Help my wifes caravan just started to downshift roughly at about 30 mph while coming to a stop. when it does this it seems like it hesitates and the lightson the dash dim for a second.. transmission fluid level looks fine and there is no check engine light on either... should we have the transmission fluid and filter changed....

Thanks for any input....

 

Have the transmission solenoid pack looked at.

 

where is the transmission soldnoid pack???