GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J 8001 Dial Indicator Set
    • J 45019 Flange and Pinion Cage Remover

    Object Number: 1237784  Size: SH
  1. Remove 1 pinion cage bolt and install a long bolt from J 45019 .
  2. Install J 8001 as shown in order to check backlash. Position the tip of the dial indicator above the center line of the flange bolt holes.

  3. Object Number: 1332405  Size: SH
  4. Check the axle ratio on the axle tag.
  5. Determine which flange is used. The 105 mm flange (1) is used with ratios 2.73, 3.23 and 3.42. The 96 mm flange (2) is used with ratios 3.42, 3.23 and 3.91. The 86 mm flange (3) is used with ratio 3.73.
  6. For backlash specification, refer to Rear Axle Specifications .