Drive Side Toe - Coast Side Heel Contact Pattern
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Condition
The pinion depth is incorrect. The drive pinion is too close to the ring gear.
Correction
Adjust the pinion depth of drive pinion. Refer to Pinion Depth Adjustment (8.6, 9.25 Inch Axle) .