Automatic Transmission Cooler Problems of Chevrolet Silverado 1500

I was driving up a hill at approx. 5 miles an hour, with coworker in vehicle. The transmission could not find a gear and the vehicle lost momentum and rolled backwards down the hill. I had to slam on my breaks before I hit another vehicle. We were at kaiser hospital assisting with the cooling towers of the hospital. I had to turn the vehicle off and then on, and slow make my way to the parking area. My coworker was extremely worried and felt the vehicle was unsafe, as did I. This problem has happened several times.

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After a state inspection of my 2014 chevy silverado, I was told that the transmission cooling lines were leaking and needed to be replaced. The transmission lines had failed where the two pieces are crimped together causing the leak.

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1. Average gas mileage between 10 to 12mpg on freeway which is nowhere near what was shown on the sticker. 2. Radio not working/locks up, constant system errors, and display screen going black or green at random. 3. Mylink system not working correctly, won't take voice commands & shows error messages on screen. The computer will completely lock up & become unresponsive until restart. 4. Navigation system screen turns solid grey & locks up at random. 5. Backup camera is coming on & the screen then turns black while at freeway speeds in drive, shows error messages. 6. Lane departure system not working/detecting driver¿s side lines on road when crossed. 7. Driver and passenger's front seats feel loose at mounting brackets while driving (rocks back and forth). 8. Heated/cooled seats not cooling. 9. Transmission not shifting correctly, misses gears on acceleration; constant slips & clunks¿� from powertrain while at road speed. 10. Transmission/torque converter won't disengage from engine properly when braking & pushes the truck under engine power, to a stop at random times. The ecm/tcm is having communication errors or problems causing hazardous conditions to present themselves at random unpredictable intervals to drivers. 11. Engine misses/stalls when making sharp turns at random: fails to accelerate when merging into oncoming freeway traffic or turning out of parking lots. Again, the ecm/tcm is having some sort of software communication error which is causing hazardous conditions to present themselves at random unpredictable intervals to drivers. Freeway merging with oncoming traffic or out of a parking lot into oncoming traffic without the ability to accelerate the vehicle is an extremely hazardous condition not only to the passengers of the unresponsive vehicle but to the passengers/drivers in the oncoming traffic. -truck just bought back by gm at our loss.

Transmission cooling lines are leaking where rubber hose is crimped onto metal hose, gm part #25999419. Dealer is aware of issue, and states it is very common, but would not replace under warranty. Vehicle is less than 3 years old but has 47,xxx miles on it and the warranty is only 3 years / 36,000 miles. If the line busts, it could cause the transmission to stop shifting and would be unsafe as automatic transmission fluid would leak everywhere.

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The contact owns a 2006 Chevrolet Silverado 1500. The contact stated while driving approximately 5 mph, the steering wheel seized for a few seconds. Additionally, the front end of the vehicle vibrated severely. The vehicle was taken to an authorized dealer three times for the replacement of the intermediate drive shaft on three visits. The brake lines, transmission cooling lines and intermediate steering shaft were covered with rust and were replaced by the dealer. The manufacturer was not notified of the defect. The approximate failure mileage was 32,800.

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