I want to install a Dorman automatic transmission drain pan in my 2006 Trailblazer LS, 4x4, 6 cylinder, short wheelbase. I was told that several transmissions came that year in, 4L60E and a 4L70E. I heard that each had a shallow and deep pan. Is there a way I can look either on the glovebox code sticker, or crawl under the vehicle to identify which transmission model I have and if it is a shallow or deep pan style? I want to change the filter also and want to make sure I got the right one.