GMC Tech 2, User Manual

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SECTION VIIC SERVICE PROGRAMMING SYSTEM
2005 Tech 2 User’s Guide VII - 45
STEP 3: Transfer Data from the Tech 2 to the Control Module
3.1 With the Tech 2 and vehicle both off, connect the Tech 2 to the vehicle DLC ( Figure III-23 ).
3.2 Power on the Tech 2. At the Tech 2 title screen, press [ENTER].
3.3 Turn the vehicle ignition to the “on” position (engine off).
3.4 At the Tech 2 Main Menu, select Service Programming System ( Figure VIIC-13 ).
3.5 Select "F1: Program ECU" on the Tech 2 ( Figure VIIC-22 ). The Tech 2 will display the new
programming data — VIN and software numbers ( Figure VIIC-23 ). Verify, then select the soft key
Continue. The Tech 2 will display the "Programming in Progress - Downloading calibration file"
screen (
Figure VIIC-24 ).
3.6 When the transfer is complete, the Tech 2 will display the message “Programming Was Successful.”
Press the Continue soft key to exit the program. Turn the vehicle ignition off first, then turn the Tech
2 off and disconnect it from the vehicle.
Be sure to verify successful reprogramming. Refer to the recommendations on the next page .
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