Check Engine Light and/or Excessive Fan Noise on GMC Envoy

Problem Description and Possible Solution

The cooling fan clutch may fail causing excessive fan noise and/or the Check Engine Light to illuminate.

Problem Data
RepairPal Verified
Average mileage: 115,641 (12,400–238,764)
Engines affected: 4.2L 6 Cylinder, 5.3L V8
7 model years affected: 2002, 2003, 2004, 2005, more2006, 2007, 2008
97 people reported this problem
Viewing 1 - 20 of 51 comments
When I step on the gas the engine fan gets loud like a plane is about to take off./
If not fix - what damage could it cause?
center pulley w/ fan attached is wobbling and chirping, not sure if this the water pump or not?
Check Engine Light illuminated and took the car to the dealer to have it checked. They ran a diagnostic test and said the Cooling Fan Clutch needed to be changed. Cost $1185.00. Outrageous! Read other same complaints about cooling fan clutch. With the number of complaints, shouldn't this be a recall also?
Fan Clutch will fail, causing the cooling fan to be locked on. This results in loss of engine power, reduced fuel mileage, and a sound like there is a jet engine under the hood when accelerating. If you accelerate too hard it will set a check engine light condition for excessive fan speed.
I have not gotten it fixed yet. I was just checking to see what the problem of my envoy sounding like a jet engine could be caused from and the cost to repair.
Fan clutch makes a roaring sound when the engine is accelerated.
Same issue was told it was fan clutch. just had replaced and now the damn thing is ticking. took it back and they said it was normal! it never ticked before and I have had the car for a year!
Fan clutch Makes a roaring noise and turns the SES light on when running the a/c
Radiator fan runs very fast and very loud when I step on the gas with low power.
Fan clutch intermittently locks up creating noise and check engine situation. The code reads cooling fan speed too high. Replacement fan clutch does same thing.
The fan clutch will not engage. My lights have not came on as of yet. I can't afford to have the engine over heat. The part costs way to much. I believe if the envoy is doing this it should be a recall.
Needed to replace fan clutch
Have had this problem off and on. It stopped working but then restarted working. One mechanic said it wouldn't really cause any problems. Cost to fix now 261.00 for part + labor.
has not been repaired due to excessive cost.
noise when revving up
Same issue loud noise under hood, brought to dealear confirmed fan clutch issue and about $800 to fix.
Same problem
Fan clutch failure. Replacement of the fan clutch was $750.
Sounds luke a plane taking off when I step on gas