buddha845

iTrader: (3)

Tried a search for this one but no dice.

Ive got a very strange rattling noise, it comes and goes at low speed/rpm its only there for maybe 1-3 seconds. it'll show up when i accelerate from a stop in daily driving, and after low speed turns but i would assume its the accelerating thats causing it. Its not every time tho, id say about 50% of the time.

Its a pretty rapid rattle, sounds more like metal on metal chatter. I noticed my sisters '02 trailblazer makes the same exact noise so i thought it would be some crappy GM part that a few people have had experience with. Any ideas?

Boodyrider

iTrader: (2)

Put it on a lift and run it. look for exhaust parts touching body parts first.

PAGregSS

iTrader: (10)

Could be a catalytic convertor breaking up.

kraut187

iTrader: (2)

I've had this exact same problem for well over a year now. Luckily, it doesn't seem to have any adverse affect. I'm pretty sure it's not the exhaust and I have no cats. It persisted through a clutch swap as well, so I'm pretty sure it's not clutch chatter. I'm beginning to wonder if it might be a busted motor mount or something like that.

kraut187

iTrader: (2)

TTT I'd like to know if anyone has any input on this. Thanks

buddha845

iTrader: (3)

so i figured out that with the cutout closed the noise is much, much quiter. its barely noticeable unless you hear it echo off of a car next to you. made me lean towards cats too but you dont have em so im still stumped as to what it is lol, i just know its very very quiet with the cutout closed as opposed to the horrendous rattle with the cutout open

PAGregSS

iTrader: (10)

Do you have an electric cutout? If so, the next time you open the cutout all the way and you hear the noise, try closing it just a hair. My McCord electric cutout would rattle a bit when it was all the way open.

buddha845

iTrader: (3)

nah, its manual. still havent found the source of the noise tho

JD_AMG

Check the 02 sensors and make sure they are tight.