High Flank Contact Pattern: Correction
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Increase the pinion depth. Move the pinion gear closer to the ring gear by increasing the pinion shim thickness. Refer to Pinion Depth Adjustment (8.6 Inch, 9.5 Inch, 11.5 Inch Axles) or Pinion Depth Adjustment (9.75 Inch Axle) or Pinion Depth Adjustment (10.5 Inch Axle) .