how to remove gas tank from 1999 pontiac grand am

Run the engine until the upper radiator hose starts to get hot.ĥ. Start the engine with the pressure cap off. Fill the surge tank to the base of the filler neck.Ĥ. Close the valve once a continuous stream of coolant is expelled from the valve.ģ. The coolant air bleed valve is located on the top of the thermostat bypass pipe/heater pipe assembly.

Important: On vehicles equipped with the 3.4L engine, open the coolant air bleed valve. When installing the drain plugs, use pipe sealer GM P/N 12346004 (Canadian P/N 10953480). If previously removed, install the engine block drain plugs. Remove the fasteners that hold the radiator in place and lift out the radiator.Ģ. You'll need a with a flare nut wrench for that. Replace with new ones as needed.Detach the transmission cooler lines. Check the hoses for tears, wear and they should not feel spongy with soft spots. Disconnect the fan and the fan shroud, if so equipped. Disposing of ethylene glycol antifreeze into the sewer system is both illegal and ecologically unsound.ĭisconnect the lower radiator hose and drain the rest of the radiator into a resealable container. Ethylene glycol antifreeze is a very toxic chemical.

Important: Dispose of used coolant in a proper fashion, such as in a used coolant holding tank. The radiator drain valve is located at the bottom of the radiator tank.ĥ. Use a 1/4 inch square drive or a 3/16 inch hex drive to open the radiator drain valve. After all hissing stops, continue to rotate the surge tank cap counterclockwise until the cap is removed.ģ.

Residual pressure is indicated by a hissing sound.Ģ.3. Wait until any residual pressure is relieved. Slowly rotate the surge tank cap counterclockwise about a 1/4 turn and then stop.Ģ.2. When the engine is cool, remove the surge tank cap by following these steps:Ģ.1. Drain the radiator fluid as described in the manual :' Draining ProcedureĢ. Park on a level surface, turn the ignition off and disconnect the negative battery cable. Removal of the pressure cap while the engine is hot and pressure is high will cause the solution to boil instantaneously - possibly with explosive force - spewing the solution over the engine, fenders and the person removing the cap. CAUTION: As long as there is pressure in the cooling system, the temperature can be considerably higher than the boiling temperature of the solution in the radiator without causing the solution to boil.

How to remove gas tank from 1999 pontiac grand am