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#1
12-16-2002, 08:21 AM
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engine compartment noise
1999 Silverado, 5.3 Truck has a high pitched whining noise, that sounds like a belt. We have replaced the fan belt, the belt that runs the AC idler tensioner and alternator. Still can't pinpoint the noise. It seems to get worse, at a idle rather than at a higher rpm. It also only does this after it has warmed up and driven a few miles. Any ideas?
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#2
11-26-2003, 11:48 PM
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Re: engine compartment noise
I have exactly the same whining noise problem and it is driving me crazy. I was wondering whether you have solved it? I took mine to the dealer where I bought it and they say it is the heater core - They disconected the heater core hose(s) to test it and the whine stopped.
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#3
11-30-2003, 08:07 PM
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Re: engine compartment noise
Problem solved! See http://www.automotiveforums.com/vbul...d.php?t=152212
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Jan H Botes
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