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Home >> Chevrolet >> 2025 >> Trailblazer ACTIV, FWD >> Repair and Diagnosis >> General Information >> Reset Procedures >> Programming And Setup - All Systems >> Repair Instructions >> K71 Transmission Control Module: Programming and Setup (9T45 (M3F)) >> Replace and Program Control Module

Replace and Program Control Module

To program a replacement K71 Transmission Control Module (TCM), perform the following procedure:

  1. Replace the K71 Transmission Control Module.
  2. Install EL-49642  SPS programming support tool
  3. Access the Service Programming System (SPS) and follow the on-screen instructions.
  4. Perform one of the following SPS Programming functions:
      NOTE:

      If both controller options below are listed, select K71 Transmission Control Module

    • K20/K71 Engine and Transmission Control Modules and follow the on-screen instructions
    • K71 Transmission Control Module and follow on-screen instructions.
  5. Perform the Refresh Characterization Data at the MCVM Characterization procedure, follow the on-screen instructions.
  6. Perform the Vehicle Setup, follow the on screen instructions.
  7. With a scan tool, clear DTCs from the K71 Transmission Control Module.
  8. Perform the scan tool configuration/reset function: Transmission Service Fast Learn - If available
    NOTE:

    If the transmission fluid temperature is not between 75 to 85°C (167 to 185°F) the scan tool will not allow the procedure to be performed.

  9. Ignition OFF for 2 minutes.
  10. All OK.