hi
first off im new here but running out of options and i use forums for my atv and they help. i have a 2004 gmc yukon slt 5.3 with around 160,000 went to store the other day and was leaving i gassed on it hard and noticed that check engine light came on and was blinking so i took it to mechanic was reading p0300 code and running rich in bank one and bank two so..... had him to new plugs plug wires and replaced a couple of coil packs it ran worse so had another mechanic he told me maf sensor so replaced that truck runs much better but still at half throttle or full throttle i have no power and wont shift out so took it back and he told me that my icm was bad ignition control module and i didnt think my truck had one also did have b&g throttle cleaning done note also had a bad flood at work a few months back got lots of water and mud under hood it ran like crap for a few days then was fine..... i have mild things done cold air intake shorty headers a custom tune and straight dual pipes pls help i need it for work tuesday in new mexico sorry so long thanks
first off im new here but running out of options and i use forums for my atv and they help. i have a 2004 gmc yukon slt 5.3 with around 160,000 went to store the other day and was leaving i gassed on it hard and noticed that check engine light came on and was blinking so i took it to mechanic was reading p0300 code and running rich in bank one and bank two so..... had him to new plugs plug wires and replaced a couple of coil packs it ran worse so had another mechanic he told me maf sensor so replaced that truck runs much better but still at half throttle or full throttle i have no power and wont shift out so took it back and he told me that my icm was bad ignition control module and i didnt think my truck had one also did have b&g throttle cleaning done note also had a bad flood at work a few months back got lots of water and mud under hood it ran like crap for a few days then was fine..... i have mild things done cold air intake shorty headers a custom tune and straight dual pipes pls help i need it for work tuesday in new mexico sorry so long thanks