Chirping from under the hood, need help!
Thread Starter
Instructor
Joined: Nov 2003
Posts: 168
Likes: 0
From: Jennings LA
Chirping from under the hood, need help!
I have a chirp coming from under my hood. The car only does this when it is in drive. I have changed the belt tensioners and the belts. However the noise still hasn't stopped. Could someone please help me, the noise is driving me insain. It's just loud enough to make me go nuts. :banghead: :banghead:
Burning Brakes
Joined: Dec 2000
Posts: 993
Likes: 5
From: Cincinnati Ohio
Re: Chirping from under the hood, need help! (bhvette97)
bhvette97,
I had the same problem with my 1999 C5 coupe - There is a TSB that applies to 1997 - 1999 C5's (and 1998 - 1999 Camaro/Firebird) with the LS1 engine. It instructs the dealer to replace the idler pulley (the one under the alternator) with a revised / updated part.
My dealer replaced the idler pulley with the revised part as specified in the TSB and it eliminated the chirp / squeak. The part is inexpensive and the TSB allows 0.3 hours of labor. The mechanic said it is easier to replace from below while the car is on a lift.
You can see the bulletin and instructions at http://www.corvetteactioncenter.com - just go to the knowledge base area and select C5's and "engine". You'll find the bulletin.
Good luck - this is just another one of many defects in the C5.
I had the same problem with my 1999 C5 coupe - There is a TSB that applies to 1997 - 1999 C5's (and 1998 - 1999 Camaro/Firebird) with the LS1 engine. It instructs the dealer to replace the idler pulley (the one under the alternator) with a revised / updated part.
My dealer replaced the idler pulley with the revised part as specified in the TSB and it eliminated the chirp / squeak. The part is inexpensive and the TSB allows 0.3 hours of labor. The mechanic said it is easier to replace from below while the car is on a lift.
You can see the bulletin and instructions at http://www.corvetteactioncenter.com - just go to the knowledge base area and select C5's and "engine". You'll find the bulletin.
Good luck - this is just another one of many defects in the C5.
Administrator
Joined: Mar 2001
Posts: 368,385
Likes: 24,790
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '26
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Re: Chirping from under the hood, need help! (bhvette97)
Could be an idler pulley or maybe even the alternator pulley. If it will do it while in drive but not moving, have someone hold the brake and then listen to see if you can pinpoint the noise. Good luck.
