C 3500 Truck 2WD V8-393 6.5L DSL Turbo (1992)
4. This test checks the PCM/TCM's ability to ground or control shift solenoid "A".
Diagnostic Aids:
Check all connections especially those at the transmission pass-thru connector. See: Transmission Control Systems/Testing and
Inspection/Symptom Related Diagnostic Procedures/Intermittents