Removing the fuel tank from your 1988 Pontiac 6000 will allow you to install a new tank if the old one is leaking or has damage to it. The tank sits in front of the rear axle up against the floorboard of the car and is held in place with two steel retaining straps. The tank is steel and prone to rust over time. New tanks are available from several sources, including parts stores, dealerships and collision parts suppliers.
Tools Used: Wrench set, Jack, Jack stands, Fuel line tool, Socket set, Ratchet, Scrap of wood
Remove the Gas Tank
Disconnect the negative cable from the battery terminal after removing the retaining bolt from the cable end with a wrench. Isolate the cable from the battery.
Raise the rear of the car off the ground with a jack. Lower the vehicle onto a set of jack stands under the rear suspension. Make sure the tank is empty or as close to it as possible. There is no drain plug so you will need to siphon any fuel out of the tank into an approved container.
Locate the fuel lines on the backside of the fuel tank. Use a fuel line disconnect tool to separate the lines. Unplug the electrical connector from the sending unit and lay it aside.
Position a jack with a piece of wood on top of it under the center of the tank. Raise the jack until the wood is resting against the tank. Remove the four bolts from the tank support straps with a socket and ratchet.
Lower the tank several inches to allow access to the filler neck where it meets the tank. Remove the hose clamp with a flat-head screwdriver. Detach the hose from the tank and lower the tank to the ground. Slide the tank out from under the Pontiac.
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