C 2500 Truck 2WD V8-5.7L VIN R (1997)
Engine Control Module: Service and Repair
EEPROM Programming
CAUTION: The ignition should always be "off" when installing or removing the Vehicle Control Module (VCM) connectors.
1. Take the following steps in order to set-up for the EEPROM Programming.
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Battery is charged.
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Ignition is "ON."
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Battery/cig. lighter Connection secure.
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Data Link Connector (DLC).
2. Refer to up-to-date Techline terminal/equipment user's instructions.
3. If Vehicle Control Module (VCM) fails to program, do the following:
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Check all VCM connections.
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check Techline terminal/equipment for latest software version.
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Try again to program the VCM. If it fails again, replace the VCM. Refer to VCM replacement.
4. Perform the Idle Air Control (IAC) valve reset procedure with the scan tool. use misc. test.
5. For a functional check perform one of the steps:
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Use the Techline terminal and equipment in order to perform the On-Board Diagnostic (OBD) System Check
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Refer to Powertrain OBD System Check. See: Powertrain Management/Computers and Control Systems/Testing and Inspection
