It’s easy to upgrade GM 4L80-E and 4L85-E work/sport vehicles for maximum performance and durability with this new comprehensive kit from #Sonnax. Innovative components work together to precisely recalibrate pressures and shift accumulation, delivering firmer shifts under load without sacrificing low-speed drivability. Plus, target common wear areas in the transmission with many top-quality parts to repair damage, prevent future wear and improve reliability. Watch this video to get the full brea