Skip the auto shop - Our mechanics make house calls

Q: The check engine light on for my 2005 Chevrolet Avalanche

asked by on

My truck has gone around 120,000 miles and the dashboard shows the check engine light illuminated. I had the gas cap reinstalled as it was loose. Also, I had oil level checked and it is fine. The operating temeprature is also okay. There are no issues with the oil pressure either. However, the check engine light is still on. What should I do?

Hey there, thanks for writing in about your 2005 Chevrolet Avalanche. If the gas cap was loose but then later taken care of, then the light may be due to another issue. You will need to have the Check Engine Light scanned for codes and cleared of codes. The gas cap code will not clear on its own without clearing it. If you need to have this taken care of for you, a local expert from YourMechanic can come to your car’s location to diagnose the Check Engine Light and resolve this issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car engine knocking, smoking, burning oil

Experiencing an engine knock is not a problem to be taken lightly. Typically when an engine begins to produce a knocking sound, it is a good indication that there is some sort of internal engine damage already going on. This,...

Q: Door locks on and off on and speedometer dial fluctuates

I would question the diagnosis for the dealer to show you the reason to get the cable replaced and why the cable is so expensive. Have them break down the parts and labor in the quote. I show about an...

Q: Won't change into 2nd gear

Hey there. Assuming you replaced the transmission with the same transmission model as original (4L60E), the problem you describe is most likely a problem with the throttle position sensor (which communicates to the transmission controller), or the 2nd gear "apply"...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...