Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
Resources for the Repair and Maintenance of your 2009 GMC Envoy
2009 GMC Envoy
2009 GMC Envoy Problems
Electrical power may be lost to the interior of the vehicle due to a blown 125 amp fuse located at the under hood fuse box. This fuse can blow if jumper cables are connected incorrectly. Replacing the blown fuse will commonly correct this problem.
GM recommends replacing the engine coolant at 100,000 miles; however, our technicians tell us that the coolant may become contaminated and require a complete cooling system flush every 60,000 to 70,000 miles.
Our technicians highly recommend that the transmission is serviced every 30,000 miles to avoid problems and maintain optimal operating order.
Brake fluid can become dirty and may cause problems in the brake system; it should be flushed every 60,000 miles.
2009 GMC Envoy Questions and Answers
i can not find the oil filter need to change i
I have two warning lights that suddenly came on in the ENVOY I'm driving. The first, looks like a fuel gauge, the second is a check engine light. What could it be? It is a 2009 model.