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?

A: Hey there, thanks for writing in about your...

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: I have a 2011 Mitsubishi Galant and have oil leaking from my oil pan drain plug. Changed the plug but it is still leaking.

Hey there. You did not mention the engine you have but most oil drain plugs have a washer that goes on first before the plug is put in. If the washer is not installed or is over tightened then it...

Q: The dash instrument cluster keeps dropping out.

Hi there. Check the ground wires to the instrument cluster and see if the wires are loose. A loose ground will cause the instrument panel to shut on and off all the time. Also, check the battery cables and make...

Q: Hi there, I have a Chevy blazer ZR2 and replaced my Sunroof. Now when it rains, water comes in from the top near the passenger back seat.

Hi there. Check the seal to the sunroof and see if its torn or damaged. Also, check the sunroof and make sure that its mounted properly on the track. The sunroof could be out of alignment causing the water to...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...