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Home >> Chevrolet >> 2003 >> Monte Carlo LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing - 3.4L >> Computerized Engine Controls >> Powertrain Control Module >> Notes
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Powertrain Control Module: Notes

CAUTION: To prevent damage caused by the improper probing of connector terminals, use the Connector Test Adapter Kit (J 35616-A) for any test that requires probing the following items:
  • The PCM harness connectors.
  • The electrical center fuse/relay cavities.
  • The component terminals.
  • The component harness connector.
NOTE: To identify circuits, see WIRING DIAGRAMS .

Poor power or ground connections can cause widely varying symptoms. For additional diagnostic and repair procedures, see INTERMITTENTS in TROUBLE SHOOTING - 3.4L ALERO, GRAND AM, IMPALA & MONTE CARLO article.

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