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 MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 92 (ENGINE CONTROLS - SELF-DIAGNOSTICS - 6.6L DIESEL)DIAGNOSTIC TESTSDTC P0116: ECT SENSOR PERFORMANCECONDITIONS FOR CLEARING MIL/DTC
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Conditions For Clearing MIL/DTC
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Conditions For Clearing MIL/DTC
WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- The control module turns OFF the MIL after 3 consecutive drive trips when the test has run and passed.
- A history DTC will clear if no fault conditions have been detected for 40 warm-up cycles. A warm-up cycle occurs when the coolant temperature has risen 40°F (22°C) from the startup coolant temperature and the engine coolant reaches a temperature that is more than 158°F (70°C) during the same ignition cycle.
- Use a scan tool in order to clear the DTCs.
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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.