Drive line vibration

[Robert5]

Experiencing a drive line vibration in overdrive between 1400 & 1600 rpm ( high torque low rpm ) when under a load.
Backing of throttle a small amount or shifting out of overdrive will eliminate the shudder. Steady bearing, u-joints
and t/box mount have been replaced. Truck has 375,00kms ( 200,000+miles ) Any thoughts appreciated.
2003 3500 single wheel 4x4 48RE HO engine. Tires are 315's BFG that have been used since new. Rest of truck is stock.

 

[TWebster]

Might check the front drive shaft, and more specifically, the double cardigan joint for the front driveline. Both driveshafts are driven all the time----the front from the front diff when not engaged

 

[cerberusiam]

Might not be driveline, you might be slipping the TCC if you haven't upgraded the transmission.

 

[Robert5]

Might not be driveline, you might be slipping the TCC if you haven't upgraded the transmission.

Does not vibrate under full throttle only as stated. Could this still be problem or something else in trans?

 

[cerberusiam]

Does not vibrate under full throttle only as stated. Could this still be problem or something else in trans?

Normally it won't at high rpm and\or throttle, the pressures are generally high enough it usually holds. The situation you describes at 1400-1600 rpms partial throttle and high TQ is where the slip more often occurs.

 

[cerberusiam]

Does not vibrate under full throttle only as stated. Could this still be problem or something else in trans?

Normally it won't at high rpm and\or throttle, the pressures are generally high enough it usually holds. The situation you describes at 1400-1600 rpms partial throttle and high TQ is where the slip more often occurs.

 

[Robert5]

Thanks for the info cerberusiam, will follow up and have trans checked.