Hello! I have a 2011 (purchased 2012 with 17,000 miles) Suburban, LT 1500 Automatic with 260,000 miles. Original tranny was replaced at 118,000 miles in fall of 2014, with a Jasper, which died 5 months later and was replaced with another in 2015. I now have a full out horrible shudder vibration and being told I need another transmission....looking for recommendations for a replacement with the best warranty possible. Thanks!!