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 MANUALSCHEVROLET2000CAB & CHASSIS K2500, 7.4 J, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 122 (ENGINE CONTROLS - SELF-DIAGNOSTICS - 4.8L, 5.3L & 6.0L)DIAGNOSTIC TESTSDTC P1441: EVAP SYSTEM FLOW DURING NON-PURGECONDITIONS FOR RUNNING DTC
2000 Chevrolet Cab & Chassis K2500, 7.4 J, Automatic
Conditions For Running DTC
2000 Chevrolet Cab & Chassis K2500, 7.4 J, AutomaticSECTION Conditions For Running DTC
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, and 2002 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
- DTCs P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0125, P0440, P0442, P0443, P0446, P0449, P0452, P0453, P1111, P1112, P1114, P1115, P1120, P1220, or P1221 are not set.
- The ignition voltage is between 10-18 volts.
- The Barometric (BARO) pressure is more than 75 kPa.
- The fuel level is between 15-85 percent.
- The Engine Coolant Temperature (ECT) is between 39-86°F (4-30°C).
- The Intake Air Temperature (IAT) is between 39-86°F (4-30°C).
- The start up ECT and IAT are within 16°F (9°C) of each other.
- The Vehicle Speed Sensor (VSS) is less than 75 MPH.
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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.