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HOMESERVICE MANUALSCHEVROLET2000CAB & CHASSIS C2500, 6.5 F, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1041 (ENGINE CONTROLS - 6.6L (LLY) (TROUBLESHOOTING & DIAGNOSIS))TROUBLESHOOTINGINSPECTION/MAINTENANCE (I/M) COMPLETE SYSTEM SET PROCEDURECONDITIONS FOR RUNNING
2000 Chevrolet Cab & Chassis C2500, 6.5 F, Automatic

Conditions for Running

2000 Chevrolet Cab & Chassis C2500, 6.5 F, AutomaticSECTION Conditions for Running
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Cold start

  • The battery voltage is between 11-18 volts.
  • The engine coolant temperature (ECT) is between 60-96.75°C (140-206.2°F).
  • The intake air temperature (IAT) is more than 5.25°C (41.5°F).
  • The barometric pressure (BARO) is more than 74 kPa.
Inspection/Maintenance (I/M) Complete System Set Procedure

Step Action Values Yes No
1 Did you perform the Inspection/Maintenance (I/M) System Check? - Go toStep 2  Go to Inspection/Maintenance (I/M) System Check 
2
  1. Ensure the vehicle is within the Conditions for Running specified in the supporting text.
  2. Turn OFF all of the accessories, e.g., A/C, blower fan, etc.
  3. Set the vehicle parking brake.
  4. Verify the transmission is in PARK for automatic transmissions and NEUTRAL for manual transmissions.
  5. Start and allow the engine to idle for the specified time.
  6. Observe the I/M System Status with a scan tool.
Did both of the I/M System Status indicators update to YES?		 2 minutes Go to Step 3  Go to the I/M System Set Procedure for the systems that did not update to YES
3 Observe the Emission Related DTC portion of the I/M System Status with a scan tool.
Does the scan tool indicate any Emission Related DTCs set?		 - Go to Diagnostic Trouble Code (DTC) List System OK
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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.