comes out of gear

[btmsranger]

ok i have a 99 automatic 3.0 when the truck is cold or has been sitting for like 6 or more hours when u go to drive it it wont stay in gear till it is warmed up any ideas on what it could be?

 

[Downey]

have you checked your fluid level?

 

[btmsranger]

Yea fluid is full