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Serpentine belt replacement

Tiny
ALAN1419
  • MEMBER
  • 2004 OLDSMOBILE ALERO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
How do I replace the serpentine belt removal 2004 alero v6?
Monday, February 21st, 2011 AT 2:48 PM

16 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Hello,

Here is a guide to help walk you through the repair and a diagrams below to show you on your car.

https://www.2carpros.com/articles/replace-serpentine-belt

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Monday, February 21st, 2011 AT 7:44 PM
Tiny
FRIENDINNEED
  • MEMBER
  • 2 POSTS
  • 2003 OLDSMOBILE ALERO
  • 190,000 MILES
Ive looked into how to change the belt but every way ive seen so far theres and way to get a hold on the belt tensioner where on my car there is not anything to to pry it up
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Tuesday, January 29th, 2019 AT 3:26 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Which motor?

Roy
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Tuesday, January 29th, 2019 AT 3:26 PM (Merged)
Tiny
FRIENDINNEED
  • MEMBER
  • 2 POSTS
2.2
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Tuesday, January 29th, 2019 AT 3:26 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Look at the image. You need a 3/8 rachet end to go into the tensioner and move it up and out of the way.

Roy
Image (Click to make bigger)
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Tuesday, January 29th, 2019 AT 3:26 PM (Merged)
Tiny
HELPME!123
  • MEMBER
  • 2 POSTS
  • 2001 OLDSMOBILE ALERO
  • 6 CYL
  • 100,000 MILES
I've been trying to change the serpentine belt on a 2001 oldsmobile alero. All the pulleys are ligned up just like the diagram shows, new belt, the tension arm needed to be and was replaced, but it still keeps popping off when I start the car.

Why would this be? One of the bottom pulleys seems to stick out more than the others which causes the next pulley in line to have the belt be hanging off a bit, could this be the problem? Could it be misaligned or something?
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Tuesday, January 29th, 2019 AT 3:26 PM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Yes that pulley sticking out further causing the to hang off a bit could cause the belt to be thrown off. Which pulley is sticking out further then the other one's?
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Tuesday, January 29th, 2019 AT 3:26 PM (Merged)
Tiny
HELPME!123
  • MEMBER
  • 2 POSTS
Thank you for the answer! It's the crankshaft I believe. I'm not really car savy but from what the diagram I have says it should be the crankshaft. Out of the two on the bottom it's located under the belt tensioner arm.
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Tuesday, January 29th, 2019 AT 3:26 PM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
It look's like the crank shaft pulley so why did you replace the belt tensioner?Was the belt popping off before you changed the belt tensioner when starting?
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Tuesday, January 29th, 2019 AT 3:26 PM (Merged)
Tiny
GLADNEYA
  • MEMBER
  • 1 POST
  • 1999 OLDSMOBILE ALERO
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 99,345 MILES
I was replacing a serpentine belt on my vehicle since it snapped while I was parked and the car was running. I got the engine mount off and placed the new belt on as well as replaced a leaking water pump. But now one of the pulleys has frozen up and I am not sure what the pulley is exactly to. I figured out the alternator, water pump, ac, and crankshaft puellys but not sure which one this is, it is a smaller pulley that is lined by the outer edge of the belt so no grooves on the belt touch it. Is there anyway to get a diagram showing what pulley this is exactly or is it just an idler pulley?
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Tuesday, January 29th, 2019 AT 3:26 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Hi:
It sounds like an idler pulley. To make sure, go to the "Drive Belt Routing Diagrams" section on this page. Put your car info in and it will provide you with a diagram to help identify the part.

If you have further questions, let me know engine size, options. So I can look for myself.

Joe
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Tuesday, January 29th, 2019 AT 3:26 PM (Merged)
Tiny
ALAUTS
  • MEMBER
  • 2 POSTS
  • 2003 OLDSMOBILE ALERO
  • 195,000 MILES
Replaced 2003 serpentine belt and it appears to align with everything except the crankshaft pulley. (Rides too close to the engine and will shred at least two grooves off of the belt). The AC compressor is the pulley just prior to the crankshaft pulley and it determines the belt position on the crankshaft pulley. Any idea what I can do to correct this?
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Tuesday, January 29th, 2019 AT 3:26 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Check the crank pulley to make sure it is in good condition. Many of these have a rubber mount in them to eliminate vibration. They can go bad and allow the pulley to change positions.
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Tuesday, January 29th, 2019 AT 3:26 PM (Merged)
Tiny
ALAUTS
  • MEMBER
  • 2 POSTS
Thanks for the suggestion. As soon as I get a good look at the camshaft pulley, I will update.
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Tuesday, January 29th, 2019 AT 3:26 PM (Merged)
Tiny
HLB771
  • MEMBER
  • 1 POST
  • 2001 OLDSMOBILE ALERO
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 140,000 MILES
I have 1 question my belt just broke i've looked at the diagram and tried to install the belt but it looks to me that I have to remove the motor mount and left the engine about 1 inch to slide belt under it to get it on right now. It has power steering a/c and alternator is in the back on the top and tension pulley is under it. Motor mount is smack in the middle of the motor between all the pulleys and the diagram looks to me that belt makes a full circle around motor not a crest moon shape to bi pass the mount need some help plz before I over work the problem. Ty
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Tuesday, January 29th, 2019 AT 3:26 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
If you have the 3.4L engine then yes you do have to remove the motor mount then use a 3/8 " breaker bar to rotate belt tensioner in counterclockwise motion to loosen belt.. for safety disconnect battery, then remove fuel injector sight shield. remove the hood so you can then remove the cross brace. you should be able to remove motor mount struts and get to belt ..goodluck


https://www.2carpros.com/forum/automotive_pictures/261618_Noname_2368.jpg

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Tuesday, January 29th, 2019 AT 3:26 PM (Merged)

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