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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 1 (ENGINE CONTROLS SELF-DIAGNOSTICS - 6.5L)DIAGNOSTIC TESTSDTC P0216: INJECTION TIMING CONTROL SYSTEMDIAGNOSTIC PROCEDURES
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8

Diagnostic Procedures

2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Diagnostic Procedures
WARNING: This page is about a different variant/trim than selected.
  1. Perform powertrain diagnostic system check. See POWERTRAIN DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM. After performing diagnostic system check, go to next step.
  2. Start and warm engine to normal operating temperature. Using scan tool, scan injection timing at idle and at 1500 RPM. If scan tool displays a difference of 5 degrees between actual and desired injection time at idle and at 1500 RPM, go to step  4. If scan tool does not indicate a difference of 5 degrees between actual and desired injection time at idle and at 1500 RPM, go to next step.
  3. Problem is intermittent. If no additional DTCs are set, see DIAGNOSTIC AIDS . If any additional DTCs are set, perform appropriate DTC test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .
  4. Turn ignition off. Disconnect PCM harness connector C2. Measure resistance between PCM harness connector C2, terminals A7 (Red/Black wire) and A8 (Tan/Black wire). See Figure or Figure . If resistance is 10-60 ohms, go to next step. If resistance is not 10-60 ohms, go to step  9.
  5. Measure resistance between PCM harness connector C2, terminals A9 (Orange/Black wire) and A10 (Yellow/Black wire). If resistance is 10-60 ohms, go to next step. If resistance is not 10-60 ohms, go to step  10.
  6. Reconnect PCM harness connector. Disconnect injection timing stepper motor harness connector. Start and operate engine at idle. Using scan tool, command time set on. Using DVOM, check for a varying voltage between a known-good ground and each terminal of injection timing stepper motor harness connector. See Figure. If voltage varies, go to next step. If voltage does not vary, go to step  12.
  7. Turn ignition off. Disconnect Crankshaft Position (CKP) sensor harness connector. Measure resistance between CKP sensor harness connector terminals "A" and "C". See Figure. If resistance is 950-1050 ohms, go to next step. If resistance is not 950-1050 ohms, go to step  13.
  8. Reconnect CKP sensor harness connector. Check if injection timing is set correctly. Check for a sheared camshaft key. Repair as necessary. After repairs, go to step  17. If no problems are found, go to step  15.
  9. Disconnect stepper motor harness connector. Check for open circuit in stepper motor harness connector terminals "A" (Tan/Black wire) and "D" (Red/Black wire). Repair as necessary. After repairs, go to step  17. If circuits are okay, go to step  11.
  10. Disconnect stepper motor harness connector. Check for open in stepper motor harness connector terminals "B" (Orange/Black wire) and "C" (Yellow/Black wire). Repair as necessary. After repairs, go to step  17. If circuits are okay, go to step  11.
  11. Check for poor connections at injection timing stepper motor. Repair as necessary. After repairs, go to step  17. If connections are okay, go to step  15.
  12. Turn ignition off. Check non-varying injection timing stepper motor circuit for short to ground, short to voltage or for poor connection at PCM. Repair as necessary. After repairs, go to step  17. If circuit and connection is okay, go to step  16.
  13. Check CKP sensor harness connector circuits for short to ground. Repair as necessary. After repairs, go to step  17. If circuit is okay, go to next step.
  14. Replace CKP sensor. Program PCM with new TDC offset. See appropriate ON-VEHICLE ADJUSTMENTS article. After repairs, go to step  17.
  15. Replace fuel injection pump. After replacement, new pump must be timed. See appropriate ON-VEHICLE ADJUSTMENTS article. After repairs, go to step  17.
  16. Replace PCM. Perform PCM relearn procedure. See POWERTRAIN CONTROL MODULE  under PROGRAMMING. After repairs, go to next step.
  17. Turn ignition on, with engine off. Using scan tool, clear DTCs. Start and warm engine to normal operating temperature. Select DTC, SPECIFIC, and then enter DTC P0216. Operate vehicle within the conditions for setting DTC. See CODE ENABLE CRITERIA . If scan tool indicates that this test ran and passed, go to next step. If scan tool does not indicate that this test ran and passed, go to step  2.
  18. Using scan tool, check for DTCs. If any undiagnosed DTCs are set, perform appropriate DTC test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no DTCs are set, system is okay.
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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.