This flashing light should not be ignored. P1164 ho2s bank 2 sensor 3 rich or high voltage read our article on oxygen sensor codes for help with this gmc check engine light code.

Check Engine Light 2019 2020 Silverado Sierra Troubleshooting Gm Trucks Com

P1170 bank to bank fuel trim offset.

Gmc check engine light. Turn the ignition to the ii position the on position but do not try to crank the engine. When your engine is misfiring it is dumping raw fuel into the exhaust. Check engine light click for more.

Stability control indicator click for more. Most of the time that serious problem is a misfire. Stability control off indicator click for more.

Forward alert indicator click for more. Locate the open obd port to the left of the fuse panel in the driver s side foot well. Plug the obd scan tool into the open port.

It is not recommended to drive if the check engine light is flashing. With a check engine light on you need to find out what caused it. Tire pressure monitor indicator click for more.

If your vehicle s oxygen sensor is faulty it may trigger the check engine to come on. A diagnostic test can determine if the spark plugs are the reason the check engine warning light has come on. P1165 ho2s cross counts bank 2 sensor 2 read our article on oxygen sensor codes for help with this gmc trouble code.

Traction control indicator click for more. Our cardinale gmc service technicians can replace your spark plugs and reset your vehicle s computer. Press erase on the scan tool to erase all computer codes and reset the check engine light.

A check engine light going on and off intermittently signals an engine misfire causing damage to the catalytic converter and other engine components. Anti lock brake system fault indicator click for more. A flashing check engine light is your gmc sierra s way of saying i have a serious problem don t ignore me.

What to do when the gmc check engine light comes on.