This is not a new problem. I have been trying to locate the squeaking problem for a while now. It's there one week and not the next. There is no correlation between weather temperature, humidity, season, etc. This truck only has 70,000 miles by the way.Today I replaced the serpentine belt, the AC belt, the belt tensioner, and the alternator. The alternator was squeaking when I rotated the pulley by hand. The new alternator did not eliminate the squeak. The AC belt tensioner functions appropriately. I thoroughly cleaned the grease off the pulley surfaces. I really need to get this fixed.What else is there to check or do to eliminate the squeaking? Thanks for your help guys.

A separated harmonic balancer can cause this, and usually is only found after replacing everything else that moves under the hood.

Take the serp belt off and start er up.Squeak still there?

Where is it located and how do I assess its integrity please? Thanks.

this video helped me with my "squeak" are you sure all the pulleys are lined up?https://www.youtube.com/watch?v=fPjmBQc2gGQ

Jeff, I chased this same problem for years and finally found the solution on one of the GM truck forums: Use only Goodyear GatorBack belts.I changed the belts and tensioners several times, and each time the squeak would go away for a while....but it always came back. About 2 years ago I changed all 3 tensioners and both belts and installed the Gatorback belts, and have been quiet as a mouse ever since!Something about the 8.1, lots of guys have the same problem

Engine squeaking #$%#$%# | Good Sam Community

19 Replies

Ron3rd
Explorer III
May 08, 2014
On my wife's old Caravan, I replaced a couple of the pulleys. These pulleys had bearings in them and would go bad.
BurbMan
Explorer III
May 08, 2014
Actually there is plenty of room without removing the radiator, just pull that top shroud and take off the fan and fan clutch.
pauldub
Explorer
May 08, 2014
Out west here, they come off pretty easily as long as you have enough room to work. I don't know if they come off easily in the rust belt. You might have to remove the radiator to have enough working space.
jefffoxsr
Explorer
May 08, 2014
I have the goodyear gatorback. I removed the belt and started the truck. The squeak is still there. The harmonic balancer is not spinning straight. It is crooked. That must be the problem. If I get a puller does it come off easily? Could I just throw on a new one without doing anything extensive like removing the front cover?
BurbMan
Explorer III
May 08, 2014
Jeff, I chased this same problem for years and finally found the solution on one of the GM truck forums: Use only Goodyear GatorBack belts.

I changed the belts and tensioners several times, and each time the squeak would go away for a while....but it always came back. About 2 years ago I changed all 3 tensioners and both belts and installed the Gatorback belts, and have been quiet as a mouse ever since!

Something about the 8.1, lots of guys have the same problem
rav
Explorer
May 08, 2014
this video helped me with my "squeak" are you sure all the pulleys are lined up?

https://www.youtube.com/watch?v=fPjmBQc2gGQ
jefffoxsr
Explorer
May 08, 2014
Where is it located and how do I assess its integrity please? Thanks.
Turtle_n_Peeps
Explorer
May 08, 2014
Take the serp belt off and start er up.

Squeak still there?
carringb
Explorer
May 08, 2014
A separated harmonic balancer can cause this, and usually is only found after replacing everything else that moves under the hood.

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Engine squeaking #$%#$%#

19 Replies

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