shudders then dies?

[kylep]

I was driving my tahoe a little hard yesterday about 75 for 2 hours on the freeway when all of a sudden the old girl (217k miles) starts shuddering real hard and I dont know whats going on, so I pull over. The truck then shudders and dies. I try starting it up a few times and give it a few minutes. Then she starts and im on my way again this time doing 55. then it happens again.

My first thought was the transmission. BUT, why is my car engine dying? she runs, then shudders, then dies. I just went out front and checked the oil and looked around and tried to pull codes, got none! I started her up and she shuddered again and died!

Hopefully, one of you guys knows because I have no idea!

Thanks for any input, i am lost!