5.3 Yukon XL Whistle with belt off
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5.3 Yukon XL Whistle with belt off
Hi Ive had a problem with my yukon xl with the 5.3L Vortec. It has been making a very high pitched whistle sound that matches rpms. I have replaced the alternator, ac tensioner pulley, and the ac belt. It also makes the sound with the serpentine belt off. I have also sprayed brake cleaner around the intake manifold to no avail. I also have no performance losses at all. I can get the sound to be constant at 1500 rpm. The ac does not work in general aswell
Here is a link from inside
Here is a link from inside
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Nodakchevyguy88
Silverado, Sierra & Fullsize Pick-ups
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Oct 9, 2011 10:12 AM