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Home >> Cadillac >> 2001 >> Seville SLS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Self-Diagnostics - 4.6L >> Diagnostic Tests >> DTC P0602: Control Module Not PROGRAMED >> Diagnostic Procedures
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Diagnostic Procedures

  1. If powertrain diagnostic system check has already been performed, go to next step. If powertrain diagnostic system check has not been performed, go to POWERTRAIN DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM.
  2. Reprogram PCM using correct software. See PROGRAMMING . If DTC P0602 resets, go to next step.
  3. Replace PCM. Program replacement PCM. See PROGRAMMING .
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