GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Avalanche - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 2ML70 🢒 Control Valve Upper Body Replacement

Removal Procedure
  1. Remove the control solenoid valve and transmission control module assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly Replacement .

    2. Object Number: 2063165 Size: SH
  2. Remove the manual shift detent spring bolt (4).
  3. Remove the manual shift detent spring (5).
  4. Remove the control valve upper body bolts (3).
  5. Remove the control valve upper body (2).
  6. Remove and discard the control valve upper body seal assembly (1).
  7. Remove and discard the fluid pump seals (6).

    8. Object Number: 2063166 Size: SH
  8. Remove the control valve body bolts (1).
  9. Remove the automatic transmission shift shaft position switch bracket (2).

    10. Object Number: 2063170 Size: SH
  10. Remove the control valve channel plate bolts (1).

    11. Object Number: 2063173 Size: SH
  11. Remove the control valve channel plate (1).

    12. Notice: Do not use the old spacer plate. Install a NEW spacer plate. Reusing an old spacer plate may cause internal transmission leaks and transmission damage.

  12. Remove the control valve body spacer plate with gasket assembly (2).
  13. Remove the fluid pump ball check valve (3) from the control valve upper body assembly (4).

Installation Procedure

    Object Number: 2063173 Size: SH
  1. Install the fluid pump ball check valve (3) to the control valve upper body assembly (4).

    2. Notice: Do not use the old spacer plate. Install a NEW spacer plate. Reusing an old spacer plate may cause internal transmission leaks and transmission damage.

  2. Install the control valve body spacer plate with gasket assembly (2).
  3. Install the control valve channel plate (1).

    4. Object Number: 2063170 Size: SH

    Important: Do not tighten the bolts at this time.

  4. Install by hand the control valve channel plate bolts (1).

    5. Object Number: 2063166 Size: SH
  5. Install the automatic transmission shift shaft position switch bracket (2).

    6. Important: Do not tighten the bolts at this time.

  6. Install by hand the control valve body bolts (1).

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

    Notice: Bolt torque sequencing is critical to the proper function of the control solenoid valve assembly. Failure to follow the required sequencing may result in transmission malfunction.


    Object Number: 2063171 Size: SH

    Notice: Bolt torque sequencing is critical to the proper function of the control solenoid valve assembly. Failure to follow the required sequencing may result in transmission malfunction.

  7. Torque the control valve channel plate bolts following the specified sequence.

    8. Tighten
    Tighten the bolts to 11 N·m (97 lb in).

    Notice: Refer to Fastener Notice in the Preface section.

    Notice: Bolt torque sequencing is critical to the proper function of the control solenoid valve assembly. Failure to follow the required sequencing may result in transmission malfunction.


    Object Number: 2063168 Size: SH

    Notice: Bolt torque sequencing is critical to the proper function of the control solenoid valve assembly. Failure to follow the required sequencing may result in transmission malfunction.

  8. Torque the control valve body bolts following the specified sequence.

    9. Tighten
    Tighten the bolts to 11 N·m (97 lb in).


    Object Number: 2066382 Size: SH
  9. Install NEW fluid pump seals (6).
  10. Install a NEW control valve upper body seal assembly (1).
  11. Install the control valve upper body (2).

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

    Notice: Bolt torque sequencing is critical to the proper function of the control solenoid valve assembly. Failure to follow the required sequencing may result in transmission malfunction.

  12. Install the control valve upper body bolts (3).

    13. Tighten
    Tighten the bolts to 11 N·m (97 lb in).

  13. Install the manual shift detent spring (5).
  14. Install the manual shift detent spring bolt (4).
  15. Install the control solenoid valve and transmission control module assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly Replacement .