Why is my check engine light on GMC Sierra?
It’s the check engine light. It could be a misfiring engine, a broken oxygen sensor or simply a loose gas cap. When you see the check engine light it doesn’t necessarily mean you need to pull the car over to the side of the road and call a tow truck. It does mean you should get the car checked out as soon as possible.
How do you turn off the check engine light on a GMC Sierra?
Disconnect the Battery You will then need to put your key into the ignition and turn it to the “on” position about three times. Ideally, this will clear the data, turning off the light. You can then reconnect the battery and turn the ignition on. After about a minute, the check engine light should be off.
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 should I do if my check engine light is still coming on?
Put the keys in your ignition and turn your ignition on and off consecutively after a second in each step. Once it is done, see if the engine check light is still coming on or not. If the check light is off, you are ready to go, but if it is still coming on, get ready by reading the codes with a scanner instead. Let it Go Off Itself
How to get diagnostic code for Toyota check engine light?
1 Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2 Turn the ignition on. 3 Follow scan tool manufacturer’s operating instructions to access the Diagnostic Trouble Codes (DTC’s).
Where is the trouble code on a GMC?
When retrieving GMC trouble codes with an OBD II scan tool, proceed as follows: 1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2. Turn the ignition on.