Skip the auto shop - Our mechanics make house calls

Q: Belt noises pulley wobbles

asked by on

My GTO A4 has 59,000 miles on it. It's a great car but it started to make a belt sound like a mild chirp chirp chirp. When I looked closer the crank pulley harmonic balancer wobbles slightly. It hasn’t lost a belt yet though. I was reading about this and it's apparently a LS2 issue. Is it normal for a GTO to have failing pulleys? I am wondering how to fix this. The bolts aren’t loose. I have read that re-torqueing sn’t a permanent fix. Should I just buy an ATI or an OEM? Should I install a SLP or similar under drive? What ideas do you have?

A: Hey there, thanks for writing in about your...

Hey there, thanks for writing in about your 2005 Pontiac GTO. Worn idler pulleys or accessory components along the belt drive system may make noise as a sign the bearings are failing. As far as the brands, stick with OEM parts for the best results and reliability. If you would like an expert come out to pinpoint the problem, have one of our mobile experts here at YourMechanic come to you to find and repair the source of the noise.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Back fires and chokes on take off

Hello. In order to provide better advice I would have to know a few more details about the issue, specifically if the performance issues occur only when the vehicle is first started, or at all times. If the symptoms began...

Q: Car making whining noise

You likely either have a belt tensioner pulley noise or a power steering noise (based upon experience). Either choices are common, but the car should be properly diagnosed before replacing parts and wasting money. A qualified technician, such as one...

Q: Squeaking on car starting

You need to check the belt and tensioner to make sure it is tight. The belt may be stretched to its limit. It would need to be replaced if this is the case. If you'd like to get this fixed,...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.