One or more of the universal joints are worn or damaged.

Replace the propeller shaft assembly.

One or more of the universal joints have lost lubricant.

Replace the propeller shaft assembly.

Rubber coupling bolts loose at transmission or axle flange.

Tighten the bolts to specifications. Refer to Fastener Tightening Specifications .

Bolts loose at propeller shaft flange and coupling.

Tighten the bolts to specifications. Refer to Fastener Tightening Specifications .