Chevrolet Trax Owners & Service Manuals

Chevrolet Trax: Manual shift shaft and seal replacement

Chevrolet Trax (2013-2022) Workshop Manual / Transmission / Automatic Transmission - 6T40 (MH8 MHB) / Repair instructions - on vehicle / Manual shift shaft and seal replacement

Special Tools

  • DT-45201 Cooler Line Seal Remover
  • DT-49101 Seal Installer

For equivalent regional tools, refer to Special Tools .

Removal Procedure

  1. Remove the battery tray. Refer to Battery Tray Replacement .
  2. Remove the manual shaft and position switch assembly. Refer to Manual Shift Detent Lever with Shaft Position Switch Assembly Replacement.

Fig. 27: Identifying Seal Removal Tool
Fig. 27: Identifying Seal Removal Tool

  1. Remove the manual shaft seal (1) using DT-45201 remover.

Installation Procedure

  1. Install the manual shaft and position switch assembly. Refer to Manual Shift Detent Lever with Shaft Position Switch Assembly Replacement.

Fig. 28: Identifying Seal Installation Tool
Fig. 28: Identifying Seal Installation Tool

  1. Install the manual shaft seal (1) using DT-49101 seal installer.
  2. Install the battery tray. Refer to Battery Tray Replacement .

CONTROL SOLENOID VALVE AND TRANSMISSION CONTROL MODULE ASSEMBLY REPLACEMENT

Removal Procedure

  1. Remove the transmission control valve body cover. Refer to Control Valve Body Cover Replacement.

Fig. 29: Identifying Input Speed Sensor Electrical Connector
Fig. 29: Identifying Input Speed Sensor Electrical Connector

  1. Disconnect the output speed sensor electrical connector (2).
  2. Disconnect the shift position switch electrical connector (3).
  3. Disconnect the input speed sensor electrical connector (1).

Fig. 30: Locating Control Valve Body & Bolts
Fig. 30: Locating Control Valve Body & Bolts

  1. Remove the 3 control solenoid valve assembly bolts (1) M5 x 40.5.
  2. Remove the 12 control solenoid valve assembly bolts (2) M6 x 97.
  3. Remove the control solenoid valve assembly with transmission control module (3).

CAUTION: Use care when removing or installing the filter plate assembly. A broken or missing retaining tab may not adequately secure the filter plate to the control solenoid valve assembly, resulting in possible damage or contamination.

  1. Remove the control solenoid valve assembly filter plate (4). Discard the filter plate. It is not reusable.
  2. Inspect the pressure switch seals for damage or contamination. Replace the control solenoid valve assembly as necessary.
  3. Inspect the channel plate bolt pass through holes for damage or burnelling. Any damage could cause leaking. Replace as necessary.

Installation Procedure

Fig. 31: Locating Control Valve Body & Bolts
Fig. 31: Locating Control Valve Body & Bolts

CAUTION: Use care when removing or installing the filter plate assembly. A broken or missing retaining tab may not adequately secure the filter plate to the control solenoid valve assembly, resulting in possible damage or contamination.

  1. Install a NEW control solenoid valve assembly filter plate (4) to prevent fluid leaks past the fluid seals.
  2. Install the control solenoid valve assembly with transmission control module (3).
  3. Hand start the control valve body bolts (1, 2).

Fig. 32: Identifying Control Valve Body Bolt Tightening Sequence
Fig. 32: Identifying Control Valve Body Bolt Tightening Sequence

CAUTION: Refer to Fastener Caution .

  1. Secure the 12 control solenoid valve assembly bolts (2) M6 x 97 and tighten in sequence to 12 (106 lb in).
  2. Secure the 3 control valve body bolts (1) M5 x 40.5 and tighten in sequence to 7 (62 lb in).

Fig. 33: Identifying Input Speed Sensor Electrical Connector
Fig. 33: Identifying Input Speed Sensor Electrical Connector

  1. Connect the input speed sensor electrical connector (1).
  2. Connect the output speed sensor electrical connector (2).
  3. Install the transmission control valve body cover. Refer to Control Valve Body Cover Replacement.
  4. After repairs, refer to Control Module References for programming and set up procedures.
  5. Perform the transmission adaptive values learn. Refer to Transmission Adaptive Values Learn .

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