Replacing The Fuel Tank In A Gmc Suburban: Step-By-Step Guide

If you're looking to replace the fuel tank on your 99 GMC Suburban, there are a few things you should know. Firstly, make sure you have the correct replacement fuel tank for your specific model of GMC Suburban. You can find these at automotive stores or online. Once you have the replacement tank, the process of removing the old tank and installing the new one involves disconnecting and reconnecting various components such as fuel lines, straps, and filler tubes. It is recommended to refer to a repair manual or seek assistance from a professional mechanic if you are unsure about any steps in the process. Additionally, some tools, such as a fuel line disconnect tool, may be required.

Disconnect the fuel fill tube

To disconnect the fuel fill tube on a 1997 GMC Suburban, first, start by disconnecting the tube from the body. Then, undo the gas tank strap and place a jack under the tank to hold it up against the vehicle. Slowly lower the jack until you can access the underside of the tank. If the gas tank does not drop, it may be stuck due to corrosion. In this case, try tapping the gas tank gently to loosen it. Once you have enough space to work with, proceed to undo the gas filler tube from the gas tank, as well as the wire harness and fuel lines from the sending unit. Be sure to have a replacement sending unit wire harness on hand, as the original one may have broken wires.

Undo the gas tank strap

To undo the gas tank strap on a 1997 GMC Suburban, start by disconnecting the fuel fill tube from the body. Then, undo the gas tank strap and place a jack under the tank to hold it up against the vehicle. Slowly lower the jack. If the gas tank does not drop, it may be stuck due to corrosion. In this case, keep the jack under the tank and try to tap it loose. This should allow you to lower the tank just enough to undo the gas filler tube, wire harness, and fuel lines from the sending unit. Once everything has been disconnected, you can proceed to lower the tank completely and remove it from the vehicle.

Tap the gas tank loose

To tap the gas tank loose, you will need to place a jack under the gas tank to hold it up against the Suburban. Then, slowly lower the jack. If the gas tank does not drop, it may be stuck due to corrosion. Keep the jack under the tank and try to tap the gas tank loose. This should allow the tank to drop just enough for you to undo the gas filler tube from the tank itself, as well as the wire harness and fuel lines from the sending unit. Once everything has been disconnected, you can proceed to lower the tank until it is completely removed from the Suburban.

Disconnect the gas filler tube

To disconnect the gas filler tube on a 1997 GMC Suburban, first, make sure you have unbolted the gas tank straps and placed a jack under the tank to hold it up against the vehicle. If the gas tank does not drop, it may be stuck due to corrosion. In this case, keep the jack under the tank and try to tap it loose. Lower the jack slowly until the tank drops just enough for you to access the gas filler tube. Once you can reach the tube, disconnect it from the gas tank, along with the wire harness and fuel lines from the sending unit. With these disconnected, you can then proceed to lower the tank completely and remove it from the vehicle.

Lower the tank

To lower the tank, you will need to disconnect the fuel fill tube from the body of the vehicle. Undo the gas tank strap and place a jack under the tank to hold it up against the Suburban. Slowly lower the jack. If the tank does not drop, it may be stuck due to corrosion. Keep the jack under the tank and try to tap it loose. Lower the tank just enough to undo the gas filler tube, wire harness, and fuel lines from the sending unit. Once everything has been disconnected, proceed to lower the tank until it is completely removed from the vehicle.

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