I want to know how to change the gas tank on a 1998 Chevy lumina LTZ 3.1 L.........thanks
jack up the back of the car a high as you can,support with stands,purchase high pressure fuel line tool a local parts store,about 12 bucks.use a floor jack with a 2'x2' piece of plywood to suppport the weight better,remove the two long straps holding it up,one bolt on each,toward the front of the car,lower just enough to get at the fuel line connections,use the tool to unlock the special clips,you can also use a couple of scribes,or small flat screwdrivers,to get them apart,disconnect the fill tube,the hose that you put gas in the car from.might have to open the gas flap,remove cap,if there is screws or bolts take them out,unplug the wire harness going to the fuel pump on the top of the tank,everything should be un-hooked,just slowley lower it down,and pull it out the back on the jack,the less fuel in it the the easier it is ,i have a 2000 lumina,same engine,doesnt even look like you have to touch the exaust at all,should be the same as yours,un-hook the negative battery cable before you start just to be safe,hope this helps
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