Question about 2001 Chevrolet Tahoe

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2001 chevy tahoe exhaust seems to be whistling

When started the exhaust is whistling at a high pitch also the converter rattles while driving. It is not a mounting problem as the converter is solid and no corrosion is present also the exhaust is sound as well. The problem seems to be on the inside

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The filter in cat. conv. is broken will need to be replaced,is or may cause exhaust restriction flow!

Posted on Mar 08, 2009

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Sounds like air is shooting out when accelerating. Could this be an exhaust leak? Plugs, coils, hoses seem fine. Noise is coming from passenger side under engine sounds like.


yes could very well be an exhaust leak.but that should be kinda loud and annoying..also u could have a slight whistling sound coming from ur air intake hose coming from air cleaner box to ur intake or throttle body or ur air inlet goin to the motor. when the motor is accelerated it would produce a high pitch sound like a whistling .hope this can help

Jun 28, 2015 | 2001 Mazda Tribute

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My 2004 tahoe is making a clicking noise from under the truck, sound like putting a nail in can and shaking it around, I hear it on startup as i drive, when my speed is above about 35, the noise disap


I think you have a broken ceramic brick in the catalytic converter in the exhaust system, hit it with a rubber mallet and see if it rattles.

Oct 26, 2012 | 2004 Chevrolet Tahoe

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The 1998 chevy lumina is whining and the gas mileage is going down


high pitch whine- like a whistle? check for a plugged egr valve or a melted catalytic converter

May 19, 2011 | 1998 Chevrolet Lumina

1 Answer

2001 4.2 V6 check engine light on truck seems to be running fine.Rattle in my catalytic converter when idling


The rattling in the converter is more than likely a broken honeycomb disk in the converter. Ford typically uses three in their converters. Two towards the ends and one in the center. When these disks break they rattle at an idle. This will affect your emissions and the down stream oxygen sensor is telling you that there is a problem. A converter will be a very expensive item. Don't decide to remove it and not replace it. Most cars run better with the emissions equipment installed and working as they optimize fuel economy based on fuel and oxygen levels in the exhaust. Take your vehicle to a reputable exhaust shop and they will test and replace the converter for you and clear the check engine light when they have completed the repair.

May 11, 2011 | 2001 Ford Econoline

1 Answer

I have a 1999 Chevy Blazer 4dr with 4x4 recently I have noticed that when I accelerate there is a loud rattling coming from th underside of my truck, it also happens while I'm at a stop, and still in...


It could be the catalytic converter. While vehicle is off and parking brake on, go under the vehicle while it is cool and tap on the exhaust. See if the noise doesnt sound the same as you tap where the exhaust goes into the bigger section by the transmission.

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My 2003 Ford Explorer has a high pitched whistle around 2000 RMPs. If I accelerate or decelerate the whistle stops. I've replaced the idle aircontrol valve, as I read this could be a possible solution to...


you may have a tensioner or idler pulley starting to go bad. They make a high pitched whistle when the bearings are on thier way.

Simply have someone slowly bring it up to 2000 rpm and listen with the end of a wooden broom handle touching the center bolt on each. Be careful not to get caught.

If you're not used to this you may be able to hear it whithout use of the "hearing aid"

Your drive belt may simply need dressing. You can buy this at almost any auto parts store for about 4 bucks. (dont use anthing else as you will cause the belt to stretch creating more issues)

Jan 01, 2010 | 2003 Ford Explorer

1 Answer

2004 ranger 3.0L starts but idles rough then stalls. Problems started with major loss of power with a hi pitched whistling and strong exhaust smells.


I suspect you have plugged catalytic converter - hence the whistle. If you hook up a vacuum gauge to the intake manifold vacuum port, it will be low, like around 10 when it shoul dbe 17 incehs of vacuum.
Was you check engine light flashing? If so, too much raw fuel getting in converter overheating it.

Dec 20, 2009 | 2004 Ford Ranger

1 Answer

Gas milege falling and loud squeal and rattle


Most likely your honeycomb is broken loose inside your catalytic converter.If it breaks into smaller pieces it can start to restrict the exhaust outout & make starnge sounds like a turbo winding up.I would replace the convereter & go from there.Hope this helps

May 16, 2009 | 1996 Oldsmobile Bravada

1 Answer

Code reading


replace the serp belt and check idler and tentioner pullys. serp belts make noise after antifreeze or oil has been on them. good luck

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