Hello chris I am not sure what years it covers that has not been verified but as far as
which modules are available for programming so far only powertrain ecm,tcm,abs at
the moment been told by support that the rest of the modules will be added later but
they never explained which modules and how much later that will be also been told
bysupport if the vin your trying to program its not available in their server to let them
know and they will add it. they have currently about 170k vins uploaded in their server
so far but many more are still missing i have yet to ask them about coverage will let
you know when i find out

 the way i do it its by complaint  i go to complaint or issues i fill all the boxes write the vin write the complaint  then tell them the vin its not available in their server for flashing  i always choose autel china from the list and they have always answered me very fast most of the time in the same day i have sent dozens of complaints or request so far they have fixed most of them and many more getting fix or added   you can do this from your tool or from here by going to your account very simple this way and it has worked for me every single time  good luck.

Thanks for the heads up about addressing directly to china :-)

  i read tht  you could do GM ECU replacement and programming in older versions but after GM update version 5 on maxisys, no more GM programming. by mistake i updated my GM version too so i know i wont have that feature and i never saved old version too in my computer. i wonder if one of you out there still have older version and some how can email or send me the file i would really appreciate it. i belive until version 4. you could have done programming on GM

 Hi this feature has been removed a year a go, it doesn't matter what version you use it is no longer available on autel server. maybe it will be released again in the near future.