GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 Yukon Denali 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4 Speed-MU4 🢒 Counter Gear Shaft Assembly Installation

Tools Required

    • J 36850 Transjel® Lubricant
    • J 8614-01 Countershaft Driven Gear Holder
    • J 35425 Rack Seal and Bearing Installer
    • J 34826 Hub Nut Socket - 36 mm
    • J 26900-6 Dial Caliper
    • J 7872 Magnetic Base Indicator Set
  1. Apply J 36850 to the underdrive sun gear inner thrust bearing (1).

    2. Object Number: 165826 Size: SH
  2. Install the underdrive sun gear into the underdrive thrust bearing. Install the assembly into the underdrive clutch drum (2).

    3. Object Number: 165827 Size: SH
  3. Install the underdrive sun gear into the underdrive clutch drum (2).
  4. Align the inner teeth of the underdrive clutch discs.

    5. Object Number: 165830 Size: SH
  5. Install the countershaft assembly (3) into the underdrive clutch assembly (1).

    6. Object Number: 165832 Size: SH
  6. Measure the countershaft assembly (1) depth using a J 26900-6 and a straight edge (A).
    7. • Measure the distance between the end of the countershaft and the bolt seat underdrive clutch drum support. Countershaft assembly installation depth should measure 30.3-32.5 mm (1.193-1.280 in).
    • If the countershaft assembly installation depth does not fall within specification, remove the countershaft assembly installation depth falls within specification.
  7. Apply J 36850 to the countershaft driven gear thrust bearing.

    8. Object Number: 165834 Size: SH
  8. Install the countershaft driven gear thrust bearing into transaxle case (1).

    9. Object Number: 165838 Size: SH
  9. Install the countershaft driven gear (1) onto the countershaft using a J 35425 and a hammer while supporting the countershaft.

    10. Object Number: 164516 Size: SH
  10. Install a J 8614-01 onto the countershaft locknut driven gear stationary during the countershaft locknut installation.

    11. Notice: Refer to Fastener Notice in the Preface section.

  11. Install the countershaft driven gear locknut onto the countershaft driven gear (1) using a J 34826 with a J 8614-01 .

    12. Tighten
    Tighten the countershaft driven gear locknut to 177 N·m (131 lb ft).

  12. Remove the J 8614-01 from the countershaft driven gear.

    13. Object Number: 165844 Size: SH
  13. Measure the countershaft assembly end play using a J 7872 .
    14. • Place the J 7872 on the end of the countershaft assembly and gently move the countershaft up and down while observing the J 7872 .
    • The countershaft assembly (1) end play should fall within 0.2-0.9 mm (0.008-0.035 in).
    • If the countershaft assembly does not fall within specification, remove the countershaft assembly and reinstall until the countershaft assembly end play is within specification.

    Object Number: 165847 Size: SH
  14. Stake the countershaft driven gear locknut (2).