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Thread: nasty squeek
05-05-2010, 09:56 PM #1
I have a 2001 Silverado 1500 2wd 4.8 with a real nasty squeal coming from the from the front of the motor. It sounds like a belt slipping, but that is not the case. It gets louder with more RPMs. I have already performed the following:
new serp belt
new idler pulley
new a/c belt
new a/c tensioner
new water pump
new fan clutch
The noise still persists. I have isolated the noise to the water pump/crank pulley area. Could it be the oil pump?
05-06-2010, 10:55 AM #2
Well sometimes when your serpentine belt gets wet from things like oil or coolant or power steering fluid, it can cause it to sqeak. So maybe when you changed your water pump, you spilt some coolant or you have a little leak from a mess up it your installation somewhere in the process, or have an oil leak or powersteering fluid leak.
Last edited by Silverado Junkie; 05-06-2010 at 10:59 AM.1995 Silverado,Z71, 3-inch lift,2-inch leveling kit, SkyJacker Suspension, short ram-air intake, throttle body spacer, MSD ignition coil, straight pipes
05-06-2010, 01:23 PM #3
Been through all of that already. There are no leaks anywhere. It was squealing prior to the water pump change, which is what prompted me changing the water pump in the first place.
If I don't get this squeal fixed soon, It's gonna drive me nuts! I know the neighborhood dogs will be happy when I do get it fixed. I'm sure that high pitched sound is hurting their ears.2001 Silverado 1500 Ex cab 2WD 4.8l 418RWHP
05-06-2010, 01:27 PM #4
Can you get someone to turn the steering wheel while its running, you watch the power steering pump see if thats the prob...95 tahoe 2dr 4x4 200,000+ miles
05-06-2010, 01:32 PM #5
I'll try that. D%#n sure can't hurt anything2001 Silverado 1500 Ex cab 2WD 4.8l 418RWHP
05-06-2010, 01:38 PM #6
What about taking the belt off and running it for a couple seconds to see if you can hear the noise? You don't want to do it long because the water pump won't be turning, but at least it would tell you if its one of the belt driven accessories or something else like the oil pump you mentioned..
05-06-2010, 01:40 PM #7
That's on the list of things to do this evening. I'll keep you posted. LOL2001 Silverado 1500 Ex cab 2WD 4.8l 418RWHP
05-07-2010, 02:47 PM #8
did you clean your pully's w/ brake clean when replacing the belt and tensioners?
a stethascope is 20-30 bucks and can make diaging noises alot quicker and easyerGM TECH
05 silverado shortbed
05-07-2010, 05:36 PM #9
A bad bearing in the alternater can make a squeeking noise.
05-10-2010, 04:08 PM #10
Found the problem!!
It's the damn belt, every belt that we've put on it........After two days, the "shiny new" wears off the back of the new belt(s) and it starts squeeking again!2001 Silverado 1500 Ex cab 2WD 4.8l 418RWHP
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