My 2000 5.3 engine has a whistle at about 2,000 rpm. Does this sound like a manifold leak or what. Maybe a fanor pulley? What's the groups best guess. Miles - 35,000
2000 Z71 Whistle
Oct 12, 2004
2 Replies
Muffler bearings...................that's my best guess....................he he he he.
Seriously, with such limited information can't tell ya much more. WHERE is the sound coming from in the engine bay? Front, back, left right? Is it a whistle or more like a squeal? Does it only 'whistle' at 2K RPM or does it persist at higher RPM's as well?
Does it only make the noise in idle or on the road as well?
Doc
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