Thread: 2001 GMC Yukon Poor Mileage
View Single Post
Old 04-19-2010, 09:32 AM   #2
maxwedge
A990 racer
 
Join Date: Mar 2002
Location: Chestertown, New York
Posts: 17,048
Thanks: 26
Thanked 383 Times in 374 Posts
Re: 2001 GMC Yukon Poor Mileage
You could do a full scan and look at fuel trim readings to see if the engine is running rich.
__________________
maxwedge is offline   Reply With Quote