1. Open the hood of your Chevy Blazer.
2. Locate the fuel filler neck. It is usually located on the driver's side of the vehicle, near the rear.
3. Disconnect the fuel line from the filler neck. There may be a quick-connect fitting that you can disconnect by pressing on the release button. If there is not a quick-connect fitting, you will need to use a wrench to loosen the fuel line.
4. Remove the bolts that hold the filler neck in place. There are usually four bolts, two on each side of the filler neck.
5. Once the bolts are removed, you can pull the filler neck out of the vehicle.
Be careful not to spill any fuel when you are disconnecting the fuel line. If you do spill any fuel, clean it up immediately to avoid a fire hazard.
