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Home >> Chevrolet >> 2001 >> Cavalier LS, 2.2 4 >> Repair and Diagnosis >> External Pages >> Different car >> Section 243 (Manual Transmission - GETRAG 5 Speed) >> Diagnostic Information and Procedures >> Diagnostic System Check - Manual Transmission >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2004 Pontiac Sunfire and 2004 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • Do not clear the DTC unless directed by a diagnostic procedure. Clearing the DTC will erase all Freeze Frame and Failure Records stored in PCM memory.
  • Use a scan tool that is known to function correctly. If necessary, test the scan tool on another vehicle.
  • Ensure the scan tool contains the most current file available.
  • The scan tool will display a loss of communication error message under the following conditions:
    • PCM power is interrupted
    • The ignition switch is turned OFF
    • The battery voltage level is very low
    • A poor connection at the diagnostic link connector (DLC)
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