no more chirping, however
Melting Slicks
Joined: Jun 2012
Posts: 3,163
Likes: 6
From: Oceanside California
So , my car was supposed to be ready to pick up after work today.....got a call from the garage and said they woukdnt be done til tomorrow because they had to order parts. "the old sway bar links didn't make it" ????? What would that have to do with the pulleys? lol Its only $40 more, but one more wwithout my car in nice weather 
Thread Starter
Drifting
Joined: Apr 2013
Posts: 1,501
Likes: 185
From: Erie PA
He said they were not in great shape anyway lol replace w metal cuz he said "i would never put cheap plastic ones back on it". Picked it up today and it purrs like a kitten. All aluminum pulley, slightly under driven .
I'm so glad to have a quiet car
I'm so glad to have a quiet car
Drifting
Joined: Dec 2011
Posts: 1,706
Likes: 44
Chirping!!!!
I got this one folks!!!!It can stop here.
After replacing just about everything, I came across a GM bulletin about the C5 bird under the hood. I replaced tensioners, harmonic balancer, gatorback belts, etc...Still chirped.
Here is the PROBLEM...
The LARGE idler pulley (bigger pulley) has a dust cover on the bolthead side that is too thin and after time and heat it starts to constrict and contract. After time, it becomes weak and touches the bearing EVER so slightly causing it to chirp.
The Solution
There is a replacement dust cover that is thicker, but you can't buy it separately. You MUST buy the GM Idler Pulley (about $65) and it will come with the new dust cover.
*****NOW, MOST IMPORTANTLY****
Use a TORQUE WRENCH to tighten to 38lbs and not ONE DROP MORE OR LESS. I went to 37 (I think that's what it calls for) but it still chirped, I went to 39 and it chirped. Got a bit more precise and made it 38 ft lbs and 3 years later and the bird is still DEAD!!!
Take this to the bank. After you finish this, say Thank you!!!!
After replacing just about everything, I came across a GM bulletin about the C5 bird under the hood. I replaced tensioners, harmonic balancer, gatorback belts, etc...Still chirped.
Here is the PROBLEM...
The LARGE idler pulley (bigger pulley) has a dust cover on the bolthead side that is too thin and after time and heat it starts to constrict and contract. After time, it becomes weak and touches the bearing EVER so slightly causing it to chirp.
The Solution
There is a replacement dust cover that is thicker, but you can't buy it separately. You MUST buy the GM Idler Pulley (about $65) and it will come with the new dust cover.
*****NOW, MOST IMPORTANTLY****
Use a TORQUE WRENCH to tighten to 38lbs and not ONE DROP MORE OR LESS. I went to 37 (I think that's what it calls for) but it still chirped, I went to 39 and it chirped. Got a bit more precise and made it 38 ft lbs and 3 years later and the bird is still DEAD!!!
Take this to the bank. After you finish this, say Thank you!!!!
