2015 Toyota Tundra DC SR5 5.7L
Actually, it was a metallurgical issue with certain runs of needle bearing cages used in the Aisin-Warner A340 overdrive planetary gearset. They usually let go while under heavy load (towing, etc) with the OD on and spit the bearings out which grenaded the rest of the internals. It was fixed by the supplier starting with the 2003 model year Tundra.Also, like it was mentioned before. 00-02 had trans problems. First gear sprag was weak if I remember right.