Drive Side Heel - Coast Side Heel Contact Pattern: Correction
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Decrease the backlash. Move the ring gear closer to the pinion by adjusting the side bearing shim thickness or the adjuster sleeve(s). Refer to BACKLASH ADJUSTMENT (ALL EXCEPT 9.75 INCH AXLE) or BACKLASH ADJUSTMENT (9.75 INCH AXLE) .