DEFINITION: When the vehicle is accelerating at low speed a shudder occurs.

The yoke retainer strap bolts are loose or missing.

Replace or tighten the yoke retainer strap bolts to specifications. Refer to Fastener Tightening Specifications .

The driveline joint angle is excessive or incorrectly set.

Determine if the driveline angle is incorrect and correct as necessary. Refer to Diagnostic Starting Point - Vibration Diagnosis and Correction .

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

Replace the universal joint. Refer to Universal Joint Replacement - External Snap Ring .