GoHardZ28

That pretty much sums up the problem. I can hear the thumping really well when I am slowing down from a higher speed. I first heard it when I was getting off the interstate at about 75. It sounds like the noise is from a rotational part. I just had the rear brakes and the water pump done... Any ideas?

2001 Camaro Z28
M6

jsteele90

iTrader: (13)

check your lugnuts

chevymec

iTrader: (19)

Check you tires for flat spots or irregular wear.

ls1whip

iTrader: (1)

flat spots would cause a vibration and noise all the time getting higher or lower with speed its not that. can you feel it or is it more or less a sound? if its a sound then its not gonna be your lug nuts or flat spots either, do you know if they surfaced your rotors when your brakes where done?

Slvr00Bird

iTrader: (2)

Thumping from rotors?!

Do you have an aftermarket torque arm? mods to the car?

LaBLKv6Z

iTrader: (13)

Could be a worn TA bushing if you're still running the stocker.

ls1whip

iTrader: (1)

i didn't say thumping from rotors did i lol? i just asked if he had his rotors turned if they did a crappy job turning his rotors with new pads then yes they could cause a vibration under braking thumping no. thats why i asked if he could feel the thumping or if it was more of a noise.

bottom line man if your having issues after you took it to a shop and the issues weren't there before take it back and have them look at it its there job to have your car leave the shop better than when it arrived.

GoHardZ28

Thanks for all the help guys!
This where I am at right now.
Tires are brand new...so no flat spots
Tires are properly inflated and holding air
Lugs are on nice and tight

Now it is something with my rear brakes. The noise only happen when I am braking. I did a test today... got the car up to 80 and slowly applied the brakes. The nosie came when I hit the brakes and the nosie left when I got off the brakes. I had new pads put on and the rotors where re-surfaced.

So I am guessing the guy F'd up my rotors??

GoHardZ28

Mods:
UMI non-adj LCA
UMI on car adj PHR
UMI bolt on SFC
UMI LCA relocation
SLP Bilstiens
Strano Springs

I am going to have the wheels balanced and the brakes check tomorrow.

joshp14

iTrader: (5)

if it only does it when you are on the brakes then yes its probably brake related. Did it do it before the brake job?

DWake

iTrader: (1)

May be torque arm bushing. When I bought my car the guy who previously owned it told me that the car was thumping like that and he changed it and it stopped.

GoHardZ28

So the problem is the rotors.
The guy did a horrible job on the re-surfacing.

garytech

$$$$ saver. My wife came home and said noise in car. I went for drive and sure enough thumping when slowing down. Visual inspection showed nothing. Internet search said check lugs nuts. Front driver side loose. Tightened and noise went away. Thanks for posting these ideas.