Exhaust & Emissions
If the front tank overfills, the excess pressure may cause the front tank to expand and contact the driveshaft, possibly resulting in a hole in the tank. The hole will leak fuel, which in the presence of an ignition source, can increase the risk of a fire.
The rear fuel tank and front fuel tank work together to balance fuel levels during normal vehicle operation and filling of fuel tanks. At times, the rear fuel tank may overfill the front fuel tank because the front tank low fuel level sensor may stick. This can cause the front fuel tank to expand and contact the drive shaft, which could cause a hole to develop in the front fuel tank and result in a fire hazard.
Recall repairs on your Chevrolet or GMC truck must be performed by a General Motors dealership. General Motors will notify known owners of affected vehicles beginning in December, 2017. If you do not receive a notification, but wish to check to see if your vehicle is included, please contact one of your local General Motors dealerships. They will also check for any other incomplete recalls on your vehicle. For best results, be prepared to provide your Vehicle Identification Number (VIN) to the service department consultant you speak with. The General Motors recall number is 17399.