Removal Procedure
- When major components are removed from the vehicle and the vehicle is supported by a hoist, support the vehicle with jack stands at the opposite end from which the components are being removed and strap the vehicle to the hoist.
- When performing work in the engine compartment or under the vehicle, ensure that the hood is fully open, or opened to its secondary latch. When the hood is opened to the secondary latch, the vehicle will disable the remote start features from the key fob and OnStar mobile app. Failure to open the hood, or open the hood to the secondary latch while doing a repair in the engine compartment or under the vehicle can result in inadvertent vehicle starting which could result in personal injury or damage to a vehicle.
- Relieve the system fuel pressure. Refer to Fuel Pressure Relief
- Drain the fuel tank. Refer to Fuel Tank Draining .
- Remove the left and right side rear air deflectors. Refer to Underbody Rear Air Deflector Replacement - Left Side (CTS) , and Underbody Rear Air Deflector Replacement - Right Side (CTS) .
- Remove the two piece propeller shaft. Refer to Two-Piece Propeller Shaft Replacement (LT4, LTG) .
- Remove the left rear suspension bracket. Rear Suspension Bracket Replacement (Front)Rear Suspension Bracket Replacement (Rear)
Disconnect the evaporative emission and fuel pipes (2). Refer to Plastic Collar Quick Connect Fitting Service .
- Disconnect the fuel tank electrical connector.
Support the fuel tank with a suitable jack.
- Remove the fuel tank strap bolts (1).
- Remove the fuel tank straps (2).
Remove the fuel tank (1).
- Remove the following components if replacing just the fuel tank.
- Fuel tank fuel pump module. Refer to Fuel Tank Fuel Pump Module Replacement .
- Transfer components as necessary.
WARNING:
To avoid any vehicle damage, serious personal injury or death:
WARNING:
Refer to Diesel/Gasoline Vapors Warning .
WARNING:
Refer to Safety Glasses Warning .