I've read it does / can, the app has options for a lot of virtual gauges for sensors I don't have. I haven't made a determined search or comparison between my '02 Sub and '05 Tahoe. Although my '02 does have the blank space in the instrument cluster for the factory temp gauge of the 2500 series. And upgraded clusters with a trans gauge are available, and that pretty much means the data for it is already in the bus. Question is getting to it.
I'm not yet clear if Torque Lite is showing me all the gauges it has, or only those that have matchign data feeds in my vehicle. I have however found references on how to create a gauge / PID -
http://www.ecoboostperformanceforum...tml?PHPSESSID=nLyV,JhiZL1AZ-2JDg-p03#msg29860
But in truth I haven't looked to hard. I'm still messing with the idea of an A pillar gauge cluster. I want dash-mounted voltmeters too and I'm still considering my overall layout. So I might go with an aftermarket trans temp gauge. Also considering alterations / an upgrade to the fatory trans cooler, a relocation, and considering temp gauges both before trans fluid enters the radiator tank and after it exits the external cooler.
And that's another reason for a dongle and a phone / tablet app - they're totally portable. I can use them in any OBDII vehicle. Mine or even other people's. And once the driving is done, a tablet can serve all sorts of other duties. With my samsung 7" tablet in the dash mount I can swipe the screen and bounce from gauges, to a(n internal GPS) TomTom-like navigation app, to other off-road Topo / Nav apps. Or just surfing if there's wifi available.