Backlash Inspection and Adjustment: Notes

WARNING: This page is about a different car, the 2004 GMC Safari and 2004 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 8001: Dial Indicator Set
J 25025-1: Dial Indicator Stand. See Special Tools and Equipment .
J 34047: Gear Lash Gauge. See Special Tools and Equipment .
J 33792: Side Bearing Adjuster Wrench. See Special Tools and Equipment .
J 42213: Adjuster Sleeve Socket. See Special Tools and Equipment .

Slowly turn the J 33792 clockwise until the right differential adjuster nut sleeve contacts the differential case bearing.

Fig 1: Installing J 33792 On Differential Bearing Adjuster Nut
Courtesy of GENERAL MOTORS CORP.
Install the J 42213 to the left differential adjuster nut sleeve.
Slowly turn the J 42213 clockwise until the left differential adjuster nut sleeve contacts the differential case bearing.
Mark the location of the adjuster nut sleeves in relation to the carrier halves.
Ensure that the notches in the adjusting sleeves can be counted when turned.
Using the J 33792 , turn the right differential adjuster nut sleeve out two notches.
Using the J 42213 , turn the left differential adjuster nut sleeve in 1 notch.
Rotate the pinion several times in order to seat the bearings.