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Jaxer Smith
Jaxer Smith, Auto Mechanic
Category: Car
Satisfied Customers: 1272
Experience:  17 yrs experience and currently own and operate an Auto Repair Center
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how to change a fuel filter on a 2002 GMC sierra

Resolved Question:

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Submitted: 8 years ago.
Category: Car
Expert:  Jaxer Smith replied 8 years ago.

Hi, Welcome to Just Answer!

Fuel Filter

Removal & Installation

To Remove:

  1. Before servicing the vehicle, refer to the Cautions and Warnings in the beginning of this section
  2. Disconnect the negative battery cable
  3. Relieve the fuel system pressure (See: Fuel Pressure Relieving below)
  4. Raise the vehicle
    Fuel filter-4.8L, 5.3L, 6.0L engines


  5. Clean all the fuel filter connections and the surrounding areas before disconnecting the fuel lines in order to avoid possible contamination of the fuel system
  6. Disconnect the threaded fittings from the fuel filter
  7. Cap the fuel lines in order to prevent possible fuel system contamination
  8. Slide the fuel filter from the bracket
  9. Inspect the fuel line O-rings for cuts, nicks, swelling, or distortion
  10. Replace the O-rings if necessary.

To Install:

  1. Slide the fuel filter into the bracket
  2. Remove the caps from the fuel lines
  3. Connect the threaded fittings to the fuel filter and tighten the fittings
    • Torque to: 18 ft. lbs. (25 Nm)
  4. Tighten the fuel filter bracket bolt
    • Torque to: 106 inch lbs. (12 Nm)
  5. Lower the vehicle
  6. Tighten the fuel filler cap
  7. Connect the negative battery cable
  8. Use the following procedure in order to inspect for leaks:
    • Turn on the ignition, with the engine off, for 2 seconds
    • Turn off the ignition for 10 seconds
    • Turn on the ignition, with the engine off
    • Inspect for fuel leaks
  9. Install the engine sight shield
  10. Test drive the vehicle to confirm the repairs

Fuel System Pressure


Relieve the fuel system pressure before servicing fuel system components in order to reduce the risk of fire and personal injury.

NOTE: After relieving the pressure, a small amount of fuel may be released when servicing the fuel lines or connections. To reduce the chance of personal injury, cover the regulator and the fuel line fittings with a shop towel before disconnecting.

  1. Disconnect the negative battery cable.
  2. Remove the engine sight shield, if equipped.
  3. Loosen the fuel filler cap to relieve the fuel tank pressure.
  4. Connect the J 34730-1A fuel pressure gauge or equivalent to the fuel pressure valve.


  5. Place the bleed hose of the gauge into an approved container.
  6. Open the valve on the gauge to bleed the system pressure.
  7. The fuel connections are now safe for servicing.
  8. Drain any fuel remaining in the gauge into an approved container.
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