tranny problems
 

I have a feeling my tranny may be on its way out. About 1 month ago I had the tranny reprogrammed, when I put it into drive it just revved up. Now I noticed that when I take off pretty fast from a dead stop when it shifts into second gear it will slam into the gear, and act a little sluggish. Its not doing this 100% of the time now its probably about 50%, not sure if I should take to dealer or just wait it out and maybe drive like an old lady. Anyone have this happen??

50% of the time? thats quite a bit.. I'd take it back to the dealer and explain the problem. Explain that it happened after the reprogram, Never before.

which model ?? 3.0 4.4

3.0 2003 64kmiles auto.