i have a 1994 chevy g10 4.3l v6 van.
this van has a 4l60e transmission.
when i accelerate to fast from a slow speed (0 to 45 mph) or a dead stop my transmission seems to go into a neutral state until i let off the gas pedal a little then my transmission gos back into gear.
if i just accelerate easy/normal then its ok, i just gain speed like i am suppose to.
when i driving over 45 or more and then accelerate into passing gear then it works.