Adjustment of the Differential
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If it is necessary to replace the left side locking differential side gear cam unit and clutch disc assembly, the right side locking differential side gear and clutch disc assembly, or the thrust block, the entire differential must be adjusted. The differential is adjusted using selective thickness thrust washers between the clutch disc assemblies and the case and/or different selective thickness thrust blocks. When adjusting the differential, note the following:
- Assemble the clutch disc assemblies properly.
- Adjust the backlash and thrust block clearance in the following order:
- The left side gear backlash
- The right side gear backlash
- The thrust block clearance
NOTE:
Proper clearance between parts is critical to the operation of the unit.