GM Service Manual Online
For 1990-2009 cars only

Vehicle Speed Sensor and Case Extension Removal 2WD Truck/Utility/Van Only

Removal Procedure

Tools Required

J 29837-A Output Shaft Support Fixture


    Object Number: 207618  Size: SH
  1. Remove the sensor retaining bolt (35).
  2. Remove the speed sensor (36) and O-ring seal (37).

  3. Object Number: 588762  Size: SH
  4. Remove the case extension bolts (32).
  5. Remove the case extension (31) and the case extension to case seal (30).
  6. Remove the output shaft sleeve (690) and the output shaft O-ring seal (691). Not all models use an output shaft sleeve (690) and O-ring seal (691).

  7. Object Number: 190179  Size: SH
  8. Install the J 29837-A .
  9. If the J 29837-A is not used, the output shaft (687) may fall free when the input carrier retaining ring is removed.

Vehicle Speed Sensor and Case Extension Removal 2WD Applications Only

Removal Procedure

Tools Required

J 29837-A Output Shaft Support Fixture


    Object Number: 207618  Size: SH
  1. Remove the sensor retaining bolt (35).
  2. Remove the speed sensor (36) and O-ring seal (37).

  3. Object Number: 588762  Size: SH
  4. Remove the case extension bolts (32).
  5. Remove the case extension (31) and the case extension to case seal (30).
  6. Remove the output shaft sleeve (690) and the output shaft O-ring seal (691). Not all models use an output shaft sleeve (690) and O-ring seal (691).

  7. Object Number: 190179  Size: SH
  8. Install the J 29837-A .
  9. If the J 29837-A is not used, the output shaft (687) may fall free when the input carrier retaining ring is removed.