Here is the mini post of how to use Autel MaxiSYS Elite to diagnostic GM
Autel MaxiSYS Elite Diagnose Vehicle Procedures:
Connect Autel MaxiSYS Elite to vehicle
Power on
Enter the menu to select “Diagnostics”
Select your vehicle manufacturer,here we select “GM”
Diagnostic program initialinzing…
Select “Automatic select”
Reading VIN
System will read the VIN automatically
VIN information decoding…
System data loading
Then the vehicle model information will show on the screen
Then select “Diagnostic”
Select “Auto scan”
Establishing vehicle communication…
Select “1.4l(L2N)”
Establishing vehicle communication
Select “Radio(UF7)”
Establishing vehicle communication
Then Autel MaxiSYS Elite will diagnose your vehicle
Scroll down/up to check the trouble code
And exit to select “Hot Function”
It include:Oile Reset,TPMS,Battery DPF & SCR,Immo & Keys,Injuctor,Steering,Throttle,Window door…,Change tire size.