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2004 Escalade ESV
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62 Posts
Discussion Starter #1
There is a squeaky noise located in the belt area of the engine. The noise starts at the initial startup and last for about 10-20 minutes then goes away. I took it in for service, but they could not find what's causing it. It's strange that the noise started after I picked up my ESV to have the tire pressure sensor replaced.
 

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2002 Cadillac Escalade AWD
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49 Posts
My 02 did that also, at first dealer couldn't find the problem but they finally replaced the belt and that fixed it. But now it is coming back. So I'm not sure what it was!
 

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2018 GMC Sierra, 1995 Jeep Wrangler
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12,114 Posts
My 03 used to squawk, worse after I parked it outside overnight...especially after a rain. I also had a 99 Z71 that did the exact same thing. Whatever the cause, it was a benign thing and minor annoyance. It does go away after several minutes of the engine running.

FWIW I attributed the problem to moisture. If I parked in my garage I wouldn't hear the noise. I assumed it was excess moisture that effected something in the pulley/drive system. There was a thread about the exact same thing not too long ago.

That's my 2 cents.
 

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2004 Escalade ESV
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62 Posts
Discussion Starter #4
My 03 used to squawk, worse after I parked it outside overnight...especially after a rain. I also had a 99 Z71 that did the exact same thing. Whatever the cause, it was a benign thing and minor annoyance. It does go away after several minutes of the engine running.

FWIW I attributed the problem to moisture. If I parked in my garage I wouldn't hear the noise. I assumed it was excess moisture that effected something in the pulley/drive system. There was a thread about the exact same thing not too long ago.

That's my 2 cents.
I park my ESV in an underground garage, but it has been getting humid in NYC lately. :confused:
 

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2008 SRX
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403 Posts
I've been waiting to see if you found a cure.
Check the pulley alignment. I have seen PS pulleys (guilty myself) not fully installed because they get REAL tight near the end of travel. An out of alignment PS pulley will cause a belt squeal.
 

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2004 Escalade ESV
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62 Posts
Discussion Starter #6
The squeaky noise started to get very annoying (very loud) last month so I brought it in to another service station. He replaced the serp belts and idler pulley, and lube the tensioner.

The noise was gone, but a week after the squeak started again on initial startups and then fades away after 5 to 10 minutes. It continues to squeak when I accelerate past 1500rpms to 2000rpms. :banghead:

I brought it back and he re-checked the problem. He couldn't find anything wrong with the belts and pulleys, but the chirp/squeak noise (when accelerating) is now coming from the alternator or water pump.

Anyone have problems with the alternator or water pump causing a squeak/chirp noise?
 
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