GMC MDI 2, User Manual, Page: 4 / 33

Multiple Diagnostic Interface 2 User Guide
4
Customer Support Overview
To obtain assistance with your TIS software, contact the ACDelco Aftermarket Support Center.
Before Calling
Before making a call for ACDelco Aftermarket support, be sure to have the following information
ready:

Business name, address, ACDelco TDS Login ID, and the technician’s Telephone
number

Tell when the problem occurred

List any error messages

Give vehicle entry information
Making the Call
The ACDelco Aftermarket Support Center telephone lines operate from 8:00 AM to 8:00 PM
(Eastern Standard Time) Monday through Friday.
In the United States and Canada to contact Customer Support, dial:
1-888-212-8959