gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Wheel Bearing > < Wheels - Measuring Wheel Runout
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locations are shown in chart. With the dial indicator firmly in position, slowly rotate the wheel one revolution and record the TIR (Total Indicator
Reading). If any measurement exceeds these amounts, and if the vehicle should experience a vibration condition that wheel balancing will not correct,
the wheel should be replaced. Disregard any indicator jumps due to welds, paint runs, scratches, etc.

Wheel Runout Specifications

Steel Wheels

Aluminum Wheels

Radial Runout

.040"

.030"

Lateral Runout

.045"

.030"

Wheel Bearing > < Wheels - Measuring Wheel Runout