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 MANUALSCHEVROLET2025TRAILBLAZER ACTIV, FWDREPAIR AND DIAGNOSISENGINE MECHANICALCOOLING SYSTEM (MECHANICAL)ENGINE HEATING AND COOLING SYSTEMREPAIR INSTRUCTIONSENGINE COOLANT CONTROL VALVE LEARNWITH SCAN TOOL
2025 Chevrolet Trailblazer ACTIV, FWD
With Scan Tool
2025 Chevrolet Trailblazer ACTIV, FWDSECTION With Scan Tool
- Ignition - On / Vehicle - In Service Mode
- Select: Module Diagnostics
- Select: Engine Control Module-Powertrain Control Module
- Select: Configuration/Reset Functions
- Select: Learn Functions
- Select: Engine Coolant Control Valve Learn
- Follow the instructions on the scan tool. - The procedure will complete within 10 s
RENDER: 1.0x
NO RELATED
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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.