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 DIAGNOSISBRAKESTRACTION CONTROLANTILOCK BRAKE SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC P18E2CIRCUIT/SYSTEM VERIFICATION
2025 Chevrolet Trailblazer ACTIV, FWD
Circuit/System Verification
2025 Chevrolet Trailblazer ACTIV, FWDSECTION Circuit/System Verification
- Ignition - On / Vehicle - In Service Mode
- Verify there are no DTCs set related to the following component/system: Serial Data
- If a related DTC is set
- Go to next step: If a related DTC is not set
- Clear the DTCs.
- Operate the vehicle within the Conditions for Running the DTC.
Verify the DTC does not set.
- If the DTC sets
- Ignition/Vehicle - Off
- Replace the component: K160 Brake System Control Module
- Operate the vehicle within the Conditions for Running the DTC.
- Verify the DTC does not set.
- If the DTC sets - Replace the component: K20 Engine Control Module
- Go to next step: If the DTC is not set
- All OK.
- Go to next step: If the DTC is not set
- 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.