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. Fuel Pressure Relief
- Drain the fuel tank. Fuel Tank Draining
- Remove the left and right side rear air deflectors. Underbody Rear Air Deflector Replacement - Left Side (CTS-V) , and Underbody Rear Air Deflector Replacement - Right Side (CTS-V)
- Remove the two piece propeller shaft. Two-Piece Propeller Shaft Replacement (LT4, LTG)
- Remove the transmission fluid cooler pipe mid line right and mid line left. Transmission Fluid Cooler Pipe Replacement (LT4 With M5U, ATOC Jumper)Transmission Fluid Cooler Pipe Replacement (LT4 With M5U, Rear Differential Inlet Hose)Transmission Fluid Cooler Pipe Replacement (LT4 With M5U, Rear Differential Outlet Hose)Transmission Fluid Cooler Pipe Replacement (LT4 With M5U, Mid Line Left)Transmission Fluid Cooler Pipe Replacement (LT4 With M5U, Mid Line Right)
- Remove the left rear suspension bracket. Rear Suspension Bracket Replacement (Front)Rear Suspension Bracket Replacement (Rear)
Disconnect the evaporative emission and fuel pipes (2). Plastic Collar Quick Connect Fitting Service
- Loosen the hose clamps (1) and remove the filler pipe.
Support the fuel tank with a suitable jack.
- Remove the fuel tank strap bolts (1).
- Remove the fuel tank straps (2).
- Disconnect the fuel tank electrical connector.
Remove the fuel tank (1).
- Remove the following components if replacing just the fuel tank.
- Fuel tank fuel pump module. 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 .