Question about 2006 GMC Envoy

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2006 envoy fan clutch or PCM

When the engine is cold and 1st strated it seems to not shift out of first and the fan sounds like it is reving higher that normal. The cars seems to not have full power and the problem goes away after a few minutes, when the engine warms up. The car is good for the rest of the day.

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The emission controls (or PCM) do what you are describing intentionally. There is an electrically controlled fan clutch. It is noisey when cold. The shifts are held to increase engine speed to heat up the catalytic converter faster.

Posted on Jun 20, 2009

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Posted on Jan 02, 2017

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2 Answers

My engine is making clicking noises when I start it. This lasts for about 10 minutes.


Sounds like a lifter hasn't pumped up . Put an additive in the engine oil that quiets noisy lifters. Any auto parts store or even walmart has it.

Apr 20, 2014 | 2004 GMC Envoy

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Hard to shift my gears when car in cold.Won't even go out of neutral to 1st gear.Forget about going into reverse.


With the engine off, check your operation of the gear shift. If you can go in and out of the gears fine without the engine running, then you have a worn clutch disc that needs replaced. If the problem still exists then you either have low fluid/weak hydraulic system, or there is a problem with the syncro that may be adjusted.

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02 envoy, 6 cyl, loud wooshing noise when engine is cold. fan clutch seems fully engaged. goes away when engine warms up. is this normal or does fan clutch need replaced


Fan clutches for Envoys and Trailblazer are a problem, they go out all the time.

However, it is normal for it to do this when cold, but will only stay engaged for maybe 15 seconds AFTER you've put it in gear and have started to drive. After this, it will disengage and allow the engine to warm up faster.

If you haven't already replaced the fan clutch once, you're lucky. 2002 is especially bad for the clutches, but all years don't last long. Mine lasted 90k which is pretty long.

Feb 26, 2011 | 2002 GMC Envoy

1 Answer

IT IS COLD OUTSIDE AND I REPLACED MY "WEAK"


Replace your fan clutch, very very common problem with trailblazers and envoys. It's just coincidence that the fan clutch went out when replacing the battery.

Jan 13, 2011 | 2006 Chevrolet Trailblazer

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I have a 2006 gmc envoy xl that sounds real loud like a jet when you start it up and when excelerating it gets louder and louder. Could it be the fan clutch or the relay any answers anyone


Fan clutch failure is common on these........and very costly to replace. With the engine cold, engine off, reach in and turn the fan, it should turn with minimal resistance, if it has heavy drag, or wont turn at all, it needs replaced.

Apr 27, 2010 | 2006 GMC Envoy Xl

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ROUGH SHIFTING PT CRUISER


Some modern vehicles when change the shift pattern while the engine is cold, by keeping the vehicle in a lower gear for a higher rpm while the engine is cold, the engine warms up faster, to reduce emissions. (Emissions are higher while the vehicle is cold)

What you may be experiencing is that the shift from first to second occurs at a higher rpm when the engine is cold than when warm. This can lead to an abrupt or hard shift. At higher speeds, the shift between gears either may not be changed, or just does not feel as hard as the 1st to 2nd shift.

If this is the case, then your dealer is telling you the truth and there is nothing he can do.

Aug 26, 2009 | 2007 Chrysler PT Cruiser Touring Hatchback

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

Engine Light on. Dealership says fan clutch is Slipping


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

Jan 28, 2009 | 2002 GMC Envoy

1 Answer

2000 Nissan Maxima sounds like its not shifting into 3rd gear


What do you mean by loud... Loud where??? If noise is from engine, make sure that the mechanical fan clutch is not "locked" (it's supposed to freewheel when cold... if it does not, it will "roar" when driving.

Jan 01, 2009 | 2000 Nissan Maxima

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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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