Do you smell that?
Um hello, well i am a new member to this forum. Im still getting the hold of things here but not with my truck. The story is i got my truck 6 months ago, fell in love with her but ever since she had problems. She still hasent cost me any out of pocket money because im still in warranty just time dealing with all of this. One day i was driving home in the dark i was coming up to a red light so i put my truck in neutral and the lights dimmed, as a natural reaction i look at my RPM gauge and notice that the needle dropped to 500 revs almost to the point where i feel i have to give it gas because i feel its going to stall. I took it to GM dealer ship to get diagnosis and i found out there was a recall for bad cylinder heads. Of course it was a bad cylinder head, cylinder number 3 pressure was 50% it got fixed, got my truck and was pleased. Next it does the same thing, rough idle 500 revs sometimes it jumps almost as its going to stall but it doesnt let it happen. It only happens when im moving and i put my truck in neutral just for the weight of the truck to push me to the stop ahead. When im staying still in neutral it idles fine around 800 or 700 revs. Also when the truck warms up it runs perfectly fine this problem only occurs when my truck is still trying to warm up or do semi hard turns. I want some ideas of what it might be i think its a vaccum leak. but the guys at the dealership are stubborn that they only work on a certain part of the engine, no full diagnosis. This should of been on the beggining but i own a 06 GMC Canyon manuel 2.8 inline 4, Help Me so i can go to the dealership to give these guys a hard time and get my truck fixed and get her runnign flawlesly.