Skip the auto shop - Our mechanics make house calls

Q: Squeaking sound - 1990 Chevrolet K2500

asked by on

Ok so my pickup out of random started squeaking. I replaced everything i can think of. Gone through 4 different brands of belts, replaced ac bypass pulley twice, tensioner pulley twice, rebuilt water pump, checked power steering pump, replaced power steering pump pulley, replaced alternator, checked tension on belt. Ive done all this. When i drive it sounds more like a smacking sound but the noise decreases as i drive more but never goes away. It does it at idle and at driving. I haven't replaced the harmonic balancer but i don't know if it would cause this sound. Ive taken it into 3 different shops and they don't know.

My car has 295 miles.
My car has a manual transmission.

Hi there. It sounds like it could be a harmonic balancer. Before replacing the balancer, check the radiator fan to see if the blades are hitting the shroud or anything else.

Also check the fan clutch, if equipped, for abnormal operation and a possible cause for the noise. Remove the belt and see if the noise goes away; if it remains, then the balancer may be at fault.

It definitely sounds like you’ve covered many of the other possibilities. I strongly suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts. YourMechanic has several available technicians that can assist you with an inspection of the squeaking noise, if you would like to have a mechanic service your car at your location. From there, they can follow up with any needed repairs.

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

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: Hi! Check Engine Light appeared after upgrading the timing on my Cadillac SRX 3.6 engine from year 2004 to 2007.

Hello. I would not recommend changing the timing between model years. There are certainly software differences in the engine management system (this is what is causing your Check Engine Light), and there may be physical differences in timing reference points...

Q: crankshaft pulley harmonic dampener fell off after serpentine belt replacement

It could be that the condition of the pulley caused your belt failure in the first place. Deciding that depends on where the balancer separated.The balancer itself consists of a center hub with a pulley ring around it and a...

Q: It has a slight rough idle

You may have fixed the misfire, but the rough idle may be due to clogged injectors and carbon build up on the valves. Try cleaning injectors and throttle body and intake system and see if problem improves. If you the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.