please help solve transmission problem!?

[bankout86]

1997 Tahoe

I took the truck to a local transmission shop and they told me that I'm probably going to need a new transmission!?! I'm not so sure of that.

My truck drives and shifts perfectly for about the first 10 - 15 minutes of driving.

After that it starts to shift hard between gears.

I put the truck in neutral and turn it off. Once restarted the problem goes away for another 10 - 15 minutes.

It has 140,00 miles and I have out 25,000 on it with this problem occuring.

I've noticed a lot of people have had this same problem. But reading through tons of forums I can not find one answer that agress with another one about a solution.

Anyone know/ ever fixed this problem before?

 

[SunlitComet]

Shifting suddenly become very hard. When going from park to either reverse or drive it slams into gear. 1-2 and 2-3 shifts are also harsh. All gears seems to work. May be intermittent



CheckThrottlePosition Sensor (TPS).for smooth electrical response. If the response is jumpy or erratic at all.