Report: Check Engine Light Due to Gas Cap Issue
Chevrolet Colorado Problem
Average Mileage: 78,951 mi (12,000 mi - 119,653 mi)
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
Visitor, 2004 Chevrolet Colorado, 106,000 mi
fuel cap light on, and check engine light on. Replaced gas cap twice, still does it.ANNOYING!!!!
Visitor, 2004 Chevrolet Colorado, 85,500 mi
This has happened and i replaced the gas cap twice! Yes, the CEL went off BUT NOW back on, had the shop hook it up and test. It is caused by a BAD PCM! The comp. bad causing all kinds of electrical issues such as the rear light out, blinkers would work then randomly not. The heater and ac work n not work when ever it felt like it, and the CEL and gas cap notice on dash. The shop stated Colorado are known for electrical issues and it seems as if everyone is working around the issue and never actualy get the problem and it re-occurs after time and it is the PCM causing mis reads and missfires on codes and all electrical issues.
same as noted not fixed yet
Visitor, 2004 Chevrolet Colorado, 77,950 mi
The check engine light on my 2005 Chevy Colorado kept coming on. I took it to a garage and had them hook it up to their computer. they told me it was due to my gas cap.
Visitor, 2004 Chevrolet Colorado, 104,000 mi
Replaced the cap, seems to have fixed the issue... For now.
Visitor, 2004 Chevrolet Colorado, 62,487 mi
About once a week check engine light comes on, usually after filling tank. Problem still not resolved but sometimes tightening the gas cap turns the engine check light off
Visitor, 2008 Chevrolet Colorado, 55,000 mi
Engine code, replaced gas cap, and @j 60,000 engine light came back on send bad gas tank vent valve
Visitor, 2005 Chevrolet Colorado, 74,878 mi
gas cap will not tighten/seal properly.
Visitor, 2004 Chevrolet Colorado, 119,653 mi
Check engine light on constantly,low idle or replace gas cap
i had to replace cap at @ 12000 miles thought this to be a little premature