High Flank Contact Pattern: Correction
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet 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, 9.5/9.5LD, and 11.5 Inch Axles) or Pinion Depth Adjustment (10.5 Inch Axle) .