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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

Diagnostic Procedures

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  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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