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Home >> GMC >> 2002 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 6.5L >> Repair Instructions >> Fuel Tank Draining Procedure
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Fuel Tank Draining Procedure

CAUTION: Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel fuel in an open container, due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher nearby.

To drain the fuel tank is to remove as much fuel as possible before servicing the fuel tank.

CAUTION: Refer to BATTERY DISCONNECT CAUTION .
  1. Disconnect the negative battery cables.
  2. Use a hand operated pump device to drain as much fuel as possible through the filler neck.
  3. Remove the fuel and reinstall the filler cap.