My dad bought one off of Aliexpress since there are several GM vehicles between us and at various times we have needed to do the "dealer exclusive" things that only a Tech II can do. Rather than pay $100 a trip to the dealership to have some idiot who doesn't know how to use the Tech II fumble through it for over an hour, the price of the chinese clone makes it a very worthwhile purchase.
We found a seller that had a good sales record and ratings and pulled the trigger. The shipping was super fast, it must have only been 3-4 days after placing the order that we received it. When we first got it, I powered it up and did all the recommended self tests, everything passes fine. All the promised parts and accessories were present in the box. So far I have used it to do a CASE learn on a 2000 Buick and it worked great for that.
They seem to have these clones figured out really well. Just buy from a seller that has a strong sales record and good feedback.
