Question about 2002 GMC Envoy

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Engine Light on. Dealership says fan clutch is Slipping

GMC 2002 Envoy XL. They said that they could not fix it until the fan clutch actually broke.Then they will replace and upgrade the computer. Cost is $700.00. Is this true?

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  • Roberta Smith
    Roberta Smith May 11, 2010

    Let me guess... it's near the end of the warrenty period ?

  • Anonymous Mar 22, 2014

    Check engine light on code indicate fan clutch problem

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  • 7 Answers

Work for GM dealership.The fan can be replaced anytime and a pcm reflash can also be done anytime.If the service engine soon lamp is on because of cooling fan code it is broke!!!!! As far as the price sounds about right

Posted on Jan 31, 2009

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After replacing the fan clutch and water pump do i have to reprogram the computer on a 2003 gmc envoy?


No! there is nothing to reprogram. The sensors in the coolant system and the temp sensor for the fans dont need to have anything done to them. If you are not getting any check engine light, you are good.

Feb 16, 2014 | 2003 GMC Envoy Xl

2 Answers

I have a service engine soon light and the code that appeared when check is 1481, do you know what this means?


Service Engine Soon (SES) or Check Engine Light On, DTC P0480, P0526/P1481/P1484 Set (Replace Engine Cooling Fan Wiring Harness) #05-06-02-012B - (10/19/2006)

Models:2004-2006 Buick Rainier
2002-2006 Chevrolet TrailBlazer, TrailBlazer EXT
2002-2006 GMC Envoy, Envoy XL, 

Some customers may comment that the Service Engine Soon (SES) or Check Engine light is illuminated. This condition may be intermittent and upon investigation, the technician may find either DTC P0480, P0526, P1481 or P1484 set.

This condition may be caused by the cooling fan harness chaffing against the plastic guide it routes through. This contact may damage the insulation of the wires enclosed in that harness.

Replace the wire harness: 
Part Number 89024920 Description Harness Assembly, Engine Cooling Fan Wiring

Good luck and keep me posed. 

Aug 11, 2009 | 2003 GMC Envoy

1 Answer

2002 envoy 4wd problem. clicking sound comes and


Clicking sound- Possible electronic fan clutch failing. This is a typical problem with the 4.2L I6. When you hear the clicking, open the hood and listen if its coming from the fan clutch on front of the engine. this could also cause abnormal engine and transmission cooling. As for the "N" light and 4wd issue, have scanned at the dealer....Hopefully this helps

Jul 18, 2009 | 2002 GMC Envoy

1 Answer

2003 Envoy XL


It is in the front of the engine with the fan mounted to it. It is electronicly controled. If you change it be very careful the radiator is easy to damage. Good Luck

May 18, 2009 | 2003 GMC Envoy Xl

1 Answer

Digital ac controls don't respond and fan stays on whencar is off


The way to fix this is by changing the blower motor resistor.
I paid $138.00 at the dealership for a new one and it solved the problem.

Jan 15, 2009 | 2004 GMC Envoy

1 Answer

Loud air intake engine noise on startup


I would guess it is the electronic fan clutch. It will cause the fan to run too fast (very loud) and the light will come on sometimes.

Nov 10, 2008 | 2002 GMC Envoy XL

2 Answers

Envoy 2002


You need to find a shop with a Tech 2 scanner. The pcm has to be recalibrated because when the fan clutch goes bad it back feeds into the computer and stores a hard code. And because the 02 is the first year for this style envoy its a pos! And these A**Holes from GM thought it was a good idea to have a electronic throttle body and gas peddle.

So in a nutshell it needs to have a PCM.AZ UPDATE AND YOUR DONE! SELL IT AND BUY SOMETHING YOU CAN FIX IN YOUR BACKYARD ON THE WEEKEND!

Aug 27, 2008 | 2002 GMC Envoy

3 Answers

2002 GMC Envoy is having a tough time shifting at 85,000 miles. It also starts & idles at higher RPMs. The car is also much noiser from the engin & fan. What is wrong - the trans., motor needing a...


I ran into this concern with my 2002 and my wife ran into the almost identical problem with her 2003. this may sound silly,, but it was the clutch fan. Extreme loss of power from time to time came first. Then a roar of the what seemed like the engine when stopping. Actually cut off after it started to roar at highway speeds, and had absolutely no excelleration from time to time. Sometimes all of the symptoms completely went away. After taking mine to the dealer several times, finally they got it right and replaced the fan clutch. When my wifes 2003 SLt started doing the exact same thing as my 2002 had done, we both knew what the problem was, and the dealer did a quick fix. $600.00. Perhaps this should have been a recall feature, but never was. Everyone that I know that has an envoy, somewhere around the 72,000 and 103,000 mile mark has had this problem and have had to have the clutch fan replaced. It may sound like the vehicle is going to have to be junked,, but that is all it needs.

Aug 10, 2008 | 2003 GMC Envoy

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