highway ect… Please please help. Joy Haney