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Gmt900 Tensioner Pulley

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SCHSIERRA Enthusiast

SCHSIERRA

Posted
Posted

My tensioner pulley is making some nasty bearing noises (at idle) already with 13,000 miles. Anybody else have this problem or heard of it on the GMT900's?

 

I also have a ticking noise from the engine bay in high gear and light accelleration. I'm thinking this may be related.

Wingnut Senior Enthusiast

Wingnut

Posted
Posted

I can't believe GM STILL has problems with these. Been an issue for like 20 freakin' years now. Not a big one...But every GM truck I've had since '89 on has had pulley bearing issues.

 

If you're the handy type, go look up a bearing dealer in your local area. You can pick up new, higher-quality bearings and press them in yourself for a fraction of the cost of a new pulley. Usually less than $10.

SCHSIERRA Enthusiast

SCHSIERRA

Posted
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Posted

I can get a replacement AC DELCO for $17.60 shipped. I would rather do it myself then send it to a shop. But if it's common, I should prob. find a different brand. My S-10 Blazer did the same thing.

pm26 Senior Enthusiast

pm26

Posted
Posted
I can get a replacement AC DELCO for $17.60 shipped. I would rather do it myself then send it to a shop. But if it's common, I should prob. find a different brand. My S-10 Blazer did the same thing.

 

Are you talking the spring loaded tensioner pulley or the idler pulley. if I am not mistaken, the tensioner pulley costs a lot more than $ 17 from gmpartsdirect.com. More like $ 70.

pm26 Senior Enthusiast

pm26

Posted
Posted
I can't believe GM STILL has problems with these. Been an issue for like 20 freakin' years now. Not a big one...But every GM truck I've had since '89 on has had pulley bearing issues.

 

2 reasons: cheap bearings

 

bearings possibly pressed wrong into the pulley

SCHSIERRA Enthusiast

SCHSIERRA

Posted
  • Author
Posted
I can get a replacement AC DELCO for $17.60 shipped. I would rather do it myself then send it to a shop. But if it's common, I should prob. find a different brand. My S-10 Blazer did the same thing.

 

Are you talking the spring loaded tensioner pulley or the idler pulley. if I am not mistaken, the tensioner pulley costs a lot more than $ 17 from gmpartsdirect.com. More like $ 70.

 

 

The tensioner pulley, not the idler pulley thats next to the alternator. $70 for just the pulley? Or the whole tensioner? I found just the pulley (P/N: 38009) for $14.24 and the tensioner with pulley (P/N: 38158) for $45.79 on RockAuto.com both are AC Delco.

pm26 Senior Enthusiast

pm26

Posted
Posted
I'm at work so can't get my warranty paperwork but does anybody know if I were to change the pulley myself if it would do anything to my warranty?

 

if you use a genuine GM identical part, there is no way anybody will know.

jblakeney Senior Enthusiast

jblakeney

Posted
Posted
My tensioner pulley is making some nasty bearing noises (at idle) already with 13,000 miles. Anybody else have this problem or heard of it on the GMT900's?

 

I also have a ticking noise from the engine bay in high gear and light accelleration. I'm thinking this may be related.

 

Yup....... I sell them like hot cakes........

 

Jbo

brims Senior Enthusiast

brims

Posted
Posted
I'm at work so can't get my warranty paperwork but does anybody know if I were to change the pulley myself if it would do anything to my warranty?

 

I can't imagine they would be able to tell or be able to kill any warranty for replacing a bearing in a pulley.

C. Charles Hahn Senior Enthusiast

C. Charles Hahn

Posted
Posted
I'm at work so can't get my warranty paperwork but does anybody know if I were to change the pulley myself if it would do anything to my warranty?

 

I can't imagine they would be able to tell or be able to kill any warranty for replacing a bearing in a pulley.

 

 

Nope. People are overly paranoid about GM voiding their warranties as far as I'm concerned.

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