02 monte ss clunking tranny

[montesswhit]

so when i start the car and drive for awhile, the car runs fine. but after about 15 mins you start to get a clunking noise when the car shifts from 1st to 2nd or 2nd to 3rd, etc. any suggestions?

i dont really want to have the whole thing rebuilt, could it be just flushing the fluids or anything like that?

[RayenTiger]

Mine does the same thing....my is due to 240,000 miles and never had a tranny flush so the valves stick at the shift points and cause clunking...im not going to flush do to never having one its a 50/50 chance the flush will ruin my tranny :-(

[maxwedge]

Get it checked out, if it is due too a hard shift issue that is internal, but it could be an axle or mount not the trans.