It is inside the HVAC housing, under the dash.
heater core
The heater hoses are 5/8 inch diameter.
Remove the water supply hoses from your 2002 Dodge Ram 1500 heater core. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
Yes
Drain the water from your Dodge Ram truck cooling system. Remove the water lines from the heater core. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
pull the dash
Remove the three 8mm screws holding it in
A 1999 Dodge Ram does not have a water control valve.
have a professional do it
Yes, it will make the interior smell bad.
If a Dodge Ram Van is not getting any heat, the first sign of it being the fault of the heater core would be a very wet passenger side floor board. The heater core is located near the foot well on the passenger side.
I got one at the dodge dealer for $95.00 (usd)