Report: Cooling Fan Clutch May Fail Causing Noise and Check Engine Light
Chevrolet Trailblazer Problem
Engine Affected: 4.2L 6 Cylinder
Average Mileage: 87,201 mi (12,000 mi - 180,000 mi)
The cooling fan clutch may fail causing excessive fan noise and/or the Check Engine Light to illuminate.
Visitor, 2003 Chevrolet Trailblazer, 4.2L 6 Cylinder, 86,000 mi
I fixed both issues by cleaning the electric clutch connector on top of the radiator
Visitor, 2003 Chevrolet Trailblazer, 4.2L 6 Cylinder, 110,000 mi
Vehicle sounded like an airplane taking off when RPM was increased. Had just had water pump replaced due to bad bearings, making the fan wobble. Less than 100 miles later, fan clutch failed in the "on" position and would not disengage. Had to replace fan clutch at about $450.
Visitor, 2006 Chevrolet Trailblazer, 4.2L 6 Cylinder
It has happened twice in 120,000 miles
fix under warrenty
Visitor, 2002 Chevrolet Trailblazer, 116,000 mi
There is a loud humming noise from under hood-- shakes and vibrates when started up and at stoplights... transmission feels like it was slipping, would go to 3,000-3,500 rpms before shifting gears, terrible gas millage--
Found out it was the electronic clutch fan-- dealership wanted $400 for part, with 3 hours for labor,
found the part at autozone for $199, saved a couple hundred bucks---vehicle runs alot better and gas millage has gotten alot better
bought new clutch fan at autozone for $200. installed with my son in about 2.5 hrs. dealer wanted $800 for same job.
Visitor, 2006 Chevrolet Trailblazer, 4.2L 6 Cylinder, 62,100 mi
replacing fan clutch. At the shop right now. $800 at the dealer WOW A friend was visiting last week and has a Honda Accord. 2008 with over 100k miles. He bragged all he's done is oil changes and one set of front brakes.??
It makes me think because I've had several good size repairs on this Trailblazer already.
Visitor, 2004 Chevrolet Trailblazer, 4.2L 6 Cylinder
Loud noise coming from the engine fan w/ check engine light on
Visitor, 2002 Chevrolet Trailblazer, 47,000 mi
Same problem there is a ticking noise and I already replaced the fanclutch with this one from amazon.com trying to save some money and its making the same sound.
This is the sound
This is the one I purchased w 30 days warranty now I know why
Visitor, 2005 Chevrolet Trailblazer, 4.2L 6 Cylinder