2015 GMC Sierra 2500HD

Error 400 (Bad Request)!!1 400. That’s an error. Your client has issued a malformed or illegal request. That’s all we know.

See more here: https://www.youtube.com/watch?v=0Yemmnt0vuE

Error 400 (Bad Request)!!1 400. That’s an error. Your client has issued a malformed or illegal request. That’s all we know. See more here: https://www.youtube.com/watch?v=0Yemmnt0vuE...