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

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

RepairPal Verified
Average mileage: 126,333 (99,000–160,000)
11 model years affected: 2000, 2001, 2002, 2003, more2004, 2005, 2006, 2007, 2008, 2009, 2010
15 people reported this problem
4 people shared problem details
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!
Related Items:
Gas tank is pressurized when refueling. Have replaced gas caps with auto store and oem. Replace...
One or both secondary air injection check valves may become restricted causing poor air flow re...
The check engine light comes on along with the engine skipping or cutting back on hills. How...
Check engine soon light just came on. Vehicle passed emmisions testing last month. Disconnected...
The daytime running lights are prone to burning out. Our technicians tell us that the light s...

Related Content