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Ron Z.
Ron Z., - Chevy Tech -
Category: Chevy
Satisfied Customers: 17793
Experience:  18+yrs experience. State Inspector and Chevy Diagnostics
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Chevrolet Suburban How do you change the fuel filter on a

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How do you change the fuel filter on a 2003 Chevy Suburban?

Welcome to! My name is DriveFast71(Ron) and I will do my best to answer all of your questions completely and accurately.


Is this a Flex Fuel vehicle?


Customer: replied 5 years ago.

For the Flex Fuel fuel filter, you will need a special tool: J-46363 Fuel Line Release Tool. You can usually rent (or even buy cheap enough) this tool from any local parts store.



  • Raise and suitably support the vehicle.
  • Remove the fuel composition sensor bracket nuts.graphic
  • Reposition the fuel composition sensor/bracket off to the side.graphic
  • Using a flare nut wrench and backup wrench disconnect the fuel line fitting from the fuel filter.

  • Pull the quick connect fitting back until the internal retainers hit the filter stop.graphic
  • Twist one end of J-46363 and insert it between the fitting and the filter.graphic
  • Twist the opposite end of J-46363 and insert it between the fitting and filter.graphic
  • Once J-46363 is inserted, ensure that J-46363 is parallel to the filter and fitting.graphic
  • While holding the filter, push the fitting towards the filter in order to disconnect the quick connect fitting.

  • Remove the fitting from the filter.

  • Remove J-46363 from the filter.graphic
  • Remove the fuel filter from the bracket.
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