Question about 2002 GMC Envoy

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2002 gmc envoy 6 cyl. f.i. how do i change the fuel filter? it has 2 lines

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There is no wrong way to hook this up, the in and out line are on the front to save space, either fuel filter connection can be the in or out, no polarity.

Posted on Jun 17, 2009


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My 2002 gmc envoy 4.2 liter 6 cyl is not running properly. It seems as though it may be due to fuel pressure problems

Have you ever changed the fuel filter ? Do you smell gas ? Check the vacuum hose at the fuel pressure regulator for fuel ! Check fuel pressure with fuel pressure gauge ! This is probably to much info but hook up a scan tool an check fuel trims ! Is the check engine light on ? Secret of Engine Problem Diagnosis Fuel Trims Pt 1

Aug 02, 2015 | GMC Cars & Trucks

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How do I know when I need a tuneup (spark plugs replaced) on a 2003 GMC Envoy XL (6 cyl). I've owned it for 6.5 years, it is 10 yrs old and I have never had a tuneup. It seems to hesitate a bit

If you change plugs I would thing changing fuel filter and check air filter also. I have a 2007 with 103,000 on it. The owners manual say the original plug are good for 100,000 miles and I changed them at 99,000 just to keep from having to do it on the fly if one of them fouled out. I did pay the 80 dollars to have the fuel system treatment. I do not know now what they called it but they changed the fuel filter also.

Jul 30, 2017 | 2003 GMC Envoy

1 Answer

Need firing order for 2004 gmc envoy

6 cyl. firing order = 1 - 5 - 3 - 6 - 2 - 4

8 Cyl. firing order = 1 - 8 - 7 - 2 - 6 - 5 - 4 - 3

Oct 08, 2011 | 2004 GMC Envoy

1 Answer


I guess you have a 4.2L in-line 6 cylinder, oil switch screw into bock by oil filter.

Jul 08, 2010 | 2002 GMC Envoy

2 Answers

Where can I locate the fuel filter on a 2002 evony

I believe the fule filter is underneath the vehicle just on the inside of the metal structure rail. Hmmm. I guess I should say that if you opened the front door and reached down under the rocker panel you should be able to touch it. This description is just to give the general area, please do a visual to locate the fuel filter in this area.

good luck

Mar 10, 2010 | 2002 GMC Envoy

2 Answers

Reduced engine power

New fuel filter, Spark Plugs & Wires, New air filter.
Tires at max cold psi.
Use a bottle of injector cleaner and change oil every 3k

Aug 19, 2009 | 2002 GMC Envoy

1 Answer

2005 GMC envoy XL won't start

Envoy/Trailblazer/Ranier/Ascender vehicles do have a fuel filter. Mine Envoy XL, 6 cyl.) is on driver's side, inside chassis under passenger door.

Jun 30, 2009 | 2005 GMC Envoy Xl

1 Answer

How to cahnge a fuel filter in a 2002 envoy

  1. Remove the fuel pump relay from the junction box
  2. Crank the engine.
  3. Allow the engine to start and stall.
  4. Crank the engine for an additional 3 seconds to ensure the relief of any remaining fuel pressure.
  5. Disconnect the negative battery cable in order to avoid re-pressurizing the fuel system.
  6. Install the fuel pump relay to the junction box .
  7. Tighten the fuel filler cap.

Jun 17, 2009 | 2002 GMC Envoy

2 Answers

Where is the fuel filter located on my 2002 Envoy 6 cyl?

Along the drivers side frame rail just in front of the fuel tank.

May 13, 2009 | 2002 GMC Envoy

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