GM Service Manual Online
For 1990-2009 cars only
  1. Remove the fuel tank from the vehicle. Refer to Fuel Tank Replacement.
  2. Remove the five screws and the fuel level sensor (fuel gauge sending unit) from the fuel tank.
  1. Install the fuel level sensor (fuel gauge sending unit) to the fuel tank and secure with five screws.
  2. Install the fuel tank to the vehicle. Refer to Fuel Tank Replacement.