ElkySS

iTrader: (6)

i have replaced everything behind the transmission. wheels, torque arm, rear end, LS1 driveshaft (also had it balanced and installed new u-joints), sway bar, sway bar bushings, all rear suspension components (upgraded, not just replaced) and its still there. it happens only at 70+ mph. and mainly when foot is not on the gas. it does it in any gear or in neutral. is only changes with vehicle speed. you can still feel it when touching the pedal, but it gets worse and worse the closer you get to letting off completely. its most intense moment is at about 70-80 mph and then it kinda gets less but its still there. trans mount is poly but was doing it b4 that and didnt change. gm torque arm bushing. poly bushings on lower control arms and phb. please. this has been going on for the entire year iv owned it and the car was bone stock when i bought it. HELP ME!!!

SoxXpupPeT

iTrader: (34)

is it a manual ? maybe your fly wheel isnt flat

jarretthise

iTrader: (9)

was your tranny mount shot before??

ElkySS

iTrader: (6)

its a 6 speed and i had it surfaced when i put in my spec 2 but it changes with car speed not engine speed. and no there wasnt anything wrong with the old mount. my buddy just happened to give me an extra he had laying around

BLK,97,T/A,M-6

did the car have the vibration when you bought it?

ElkySS

iTrader: (6)

yup sure did

ElkySS

iTrader: (6)

o yea i forgot to mention. i put a whole new rear end in it w/ 35k miles on it but i had to reuse the original axles. i checked them over b4 i put them in. i couldnt see and bends or anything on either of them

BLK,97,T/A,M-6

Are the wheels bent maybe?

ElkySS

iTrader: (6)

its had 4 sets of wheels on it in a year. nothing changed. see who this is bugging me?

ElkySS

iTrader: (6)

its had 4 sets of wheels on it in the past year. nothing changed. see why this is bugging me so much?

BALLSS

check your driveline angle at transmission and pinion yokes

ElkySS

iTrader: (6)

ill try but i dont see how it could be off. i replaced the torque arm with no difference

AChotrod

iTrader: (17)

Motor mount?

Cliffo117

My friend is having a very similar problem with his ss Name is Jimmard

pureodyssey2

i have had this problem past 7 years it suxs i think my trans may have an intenal problem

LT1

iTrader: (1)

If its been lowerd I would check the pinion angle.

ElkySS

iTrader: (6)

nope never been lowered. i thought about it being a transmission problem. i posted this same thread in the manual transmission section a while back with no help there either. iv also posted this in suspension

BALLSS

...so have you checked the DL angle of tranny & pinion??

need to confirm that to rule it out...

ElkySS

iTrader: (6)

ill give it a shot when i get back to school and can put it on a drive on lift

meangreenformula

iTrader: (2)

what about the crank?