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Home >> Chevrolet >> 2002 >> C3500 HD 6.5 F, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 6.5L >> Diagnostic Information and Procedures >> DTC P0601, P0602, P0603, P0604, P0605, P0606, P0607, P1600, P1621, P1627, P1680, P1681, or P1683 >> Test Description

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. 2. A DTC P0602 indicates the PCM is not programmed.
  2. 4. Attempt to program the PCM. If the PCM fails to program a second time, replace the PCM.
Fig 1: DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681 Or P1683
G01599787Courtesy of GENERAL MOTORS CORP.
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