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HOMESERVICE MANUALSCHEVROLET2020TAHOE LS, RWD, GAS/ETHANOLREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESPROGRAMMING AND SETUPREPAIR INSTRUCTIONSK71 TRANSMISSION CONTROL MODULE: PROGRAMMING AND SETUP (8L90 (M5U))PROGRAMMING AN EXISTING OR NEW CONTROL MODULE
2020 Chevrolet Tahoe LS, RWD, Gas/Ethanol

Programming an Existing or New Control Module

2020 Chevrolet Tahoe LS, RWD, Gas/EthanolSECTION Programming an Existing or New Control Module

To program an existing or new control module, perform the following procedure:

  1. Install the special tool: EL-49642 SPS Programming Support Tool
  2. Ignition - On/Vehicle - In Service Mode
  3. Access SPS and follow the on-screen instructions for the control module: K71 Transmission Control Module
    1. Select - Programming
    2. Select - MCVM Operations - If applicable
    3. Ignition/Vehicle - Off - For greater than 2 min
    4. Select - Setup - Follow the on-screen instructions.
  4. Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to No.
  5. All OK.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.