![]() ![]() ![]() You connect the Tech 2 to the vehicle and download the module information that you want to program. The go-between method is for when you can’t bring the computer into the vehicle and uses the gm Tech2 scanner as a go-between. ***the reprogramming of an ECU that was not exchanged or the replacement/programming of a new ECU On the screen ‘Select Diagnostic Tool and Programming Process’ (See picture below) make a selection for.Select the icon ‘Service Programming System’ (Fig.Connect Tech 2 to the PC switch on Tech 2.That is, the data are directly downloaded from the PC to the ECU in the vehicle.Īlthough the GM Tech 2 is still necessary in the mode, the data entry and the download control is done directly at the pc. Altogether, the method is faster, and it is recommended when a pc with TIS2000 software is within 3m of a vehicle. This is the fastest and easiest way to do it. The pass-through is to use with a laptop in the vehicle and it just uses the Tech 2 as the connection between. One is pass-through and the other is using the Tech 2 as a go-between. If you’re trying to program a module, there are two methods. ![]()
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