I have a 2001 2nd gen with 305/70/16 new wheels centramatic balancers new drive shaft ,front wheel bearings ,axle joints u joints and transmission mount and it still at 44mph and 68 mph my teethl chatters the torque converter is a triple disk plz help thanks in advance the vibration fill like it in the floor.

 

two piece rear driveshaft or one piece? new drive shaft front or rear? any vibration felt with rear wheels off the ground running at 44mph in gear? Any wobble or run out in drive shaft? Did you disconnect front drive shaft and drive truck to see if vibration was still there? If two piece drive shaft did you try turning rear shaft 180 to front? Do you only get vibration while moving, no vibration felt in neutral or park?

 

1piece new rear and not as noticeable off the ground I took the front out no change

 

Try another driveshaft or have it checked for proper balance. Have all wheels road force balanced.

 

Steel wheels? Check for roundness...

U-joints aligned...

Rear drums, could be out of balance....

Bad tire?

 

New rear drive shaft aftermarket wheels,it has new disk brakes and rotors

 

Just thinkin out loud on this...

Try jacking each tire off the ground and place a 2x4 an 1/8 inch away and rotate a full turn if you get bored and see what you get.

 

Ok I'll try jacking it up thanks

 

Sixslug - do you have him looking for a bent axle or rim??

 

Dads 94 had a wierd vibration that picked up greatly over 70 mph. After 3 or 4 driveshafts, two sets of replacement tires,numerous balancings, brake drums and a complete rear end change out, it never ceased. Old mechanic in Kalispell says, did they ever check your wheels. Sure enough, two were over a 1/4" out of round. The other two were out about an 1/8'.

Chrysler "lost" the two worst ones. He finally bought a set of aftermarket alloys and the vibe stopped

Just trying to help, sometimes its the most obvious things that get overlooked..

 

I put new aftermarket wheels on sway bar links and front rotors lol it has a 2 inch leveling kit on it would that make a difference thanks guys

 

mine has this vibration and feels like under the floor chased it for years now and never got better or worse, guess it is like the loose steering throw lots of money at it and still won't be fixed

 

It shouldn't make a difference in rolling characteristics, sometimes rotors can be out of balance.

Finding two vibration speeds is telling me its a reciprocating event, I'd keep after the tires and driveline

 

Ok thanks how important is coil spring placement after 2 in lift

 

I did springs, tires, both drive shafts, carrier bearing, shocks, trackbar, 09 tie rods, energy bushings on sway bar, energy busgungs in front trailing arms, steering box and brace, still vibration under trans hump on highway and steering still loose I gave up

Also tried replacing the lower column bushing, waste of money imo