I have just got a new ride that has came in from Nevada it has not been drove for 3 years its running a 351w and what i think a c6 or c4 trans i have done around 70 miles in it over the last few days with no problems, today i got in it went about 200 yard up the road and the trans started slipping by the time i got it back home i had no drive but i still have reverse the fluid is nice and red and dose not smell burnt and is on the rite mark on the stick , any idears what mite be wrong or is it shot
many thanks