Why is the Check Engine light on on my 2005 GMC Sierra?

Why is the Check Engine light on on my 2005 GMC Sierra?

The contact owns a 2005 GMC Sierra. The contact stated that the check engine light illuminated. The dealer stated that the failure was within the evaporation system and that the evaporation vent and filter needed to be changed.

Is there a problem with my 2005 GMC Sierra?

See all problems of the 2005 GMC Sierra . Tl- the contact owns a 2005 GMC Sierra. The contact stated that while driving at approximately 60 mph, the engine suddenly increased in speed to approximately 10 mph. The contact stated that the display panel read “reduced power mode” and the check engine warning light illuminated.

What are the codes for GMC check engine lights?

P1245Intake Plenum Switchover Valve P1250Early Fuel Evaporation Heater Circuit P1257Supercharger System Overboost P1258Engine Coolant Overtemperature – Protection Mode Active P1260Last Test Failed SCC Or Theft Detected, Vehicle Immobilized

What to do when your check engine light goes off?

It’s important to make sure the gas cap is tightly closed every time you fill up your vehicle with gas. However, even if you suspect the gas cap is the culprit, re-tightening the gas cap might not be enough to make the Check Engine light go off.

What causes a flashing check engine light on a GMC Sierra?

While a majority of the time, the flashing check engine light is going to be caused by a misfire related to your Sierra’s ignition system or fuel system (as stated above), there are other issues that can cause it. Your timing chain could have jumped .

See all problems of the 2005 GMC Sierra . Tl- the contact owns a 2005 GMC Sierra. The contact stated that while driving at approximately 60 mph, the engine suddenly increased in speed to approximately 10 mph. The contact stated that the display panel read “reduced power mode” and the check engine warning light illuminated.

P1245Intake Plenum Switchover Valve P1250Early Fuel Evaporation Heater Circuit P1257Supercharger System Overboost P1258Engine Coolant Overtemperature – Protection Mode Active P1260Last Test Failed SCC Or Theft Detected, Vehicle Immobilized

What to do if your check engine light is still on?

Unable to crank, return to work, return in 3 hours, reinstall old gas cap, check fluid levels, ok. Crank engine let run for 5 minutes, check engine light still on, wait one hour, crank engine back to normal check engine light off, engine run ok, drive short test drive.