My transmissions slips in the mornings. I back up put it into Drive on a hill start to go works fine but if I stop and try to go again it slips then go's into gear. It only does it on first start up . Just had it rebuilt 4r70w

Thanks

 

I would check the fluid level, one of my friends had a bronco 2 that sliped like crazy and then all of a suddon it would slam into gear. We found out it was about 2 quarts low. Added transmission fluid and it was fine. So its probly low fluid. Check it when hot at idle in park. If the level is good theres something wrong and it needs to be taken back to the person who rebuilt it. Let me know what happens. I hope this helps.

 

No codes, only does it on first start up when cold what could it be ? Taking it back on Thursday