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Home >> GMC >> 2002 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Removal, Overhaul & Installation - 6.5L Diesel >> Computerized Engine Controls >> Powertrain Control Module >> Notes

Powertrain Control Module: Notes

NOTE: Before replacing PCM, carefully inspect all wiring and control components. Failure to test for short circuits may result in repeated PCM failure due to shorts and Quad-Driver failure. To prevent internal damage to PCM, ensure ignition switch is in OFF position when connecting or disconnecting PCM harness connectors or any electrical components.
NOTE: If the diagnostic procedures call for the Powertrain Control Module (PCM) to be replaced, then programming the EEPROM in the PCM will be necessary. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION.