GM 25894461 Tank Assembly, Fuel

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Remove the fuel tank filler cap to relieve fuel tank pressure. Relieve the fuel system pressure. Disconnect the cable from the negative battery terminal. Raise the rear of the vehicle and support it securely on jackstands. Remove the exhaust system. Remove the driveshaft. Drain the fuel tank. On 2007 and earlier models, disconnect the fuel line from the filter and attach the siphon to the line. On 2008 and later models, insert a hose through the filler neck and into the bottom of the tank. Siphon or hand pump the fuel from the tank into an approved gasoline container. For 2007 and earlier models, disconnect the electrical connector and fuel supply line quick-connect fitting from the fuel pump module. Loosen the hose clamps and disconnect the fuel filler neck hose and EVAP system breather hose from the tank. Using two floor jacks, raise the lower control arms enough to take the load from the shock absorbers. Remove the shock absorber lower mounting bolt from each side and slowly lower the jacks. Reposition the floor jacks under the front of the subframe on each side, then remove the bolts from the front of the subframe. Slowly lower the subframe assembly about two inches. Support the fuel tank securely, then remove the fuel tank retaining strap bolts and carefully bend the straps enough to allow the tank to be removed. Carefully lower the fuel tank. Note: Make sure that none of the hoses or electrical connectors are being caught when the tank is being lowered. Installation is the reverse of removal. Be sure to tighten the fuel tank strap bolts securely. Reconnect the cable to the negative battery terminal, then start the engine and check for fuel leaks. For 2008 and later models, remove the rear subframe and suspension. Disconnect the filler hose clamp, then pull the plastic locks down on the vent tube and fuel lines. Insert the quick disconnect tool into the line and separate the lines and the vent tube quick disconnects. Disconnect the fuel tank and EVAP electrical connectors and EVAP canister hoses. Support the fuel tank securely, then remove the fuel tank retaining strap bolts. Remove the straps and carefully lower the fuel tank. Installation is the reverse of removal. Tighten the fuel tank strap bolts securely. Reconnect the cable to the negative battery terminal, then start the engine and check for fuel leaks.