I have 95 Lumina with a 3.1 engine and a 4T60-E transmission. This car has 172,00 miles. I have taken very good care of this car. It started this all at once as for as I can tell, I mean I had not noticed any thing out of the ordinary until last night I backed out of my drive and when I started to go forward I noticed that it slipped just a little before it went on. I drove it about 60 miles and each time I stopped it slipped a little more taking off. It does the same thing in reverse. It works fine after it takes off, no problem with passing gear or anything, just taking off it slipps. I changed the fluid and filter this morning, it did not help, I did not really think it would, because it had only been about 25,000 since I changed it. The fluid did not have a bad smell or color, nothing in pan. Any ideas would be greatly appreciated.
Thanks