I have a question about my transmission on my 2001 Chevy Silverado. The trans is a automatic overdrive hooked up to a 4.8 Vortec V8. When I am in drive and sitting on a slope (it doesn't have to be very steep) my truck rolls backward like it is in neutral. Also when I first start it in the morning it is a little hesitant to go into drive. I have taken the truck to the Chevy Dealership where I bought it and twice they told me nothing is wrong with it. The GM Certified Mechanic told me that the rolling backwards on a slope while in drive is normal. I still have about 24,000 miles left on the warranty and I don't want the trans to go all to hell after my warranty expires. I think something is wrong and they don't want to fix it until the warranty expires, maybe I am wrong but has anybody else ever had a problem like this?????

I would want a second opinion on something like that.
Take it to another dealer and see if their opinion differs.
Up to a certain degree of slope the truck SHOULD hold in place while in drive with the brakes off, You said your doesnt.
When you say it's hesitant to go into drive are you talking about the shifter, or you get it into drive and it goes when it feels like it.
That is definately NOT normal, does it happen only when cold or, also after the truck has been running a while.

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The hesitation is when I shift it into drive the, it is cold and give it some gas it hesitates for a second or two, then it goes. It just doesn't feel right when it shifts, it feels like it gritty and not smooth. The shifter works fine and doesn't give me any problems. The dealer said I should have to have my foot on the brake anyhow at a stop or on a slope. The head salesman and mechanic said that GM trannys do this and it is normal. I have never been in or had a automatic vehicle that would roll backwards while in drive and my foot off of the brake. I have a friend who suggested the same thing about going to another dealership and letting them check it out. I think I will try that before the warranty expires, as I have heard these are not cheap trannys to fix or replace. If all else fails I will just trade it in on something else, I am not to fond of this truck anyhow...