Cadillac Workshop Service and Repair Manuals > Seville V8-273 4.5L (1989) > Powertrain Management | Computers and Control Systems | Relays and Modules - Computers and Control Systems | Body Control Module | Component Information | Testing and Inspection | Initial Inspection and Diagnostic Overview

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Body Control Module: Reading and Clearing Diagnostic Trouble Codes

Accessing and Reading Diagnostic Trouble Codes

Service Mode.

To enter diagnostic mode, proceed as follows:

Turn ignition "On".

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