gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Engine Control Module Programming and Setup|Page 6181 > < Engine Control Module Programming and Setup|Page 6179
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IMPORTANT:  DO NOT turn OFF the Off-Board Programming Adapter if the programming procedure is interrupted or unsuccessful. Ensure the
control module and the Off-Board Programming Adapter connections are secure and the Techline(TM) operating software is up to date. Attempt to
reprogram the control module. If the control module cannot be programmed, replace the control module. Refer to Engine Control Module (ECM)
Replacement.

20. With the Tech 2(TM), select Program.
21. After the download is complete, exit Service Programming.
22. Turn OFF the Off-Board Programming Adapter.

Engine Control Module Programming and Setup|Page 6181 > < Engine Control Module Programming and Setup|Page 6179