2007 Chevrolet Silverado 2500 transmission problems

Tl*the contact owns a 2007 chevrolet silverado 2500. While driving between 40-60 MPH, the vehicle vibrated from underneath. The vehicle was taken to the dealer on three occasions. The first time, the dealer did nothing to repair the vehicle. The second time, they replaced the drive shaft and rebuilt the rear end. The third time, they repaired the transmission. The current mileage was 1,200 and failure mileage was 400.

Failure of hose crimp in pressurized transmission cooler line. No replacement parts availability through dealers (10) or manufacturer, is indicative of a larger problem. Other hose failures have been confirmed, by other owners of both 2006 and 2007 model years. Possibility of catastrophic hose joint failure, at high speed, with possible resulting engine compartment fire or explosion. Has been confirmed by independent ase certified mechanic.