K 2500 Truck 4WD V8-6.5L DSL Turbo VIN S (1998)
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Powertrain Control Module (PCM): Component Tests and General Diagnostics
Since the Powertrain Control Module (PCM) can have a failure which may affect only one circuit, following the diagnostic procedures can reliably tell
when a failure has occurred in the PCM. Refer to Diagnostic Tables. See: Computers and Control Systems/Testing and Inspection
If the problem is intermittent - This means that the problem is not present at the time the system is being checked. In this case, refer to Symptoms and
make a careful physical inspection of all portions of the system involved. See: Computers and Control Systems/Testing and Inspection