Hello, good morning, I have acquired the MAXIPRO MP808 AUTEL, but I do not know if it is normal, at the time of turning on the equipment in the window where all the brands of the cars should be, it is empty, neither the models nor the brands, American , Europeans or Asians, I need to work, do a test with a TRAILBLAZER 2007 4X4 8 EDITIOB SPECIAL CYLINDERS, AND DO NOT RECOGNIZE IT, I am missing

 Thank you, I have already been able to update and scan the vehicle, but I have another doubt, the TPMS can be programmed in this model GN-TRAILBLAZER 2007- 8 CIL, with the AUTEL - MAXIPRO MP808. THANK YOU