GM 25312064 Tank Assembly, Fuel

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Unless the vehicle has been driven far enough to completely empty the tank, it's a good idea to siphon the residual fuel out before removing the tank from the vehicle. Warning: DO NOT start the siphoning action by mouth! Use a siphoning kit, available at most auto parts stores. Relieve the fuel pressure. Detach the cable from the negative terminal of the battery. Caution: On models equipped with the Theftlock audio system, be sure the lockout feature is turned off before performing any procedure which requires disconnecting the battery. Raise the vehicle and place it securely on jackstands. Locate the electrical connector for the electric fuel pump and fuel gauge sending unit in front of the tank, and unplug it. If the vehicle doesn't have a connector, remove the rubber exhaust pipe hangers to allow the exhaust to drop slightly, then remove the exhaust pipe and heat shield. On 2001 and later models, remove the plastic pushpins securing the fuel tank shield, then remove the shield. Support the fuel tank with a floor jack. Disconnect both fuel tank retaining straps. Lower the tank enough to disconnect the wires and ground strap from the fuel pump/fuel gauge sending unit, if you haven't already done so. Remove the tank from the vehicle. Installation is the reverse of removal.