Brakes 1992 Dodge Caravan 155,000 miles

It sounds to me that your dealership should send there guys for more training. Anyways it sounds like you have got air in your brake system. You should get a buddy one day and pick up a can of brake fluid 1 litre get a see through plasic hose to fit over your bleeder nipples and bleed the system. Why I say get a hose is becauce you will know how much fluis you have put in vehicle/ start from your farthest brake which will be your pass rear then do drv rear pass frt and last drv frt good luck. Oh by the way run the hose into a clear plastic jar or a old jam jar