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

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

RepairPal Verified
Average mileage: 111,720 (12,400–193,000)
Engines affected: 4.2L 6 Cylinder, 5.3L V8
7 model years affected: 2002, 2003, 2004, 2005, more2006, 2007, 2008
68 people reported this problem
36 people shared problem details
2004 GMC Envoy- 4.2L 6 Cylinder125,000
When I step on the gas the engine fan gets loud like a plane is about to take off./
Upvoted (23)Flag Inappropriate
2006 GMC Envoy- 4.2L 6 Cylinder
If not fix - what damage could it cause?
Upvoted (16)Flag Inappropriate
2006 GMC Envoy- 4.2L 6 Cylinder79,900
has not been repaired due to excessive cost.
2003 GMC Envoy- 4.2L 6 Cylinder81,439
Fan clutch Makes a roaring noise and turns the SES light on when running the a/c
2005 GMC Envoy- 4.2L 6 Cylinder97,893
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.
2002 GMC Envoy90,000
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.
2005 GMC Envoy- 4.2L 6 Cylinder116,572
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?
2003 GMC Envoy- 4.2L 6 Cylinder141,200
Needed to replace fan clutch
2005 GMC Envoy- 4.2L 6 Cylinder94,400
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!
2003 GMC Envoy- 4.2L 6 Cylinder84,000
Radiator fan runs very fast and very loud when I step on the gas with low power.
2003 GMC Envoy- 4.2L 6 Cylinder83,000
Same problem
2002 GMC Envoy134,000
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.
2004 GMC Envoy- 4.2L 6 Cylinder58,900
Same issue loud noise under hood, brought to dealear confirmed fan clutch issue and about $800 to fix.
Fan clutch failure. Replacement of the fan clutch was $750.
2003 GMC Envoy- 4.2L 6 Cylinder
noise when revving up
2003 GMC Envoy- 4.2L 6 Cylinder120,000
Replaced fan and belt and thermostat and catalytic converter and o2 sensor because vehicle lost power too but still makes a loud noise. I hear from mechanics there is nothing wrong with it. It making the loud noise because the fan is actually working properly since the thermostat was fixed. I can't stand the loud noise. Is there a fix?
2002 GMC Envoy102,000
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.
2005 GMC Envoy- 4.2L 6 Cylinder83,000
I have been experiencing the issue of the loud fan noise. It is extremely irritating and embarrassing, to say the least. I just I my thermostat and my O2 sensor replaced and I can't afford yet another repair. So very upsetting.tpearson512@aol.com
When I start my 2003 GMC Envoy, it the motor sounds like it is racing but I am not going more than 20 mph. The racing sound goes away sometime but it consistence. I have replaced the clutch fan but the racing sound did not go away. Any suggestions, I've been yelled at on neighbor streets as they hear my engine racing but I'm only going 20 mph.
2005 GMC Envoy- 4.2L 6 Cylinder150,000
eng fan stays on at start up with cold eng. sounds like a jet taking off when accelerating. replaced vis/elec clutch with none oem part. worked ok for a year or so and same thing again. will replace with oem part this time I guess.
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