Will the 3 more expensive code readers work on a chevy silverado 1500 z71

Question

two code readers did not work. went to advanced auto, theirs did.

Answer 1

The ELM327 (bluetooth or wifi) might be the best option, since they are more likely to do depending which app (android or iphone) you choose to use. You can try to use the free app and see if they can read the codes. The ELM327 will be as good as the app is.