Removal of gas tank - 2000 GMC Sierra

Fuel Tank Assembly Removal & Installation Single Tank To Remove:

1. Before servicing the vehicle refer to the precautions at the beginning of this section
2. Relieve fuel system pressure (See: Fuel System Relieving)
3. Disconnect the negative battery cable
4. Raise and support the vehicle
5. Drain the fuel tank in an approved container
6. Remove or disconnect the following:
   • evaporative emission (EVAP) canister Disconnect fuel lines for single tank
     
     
   • Chassis fuel lines (B) at the fuel tank (A)
     1. Cap the fuel and EVAP lines to prevent possible fuel system contamination
     Disconnect EVAP vent line
     
     
   • EVAP vent line at the fuel tank clip (E) Disconnect vent hose and filler hose
     
     
   • Vent hose and filler hose clamp (D, B)
   • Vent hose and filler hose from the line
   Fuel tank removal
   
   
7. With the aid of an assistant or a suitable jack support the fuel tank
8. Remove or disconnect the following:
   • Fuel tank strap attaching bolts
   • Fuel tank straps
9. Carefully lower the rear of the fuel tank slightly
10. Remove or disconnect the following:
    • Fuel sender cover Fuel tank connections
      
      
    • Fuel sender and the fuel pressure sensor electrical connectors
    • Fuel tank
11. Place the fuel tank in a suitable work area Fuel lines at the tank
    
    
12. Remove or disconnect the following:
    • Fuel feed and return lines (C) from the fuel sender and the retaining clips
    • Fuel pump assembly from the fuel tank
    • EVAP line from the fuel tank roll over valves (B, D) and the retaining clips (A)
    • Fuel fill hose and the vent hose from the fuel tank
    • Fuel tank

1. Install or connect the following:
   • EVAP line to the fuel tank roll over valves and the retaining clips
   • Fuel pump assembly to the fuel tank
   • Fuel feed and return lines to the fuel sender and the retaining clips
   • Fuel fill hose and the vent hose to the fuel tank; torque hose clamps,
     1. Torque to: 22 lb-in. (2.5 Nm)
2. With the aid of an assistant or a suitable jack support and partially raise the fuel tank front end first
3. Install or connect the following:
   • Fuel sender and the fuel pressure sensor electrical connectors
   • Fuel sender cover
4. Fully raise the fuel tank
5. Install or connect the following:
   • Fuel tank straps
   • Install the fuel tank strap attaching bolts;
     1. Torque to 30 lb-ft. (40 Nm)
   • Fuel fill hose and the vent hose to the lines;
     1. Torque hose clamp to 22 lb-in. (2.5 Nm)
6. Torque the vent hose clamp,
   • Torque to: 22 lb-in. (2.5 Nm)
7. Connect the EVAP vent line to the fuel tank clip
8. Remove the caps from the fuel and EVAP lines
9. Install or connect the following:
   • chassis fuel lines at the fuel tank
   • EVAP canister
10. Lower the vehicle to the ground
11. Fill the fuel tank with clean fuel
12. Install the fuel filler cap
13. Connect the negative battery cable
14. Use the following procedure to inspect for leaks:
    • Turn the ignition on for two seconds
    • Turn the ignition off for 10 seconds
    • Turn the ignition on
    • Inspect for fuel leaks
15. Install the engine sight shield
16. Road test the vehicle to check performance

To remove the gas tank on this vehicle, first step is to undo the ground ******** the filler neck and also remove the three bolts that hold the gas tank filler neck to the box, 2 you will have to support the tank with a jack or something that will allow you to bring the tank down. 3 undo the gas tank straps so that the tank can be lowered then disconnect the connections to the fuel pump sending unit. once these steps are completed then you can drop the tank and perform what ever service you need to do.