Removal Procedure
Refer to Gasoline/Gasoline Vapors Warning .
Always wear safety goggles when working with fuel in order to protect the eyes from fuel splash.
- Turn the ignition OFF.
- Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
- Relieve the fuel system pressure. Refer to Fuel Pressure Relief .
- Drain the fuel tank. Refer to Fuel Tank Draining .
- Remove the propeller shaft. Refer to Propeller Shaft Replacement .
- Remove the exhaust system. Refer to Exhaust Muffler Replacement (Single) , Exhaust Muffler Replacement (LFX)
- Remove the rear wheelhouse panel liner. Refer to Rear Wheelhouse Panel Liner Replacement .
- Disconnect the fuel tank fuel pump module wiring harness (2).
- Unclip the fuel tank module wiring harness from the chassis (1).
- Disconnect the fuel tank filler vent pipe from the fuel tank filler vent pipe (3). Refer to Plastic Collar Quick Connect Fitting Service .
- Disconnect the fuel tank filler tube (2) from the fuel tank.
- Disconnect the evaporative emission purge and fuel feed pipes (1). Refer to Plastic Collar Quick Connect Fitting Service .
- Disconnect the fuel pressure sensor harness connector (2).
- Disconnect the wiring harness connector from the fuel pipe.
- Position a suitable hydraulic lift below the fuel tank.
- Remove both fuel tank strap fasteners (3).
- Remove both fuel tank straps (2) from the fuel tank (1).
- With the aid of an assistant, lower the hydraulic lift to remove the fuel tank from the vehicle.
- Remove the fuel tank from the hydraulic lift.
Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.
For Vehicles equipped with OnStar® (UE1) with Back Up Battery:
The Back Up Battery is a redundant power supply to allow limited OnStar® functionality in the event of a main vehicle battery power disruption to the VCIM (OnStar®module). Do not disconnect the main vehicle battery or remove the OnStar® fuse with the ignition key in any position other than OFF. Retained accessory power (RAP) should be allowed to time out or be disabled (simply opening the driver door should disable RAP) before disconnecting power. Disconnecting power to the OnStar® module in any way while the ignition is On or with RAP activated may cause activation of the OnStar® Back-Up Battery (BUB) system and will discharge and permanently damage the back-up battery. Once the Back-Up Battery is activated it will stay on until it has completely discharged. The BUB is not rechargeable and once activated the BUB must be replaced.
Do not breathe the air through the EVAP component tubes or hoses. The fuel vapors inside the EVAP components may cause personal injury.
To help avoid personal injury, always use jack stands when you are working on or under any vehicle that is supported only by a jack.
When you are jacking or lifting a vehicle at the frame side rails or other prescribed lift points, be certain that the lift pads do not contact the catalytic converter, the brake pipes or the fuel lines. If such contact occurs, vehicle damage or unsatisfactory vehicle performance may result.
carefully maneuver the fuel tank past the exhaust system.