Engine Performance problem
1999 GMC Yukon V8 Two Wheel Drive Automatic 100000 miles
1999 GMC Yukon 5.7 2wd auto. The truck starts and runs fine for about the 30 minutes, then starts to stall / bog when trying to accelerate. The more it is driven and the more heat generated (hot days, running AC) the worse it gets. Eventually it will not be able to accelerate above an idle.
I feel that this is heat related because the longer it's driven, the less usable throttle you have. You can pull over and sit for 5 minutes and get about 5% throttle back.
I have put a code reader on it, and there are none. The service engine light never comes on. Fuel pump and filter are less than 6 months old.
have the same problem?
Tuesday, September 2nd, 2008 AT 1:25 PM