The Best 2012 Chevy Avalanche Check Engine Light Comes On And Off 2023. This can be done by unhooking both cables from the battery terminals (negative cable first) and waiting 30 seconds before reconnecting them. Web rough idle, rough shift, stabili trak, traction control and blinking engine light starting happening all at once!

Here are some helpful tips to get you started. Web the video above shows how to locate the on board diagnostics obd plug location on your 2009 avalanche, how to read the trouble codes and how to reset or clear the check engine light using a scanner on your avalanche. Read the fault codes if the light doesn’t reset within two to three days.