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 G3500, VAN PASSENGER EXTENDED, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 4 (ENGINE CONTROLS SELF-DIAGNOSTICS - 5.0L & 5.7L)INSPECTION/MAINTENANCE PROCEDURESINSPECTION/MAINTENANCE AIR SYSTEM SET PROCEDUREPROCEDURE
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 F
Inspection/Maintenance Air System Set Procedure: Procedure
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 FSECTION Procedure
WARNING: This page is about a different variant/trim than selected.
- Perform INSPECTION/MAINTENANCE SYSTEM CHECK . After performing inspection/maintenance system check, go to next step.
- Verify vehicle is within enable criteria. Turn off all of accessories. Start engine and allow idle for 2 minutes. Accelerate at part throttle to 45 MPH. Maintain this speed for 3 minutes, or until I/M SYSTEM STATUS indicator updates to YES. Using scan tool, review I/M SYSTEM STATUS display. If AIR system status updated to YES, go to step 5. If AIR system status did not update to YES, go to next step.
- Using scan tool, observe DTC information. If scan tool indicates any failed DTCs, see DIAGNOSTIC TROUBLE CODE INDEX table under DIAGNOSTIC TROUBLE CODE DEFINITIONS. If scan tool does not indicate any failed DTCs, go to next step.
- Using scan tool, observe NOT RAN SINCE CODE CLEARED display to determine if DTCs P0410, P0415 and P0416 have run. For those DTCs that have not run, see CODE ENABLE CRITERIA under appropriate DTC under DIAGNOSTIC TESTS. Operate vehicle to meet code enable criteria until DTC(s) runs. Using scan tool, observe I/M SYSTEM STATUS display. If catalyst system status updated to YES, go to next step. If catalyst system status did not update to YES, see DIAGNOSTIC AIDS .
- Using scan tool, observe emission related DTC portion of I/M SYSTEM STATUS display. If scan tool indicates any emission related DTCs, see DIAGNOSTIC TROUBLE CODE INDEX table under DIAGNOSTIC TROUBLE CODE DEFINITIONS. If scan tool does not indicate emission related DTCs, system is okay.
WARNING:
Road test vehicle under safe conditions and while obeying all traffic laws. Do not attempt any maneuvers that could jeopardize vehicle control. Failure to adhere to these precautions could lead to serious personal injury and vehicle damage.
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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.