Can you program the new switch with the Tech2?
Apparently, yes, if it's not a later model year. But you'd need TDS or TIS2WEB to get the newer programming.
I used TIS2000 to program a new/used ECM for my buddy's 2001 Suburban.
I just hooked up the Tech2 to the laptop and downloaded the programming and then disconnected the Tech2 from the laptop and hooked it up to his Burb and programmed it.
For anything older than 2007 you shouldn't need anything other than TIS2000.
The TDS is for 2008+ software from my understanding.
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