GMC
Yukon XL 1500
18

Check Engine Light Due to Gas Cap Issue on GMC Yukon XL 1500

Problem Description and Possible Solution

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

Problem Data
RepairPal Verified
Average mileage: 118,891 (99,000–160,000)
11 model years affected: 2000, 2001, 2002, 2003, more2004, 2005, 2006, 2007, 2008, 2009, 2010
18 people reported this problem
Comments
Viewing 1 - 4 of 4 comments
GOT A NEW CAP FOR GAS TANK, ISSUE REMAINS
LOOSE GAS CAP LIGHT COMES ON OFTEN, I CHECK IT AND IT'S TIGHT, SO FIGURE THAT THE GAS CAP IN JUST WORN.
Never fixed. Light stays on. I just ignore it.
Engine light code indicated loose gas cap - replace. I have replaced it 3 times parts store caps and oem caps. Still get light about every 6 months. When I open gas cap, gas tank is pressurized!