Tools Required

EN-48536  Frame Support Tool (Engine Lower 65 mm Kit)

CAUTION: Refer to Gasoline/Gasoline Vapors Caution .
CAUTION: Refer to Safety Glasses Caution .
CAUTION: Refer to Vehicle Lifting Caution .
1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Drain the fuel tank. Refer to Fuel Tank Draining .
3. Relieve the fuel system pressure. Refer to Fuel Pressure Relief (Petrol) .
4. Remove the exhaust system. Refer to Exhaust System Replacement (LY7) .
5. Remove the propeller shaft. Refer to Propeller Shaft Replacement .
6. Remove the right rear wheel. Refer to Tire and Wheel Removal and Installation .
Fig 1: Identifying Evaporative Emission (EVAP) Line
Courtesy of GENERAL MOTORS CORP.
7. Disconnect the evaporative emission (EVAP) line (1), by squeezing both sides of the line (as indicated in the illustration) and pulling it toward the rear of the vehicle.
Fig 2: Identifying Filler Hose
Courtesy of GENERAL MOTORS CORP.
8. Release the worm drive hose clamp (1) and remove the filler tube (2).
Fig 3: Identifying Fuel Feed Line & Fuel EVAP Hose
Courtesy of GENERAL MOTORS CORP.
9. Disconnect the fuel feed line (1) and evaporative emission (EVAP) line (2). Refer to Plastic Collar Quick Connect Fitting Service .
Fig 4: Identifying Fuel Tank Electrical Connector
Courtesy of GENERAL MOTORS CORP.
10. Disconnect the fuel tank electrical connector (1).
Fig 5: View Of Support Tool
Courtesy of GENERAL MOTORS CORP.
11. Support the rear frame assembly using a suitable tool.
Fig 6: Identifying Rear Frame To Chassis Retaining Bolts
Courtesy of GENERAL MOTORS CORP.
12. Remove the rear frame to chassis retaining bolts (1) and (2) and discard.
Fig 7: View Of EN-48536
Courtesy of GENERAL MOTORS CORP.
13. Support the rear frame using the bolt (1) from the EN-48536  special tool kit. Repeat for the opposite side.
Fig 8: Identifying EN-48536
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: When lowering the rear frame use care not to over extend the rear brake hoses.
14. Support the rear frame using the bolt (1) from the EN-48536  special tool kit. Repeat for the opposite side.
15. Lower the rear frame approximately 50 millimeters (2 in) (A) at the rear mounting surface between the rear frame and the chassis.
16. This will allow clearance to access the fuel tank strap bolts.
17. Remove the fuel tank heat shield. Refer to Fuel Tank Heat Shield Replacement .
18. Disconnect the park brake rear cables from the park brake front cable equalizer bracket assembly. Refer to Parking Brake Front Cable Replacement .
Fig 9: Identifying Evaporative Emission Line & Canister
Courtesy of GENERAL MOTORS CORP.
19. Disconnect the evaporative emission line (2) from the evaporative emission canister (3). Refer to Plastic Collar Quick Connect Fitting Service .
Fig 10: Identifying Fuel Tank Strap To Chassis Retaining Bolts
Courtesy of GENERAL MOTORS CORP.
20. Remove the fuel tank strap to chassis retaining bolts (1).
21. Position the fuel tank straps away from the fuel tank.
22. Carefully bend the fuel tank straps enough to allow the fuel tank to be removed.
IMPORTANT: Make sure the following are free from the surrounding components while lowering the fuel tank:
• The fuel tank wiring harness.
• The fuel hoses at the chassis pipes.
23. With the aid of an assistant, carefully lower the fuel tank from the vehicle.
24. Remove the following components if replacing just the fuel tank.
    • The primary fuel tank module - Refer to Primary Fuel Tank Module Replacement .
    • The secondary fuel tank module - Refer to Secondary Fuel Tank Module Replacement .