✔️CANFD Protocol: Thinkcar Thinkdiag2 is the only tool in this range that supports CAN FD protocol vehicles(for GM vehicles after 2020), saving on buying adapter and getting stable communication. Step 3 : Active Thinkdiag 2 ( the serial number is in the back of Thinkdiag 2, the password is in the white sticker in manual book ).
eBay