Automatic Transmission problems of the 2007 Chevrolet Silverado 1500

Transmission shifted into 2nd gear while traveling 70mph down the highway. Will no longer shift past 2nd gear and shifts hard.

2007 new body style chevy silverado jerks / bangs while stopped as if I was rear ended. This has happened ever since the truck was new. Currently has 30,000 miles. The dealer of course could not duplicate problem.

2 months after buying my vehicle the brake on my vehicle had a bad squeal. Which happens when it is very humid outside. I went to the dealer they said it was weather and my brakes getting run in. 1 month later the same from the dealer no problem with the brakes, service tech's say it looks fine. 1 month ago a mechanic at my work saw pitts in my brake rotors. He says he has never seen a new vehicles with that much damage on a brake rotors on further inspection. All four rotors are pitted. This is a 2007 chevy silverado lt crew cab 4x2. #2 there is a jerking movement when u are coming to a stop at a stop sign are red light. The transmission seems to want to let the car keep going, told by dealer this was normal with my vehicle.

We have a new 2007 Chevrolet silverado that has been a problem. When you gave it gas it would shift real hard, we took it to the dealership and the seals in the transmission had to be replaced. The truck was in the shop 2 or 3 days for that. The hard shifting was still there. We continued to drive it. A couple days later my husband was driving the truck, and it stalled on him while driving. We drove it for about a week like that until I called gmac to report to them what was going on with the truck. The women I talked with told me it was a saftey issue and needed to be taken into the dealership. We took it into the dealership everytime the truck would stall while driving and nothing showed up on any dashboard displays. When the dealership had it,they hooked a computer to it and drove it. It did stalled on them, and their computer registered a failure, but it showed no codes. The dealership said they had to contact gm to find out what to do. We needed our truck by Friday because of prior plans. We called gmac complaint line on Thursday to find out what was going to happen. We talked with the complaint department as well as their saftey deparment explaining everything that was going on and that we needed thetruck. They said there was really nothing they could do, and pretty much told us we could pick thetruck up, knowing it was already noted as unsafe to drive. On Friday the dealership put a new computer in it, and my husband picked it up. On Saturday my husband and I were driving on I-75 in the passing lane going 75 mph and the truck quit on us. We almost had an accident with a Jeep, along with almost going down a hill. I called gmac right away to let them know what happened, along with letting them know that the computer wasn't the problem. This truck was a major safety issue. I've explained my concerns with GMC over the last couple of days, and they didn't want to help us at all.