Problems with 2003 Chevrolet Avalanche 1500 POWER TRAIN

This is the second transmission, the clip that holds the transmission line to the radiator breaks allowing the line to come off resulting in all transmission fluid being lost and resulting in destroying transmission

I was driving approximately 15 to 20 mph down a hill that was curvy and all of a sudden my truck completely shuts off as i was driving down the hill and almost went into a ditch because the truck just shut off while in drive and luckily i was quick enough to put it in neutral so i could steer it away from the ditch and i turned the ignition over and luckily it turned on while in neutral otherwise i would of crashed into the ditch. then it shut off again about 30 seconds after and luckily i was able to put it in neutral again so i could steer and coast down the hill because it wouldn't start up the second time when it all shut off. i was stranded at the bottom of the hill near a light so i tried to start it again and it would keep trying to turn over but wouldn't start again. i was stranded in the middle of the road and had to call aaa to tow my avalanche to my house. this could of killed me if i wasn't quick enough to figure out to put it in neutral to be able to steer. there should be a recall on whatever made this happen and i still don't know what is wrong with it because it happened late last night and i was looking for recalls and it doesn't show anything on this. *tr

Transmission began making a low whirling noise and now slips and chugs. no towing or 4-wheeling beatings. i have taken very good care of this vehicle. i love my avalanche but now the rear wheel bearing are going as well!!! *tr

Since purchasing this truck on 02/01/2007, there have been multiple problems with the transmission, engine, and electrical system that have not gotten resolved, however they do seem to get worse. the worst of these problems has occurred while driving on the northeast extension of the pennsylvania turnpike. while attempting to pass another vehicle in the left lane the engine "shut off". i was doing approx. 60-65 mph when this occurred during the am rush hour. after losing engine power i somehow made it safely to the right hand shoulder and let the truck "coast" to a stop. the power steering was not working, nor were the power brakes. after finally stopping, the truck did restart and i slowly continued on my way to work. the truck was taken to a dealership, and for almost (2) weeks the truck sat there while they tried to figure this out. after getting the truck back, the same problem occurred, and it went back to the same dealership. since then it has been ok, except i have lost dashboard lights, radio lights, and also the cruise control indicator light, they claim other problems, however these issues were never a problem before they worked on the truck. now i have air-bag lights flash at me while driving, and the transmission is slipping, this was the first problem with the truck that i reported on 03/14/2007 to the dealership that i purchased this truck from. i have already paid over $1500.00 i repair costs, only to have them tell me it will cost approx. another $800.00-$1000.00 to correct the air-bag, and transmission issues. these should be covered by my warranty, except the dealership insists i pay for the repairs. i have paid enough, and i am at my wit's end with this truck, and the dealership. i feel that i can no longer "safely" drive my family around in this truck, and i still have many years of payments left. ( i have never been late on a payment) please help me, i feel as though i have been sold a "money pit". *tr