Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2025TAHOE Z71, 6.2L ENG VIN LREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTMEMORY MODULESPROGRAMMING AND SETUP - ALL SYSTEMSREPAIR INSTRUCTIONSK20 ENGINE CONTROL MODULE: PROGRAMMING AND SETUPREPROGRAM CONTROL MODULE
2025 Chevrolet Tahoe Z71, 6.2L Eng VIN L
Reprogram Control Module
2025 Chevrolet Tahoe Z71, 6.2L Eng VIN LSECTION Reprogram Control Module
To reprogram an existing K20 Engine Control Module, perform the following procedure:
- Access the Service Programming System and follow the on-screen instructions for the control module: K20 Engine Control Module
- Ignition - On / Vehicle - In Service Mode
- Perform the SPS function:
- K20 Engine Control Module - Follow the on-screen instructions.
- K71 Transmission Control Module - Follow the on-screen instructions.
- Perform the scan tool function: Clear DTCs
- Perform the scan tool learn/reset function:
- Barometric Pressure Sensor Reset - If equipped
- Fuel Pressure Regulator Learn - If equipped
- Fuel Rail Pressure Relief Valve Learned Values Reset - If equipped
- Intake System Learned Values Reset - If equipped
- Throttle Body Idle Air Flow Compensation Reset
- Turbocharger Wastegate Learn - If equipped
- Turbocharger/Supercharger Boost Control Initial Position Learn - If equipped
- Ignition/Vehicle & All vehicle systems - Off
- Operate the vehicle within the conditions of the customer's concern.
NOTE:
If both controller options below are listed, select K20 Engine and K71 Transmission Control Modules.
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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.