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 MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 199 (ENGINE CONTROLS SELF-DIAGNOSTICS)DIAGNOSTIC TESTSDTC P0171: FUEL TRIM SYSTEM LEANCONDITIONS FOR RUNNING DTC
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8
Conditions For Running DTC
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Conditions For Running DTC
WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
- DTCs P0101-P0103, P0107, P0108, P0121- P0123 , P0130-P0135, P0137, P0138, P0140, P0141, P0201-P0206, P0300, P0401, P0403-P0405, P0410, P0440, P0442, P0446, P0506, P0507, P1404, or P1441 not set.
- Engine Coolant Temperature (ECT) is 68-230°F (20-110°C).
- Intake air temperature is 64-158°F (18-70°C).
- Manifold Absolute Pressure (MAP) is 15-105 kPa.
- Vehicle speed is less than 82 MPH.
- Engine speed is 550-4000 RPM.
- Barometric (BARO) pressure is more than 70 kPa.
- Mass Airflow (MAF) is 2.8-150.0 g/s.
- Fuel level is more than 10 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.