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.
Conditions For Running DTC
2002 Chevrolet Silverado 1500 HD, RWDSECTION Conditions For Running DTC
WARNING: This page is about a different car, the 2002 GMC Sonoma and 2002 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
- DTCs P0105, P0107, P0108, P0112, P0113, P0117, P0118, P0122, P0123, P0169, P0171, P0172, P0178, P0179, P0201-P0204, P0300, P0301-P0304, P0336, P0440, P0446, P0452, P0453, P0506, P0507, P0601, P0602, or P1441 are not set.
- The ignition 1 voltage is greater than 10 volts.
- The engine run time is less than 4.25 minutes.
- The Intake Air Temperature (IAT) is less than 113°F (45°C).
- The start up Engine Coolant Temperature (ECT) and start up IAT are less than 113°F (45°C).
- The difference between ECT and IAT is less than 45°F (7°C).
- The fuel level is greater than 10 percent.
- The HO2S voltage at start up must be between 395-495 millivolts.
- The fuel ethanol composition is less than 15 percent.
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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.