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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 408 (Engine Control System Self-Diagnostics - 3.8L) >> Diagnostic Tests >> DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681, P1683 & P2610: Pcm Internal Microprocessor Integrity >> Test Description

Test Description

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 Pontiac Grand Prix, 2003 Pontiac Bonneville, 2003 Chevrolet Monte Carlo, 2003 Chevrolet Impala, and 2003 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers in the diagnostic procedures.

  1. 2

    A DTC P0602 indicates the PCM is not programmed.
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