GM Service Manual Online
For 1990-2009 cars only

Warning: Remove the fuel tank cap and relieve the fuel system pressure before servicing the fuel system in order to reduce the risk of personal injury. After you relieve the fuel system pressure, a small amount of fuel may be released when servicing the fuel lines, the fuel injection pump, or the connections. In order to reduce the risk of personal injury, cover the fuel system components with a shop towel before disconnection. This will catch any fuel that may leak out. Place the towel in an approved container when the disconnection is complete.

Caution: Do not perform this procedure if the engine is hot. Unburned fuel entering the catalytic converter could damage the converter catalyst.

  1. Loosen the fuel filler cap in order to relieve the fuel tank pressure.
  2. Remove the rear seat cushion assembly. Refer to Rear Seat Cushion Replacement.
  3. Remove the rear floor service hole cover.
  4. Disconnect the fuel pump electrical connector.
  5. Start the engine and allow the engine to stall.
  6. Crank the engine for an additional 3 seconds in order to assure relief of any remaining fuel pressure.
  7. Tighten the fuel filler cap.
  8. After performing the necessary service work, connect the fuel pump electrical connector.
  9. Install the rear floor service hole cover.
  10. Install the rear seat cushion assembly. Refer to Rear Seat Cushion Replacement.