I have a 99 Jimmy that stalls when it's in first and when its in reverse, more commonly when the whell is turned. My engine light came on a couple days ago and had it diagnosed as code # P0410B Secondary Air Injector System Malfunction. Although that did tell me what is wrong with it, that is a very broad diagnosis. I need to figure out specifically what is wrong with the SAI, but im not sure how to go about testing to see what the issue is. Also, if anyone knows how long i can drive it like this, please let me know.