Last post on Mar 28, 2013 at 11:28 AM
You are in the Chevrolet Suburban & Tahoe
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Chevrolet Tahoe, Chevrolet Tahoe Limited/Z71, SUV
#625 of 745 Chevy Tahoe and Whistling noise
Jun 07, 2010 (10:08 am)
i have a Chevy Tahoe 2007 that i bought used.
As soon as i took it home i could hear a whistling noise when i turn the climate control on.
If i open a window just a little the sound goes away.
It looks to me that its negative pressure created by the climate control and when air is entering
the cabin it is whistling somewhere.
Any help would be great since the dealer where i bought it already had the car for 3 different occasions and still didn't fix it.
#626 of 745 Re: Chevy Tahoe and Whistling noise [opcart]
Jun 07, 2010 (8:41 pm)
Make sure all of your dash vents are open. They will whistle if a couple of them are fully closed. Do you notice any change in the flow from the vents when you crack the window?
#627 of 745 Re: mountaineer4 [mountaineer4]
Jun 09, 2010 (9:37 am)
It's probably the same thing as they fixed at 12K. Most likely it's the "intermediate shaft". My dealer replaced my wife's (2004) w/ the new design part and even tho out of warranty, they didn't charge me. Called it "customer satisfaction". I do treat them right.
Jun 09, 2010 (11:01 am)
Have an '04 Z71 w/high mileage. Has been performing great for (6) years, perfect maintenance records. Noticed a "puffing sound" when going uphill or when the engine is under any strain. As long as you are traveling on a level grade or going slightly downhill, no sound. Asked the dealer about it on the last service and they said they couldn't hear anything. Is it possibly: fouled plug or bad plug wire?, muffler or catalytic converter going out? Just had the injectors serviced. Any suggestions?
#629 of 745 Loud engine tapping coinsides with oil gauge bounce
Jun 10, 2010 (11:51 am)
Hi all, I have a 2001 Tahoe with about 145,000 miles on it. Lately, it often idles very rough at start up and has a loud tapping noise. Coinciding with the tapping and rough idle, the oil gauge bounces severely. After several minutes, the tapping slowly subsides and the oil gauge bounce slows down relative to the noise and the engine smooths out. The noise and the gauge bounce are definitely tied together, but I am totally stumped as to how. It seems to be worse the colder the weather gets. Originally I assumed I had a sticking lifter because the engine ran so roughly and flushed the crankcase a couple of times to dissolve any buildup of varnish, etc., but that doesn't explain the gauge bounce, . . . . . does it? Any ideas?
#630 of 745 Re: Loud engine tapping coinsides with oil gauge bounce [blowtie]
Jun 26, 2010 (8:49 pm)
Stuck lifter(s), oil pump, sludge buildup. All I can think of right now.
#631 of 745 Re: Loud engine tapping coinsides with oil gauge bounce [73shark]
Jun 29, 2010 (11:15 am)
I forgot to mention that I also use about 1/2 gallon of antifreeze every 1,000 miles or so. My mechanic has assured me that my water pump seal is leaking as that is very common on this engine, but there is absolutely no trace of leakage. There is absolutely no residue around or under the water pump indicating the antifreeze evaporates without being detected. I thought that all of these problems may indicate a blown head gasket or worse.
#632 of 745 Re: Loud engine tapping coinsides with oil gauge bounce [blowtie]
Jun 29, 2010 (2:29 pm)
I'd be more inclined to think ur antifreeze is either getting into the oil (most likely considering the noise & the bouncing oil gauge) or getting into combustion chamber and going out the exhaust. Antifreeze ruins bearings. Look at the underneath side of the oil fill plug and check for moisture or a gray, jelly-like substance. Sure signs of water in the oil. If so, then ur engine will need an overhaul.
#633 of 745 “2004 Tahoe vibrating sound while idling”
Jul 13, 2010 (8:37 am)
I have a 2004 Tahoe which recently started making a vibrating sound while idling. It is especially loud when I am backing up and apply the break. Any thoughts?
#634 of 745 Re: Tahoe "airplane" noise [knorwood]
Jul 13, 2010 (9:02 am)
It was the Hub bearing on my front driver side. Thanks to all of your thoughts on the subject. I know this one was a bit hard by description only. I finally can hear myself think again....