GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2010 🢒 Sierra Denali 🢒 Transmission 🢒 Automatic Transmission - Allison 🢒 Control Valve Body Assembly Installation

    Object Number: 1235585 Size: SH

    Note: Installing a lint-free cloth into the park pawl cam guide hole prevents 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 case is facing up.

    3. Object Number: 1581037 Size: SH
  3. Align the manual valve pin (3) with the manual selector valve (2).
  4. Rotate the manual valve pin (3) until the pin can be installed into the manual selector valve.
  5. Install the manual valve pin (3) into the manual selector valve (2).
  6. Install the manual selector valve into shift valve body (1).

    7. Object Number: 1581034 Size: SH

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

  7. Rotate the detent lever/internal mode switch (IMS) assembly to the fullest counter-clockwise position.
  8. Align the control valve assembly with the transmission case while installing the manual valve pin (2) into the detent lever/IMS assembly (1).

    9. Object Number: 1581033 Size: SH
  9. Align 2 control valve assembly locating pins (1) with the locating pin holes in the transmission case.
  10. Install the control valve body assembly (2) onto the transmission case.

    11. Object Number: 1665611 Size: SH
  11. Remove the lint-free cloth (1) from the park pawl cam guide hole.

    12. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1633290 Size: SH
  12. Install 11 control valve assembly bolts (1) and 4 control valve assembly bolts (2). Tighten the bolts to 12 N·m (108 lb in).

    13. Object Number: 1581029 Size: SH
  13. Install the manual shift shaft detent spring (2) onto the main valve body (4).
  14. Make sure the pin of the manual shift shaft detent spring (2) engages the slot of the IMS and the detent spring roller rests on the detent lever (3).
  15. Install 2 manual shift shaft detent spring bolts (1). Tighten the bolts to 12 N·m (108 lb in).