Need some advice - New Yukon AT4 Ultimate check engine light came on

[jerry455]

And there is the rub, a quality bidirectional scanner that works with global b. I am currently trying to find one to purchase. I have access to MDI 2's but when I retire from GM, i want an aftermarket scanner to be able to repair my 21 Suburban. I work with some of the people who develop the GM tools, but I will need an aftermarket scanner, when I don't have access to GM's internal network. I asked them about a comparable aftermarket, but they don't really use anything but the company tools.

 

[GMCChevy]

Just to read codes like this under warranty you should be able to pick up a cheap scanner. You're not doing any work yourself so don't need anything fancy.