GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 GMC C Sierra - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - Allison 🢒 Control Valve Assembly Installation

    Object Number: 1235585 Size: SH

    Important: The Installation of a lint-free cloth into the park pawl cam guide hole will help to prevent the manual valve pin from falling into the transmission.

  1. Install a lint-free cloth (1) in the park pawl cam guide hole in the transmission case (2).
  2. Position the transmission case so that the valve body face of the transmission is facing up.

    3. Object Number: 1332442 Size: SH
  3. Align the manual valve pin (3) with the manual valve (2).
  4. Rotate the manual valve pin until the pin can be installed into the manual valve.
  5. Install the manual valve pin (3) into the manual valve (2).
  6. Install the manual valve into the shift valve body (1).

    7. Object Number: 1216929 Size: SH

    Notice: Do not drop the manual valve when removing or installing the control valve assembly onto or from the transmission case.

  7. Align the control valve assembly with the transmission case while installing the manual valve pin (3) into the manual shift shaft detent lever (1).

    8. Object Number: 1332478 Size: SH
  8. Align two control valve assembly locating pins (1) with the locating pin holes in the transmission case.
  9. Install the control valve assembly (2) onto the transmission case.

    10. Object Number: 1332490 Size: SH
  10. Remove the lint free cloth (1) from the park pawl cam guide hole.

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


    Object Number: 1357911 Size: SH
  11. Install 11 control valve assembly bolts (1) and four bolts (2) into the modulated main pressure solenoid G valve body.

    12. Tighten
    Tighten the bolts to 12 N·m (108 lb in).


    Object Number: 1332471 Size: SH
  12. Install the manual shift shaft detent spring (2) onto the main valve body (4).
  13. Make sure the manual shift shaft detent spring (2) roller rests on the manual shift shaft detent lever (3).

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

  14. Install 2 manual shift shaft detent spring bolts (1).

    15. Tighten
    Tighten the bolts to 12 N·m (108 lb in).