Does the 2002 Dodge caravan have AC in the rear of the van? Or does it have just AC vents in the front of the Van.

It will not fit. You can use 2001 and up.

change thermostat, how fresh is your 50/50 coolant, 50% water is what gives you heat, with thermostat, are all heat controls in correct position ? any obstructions in vent hoses, has debris fallen into defroster vents etc., are rad hoses in good condition ? weak hoses collapse and prevent flow. good luck

does the van have rear ac there is a evap drain back there

You have multiple fuses for your blower system. Check your manual to locate them and start there.

I would start by inspecting the vacuum lines under the hood. The systems for the dash are vacuum operated. You could simply have a kinked tube that is not allowing vacuum to move an air flap under the dash. It is possible that something has gone down one of the dash vents and is also blocking a vent from opening or closing.

There are a few parts to evap, the canister is located under the van near tank then the evap valve is in engine area, the leak detection pump is located under van on front driverside, then you have lines that run from tank to canister then to engine then lines that run to detection pump and vent valve.

2002 do have a cabin filter on the pass side of van. looking under the pass side dash. Slide clip towards rear of van, pull filter out. Around $30 to replace.

its under the van up near the ex down pipe if its av6 it should be up very front of van raise the hood look str down u will see it

Your Caravan has no rear differential. The van is a front wheel drive, you may have a bad brake or your spare tire under the back of the van is lose. the other thing to look for in the back is the rear shocks could be broken or lose. Good luck and keep me posted, be glad to help get your van running 100% again soon. 

You are correct. It is in the rear heater box.