Telematics Control Module -J499-, Coding
Special tools and workshop equipment required
- Vehicle Diagnostic, Testing and Information System VAS 5051B
If the telematics control module was replaced, it must be coded and configured for the OnStar system.
Do not swap out any telematics control module between different vehicles! Each telematics control module has a special identification and an electronic serial number that matches the VIN. Using this data, the vehicle is identified by the OnStar Call Center and assigned to the respective customer account.
To diagnose, use the "Guided Fault Finding" function of the VAS 5051B. Before removing the telematics control module, while diagnosing with the VAS 5051B in the "replacing the J499 - telematics control module" function, the option will be offered to read out the coding and then reprogram it in the new telematics control module after it has been replaced.
-- Connect the VAS 5051B.
-- In VAS 5051B, select operating mode "Guided Fault Finding".
-- Using the Go To button, select "Functions/Component selection" and the following menu options in sequence:
- Body
- Electrical Equipment
- 01 - On Board Diagnostic (OBD) capable systems
- Telematics NAR
- Telematics NAR functions
- Control module, coding