Check Engine Light Due to Gas Cap Issue on Hummer H2

A Loose or worn gas cap may cause Check Engine Light to illuminate.

RepairPal Verified
Average mileage: 91,064 (30,000–124,000)
7 model years affected: 2003, 2004, 2005, 2006, more2007, 2008, 2009
17 people reported this problem
6 people shared problem details
2006 Hummer H270,450
Tighten feul cap warning.. replaced cap. Lasted 4 days then started again and now I have an engine light on.. gotta take it in to have it checked.
2003 Hummer H2120,000
shop said to get a new gas cap. mine cap cover just snaped off one day. so i got out the super glue. but now the cap will not click when i try to tighten it. so know i will buy a new one.
2003 Hummer H2102,000
Check engine light went on after awhile and not only was realized that putting in gas and attendant did not seal correcty.
2005 Hummer H287,000
still does it...and dealer won't fix
2004 Hummer H2104,000
the service garage said it was rust on filler neck ,they sanded it and it still happened. I discovered that the cap always felt loose and decided to replace it, in doing so , I found out that part of the rubber on the cap was missing . I hope this fixes the problem !
2004 Hummer H2124,000
this is a very common problem replaced 2 gas caps due to engine light also 2 times on my 2500 series
Related Items:
Check engine light came on after truck misfired and stalled after fueling.
One or both secondary air injection check valves may become restricted causing poor air flow re...
gas gage goes pass full line and abs light comes on and air comes out of my air suspension
I had the front driver side hub assembly replaced recently and since then my ABS, Brake, and Tr...

Related Content