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It would be rare for the heater core to be plugged on an 03. As far as flushing, Prestone makes a good DIY kit that you can find at WallMart for a reasonable price. The other option is to find one of the oil change places. They generally do radiator flushes as a service.
The 02-06 RAM has significant design problems with the HVAC system air control doors. It's likely that you are seeing the typical problems with broken plastic doors that control the air flow and temperature of the output. There is a video on YouTube showing how to diagnose and fix the problem. It might be worthwhile to search this out and get a little information on problems and aftermarket solutions.
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How do you replace the heater core on a 2002 dodge ram 1500?
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.
Does a 2003 Dodge Ram have a heater core?
Yes
How do you change the heater core in a 1988 Dodge Ram 4x4 W100 truck?
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.
How do you change the heater core in a 2000 dodge ram?
pull the dash
What is the easiest way to replace a heater core in a 98 dodge ram?
have a professional do it
What size are the heater core hoses on 1999 dodge ram?
The heater hoses are 5/8 inch diameter.
How do you know if your heater core is bad on a dodge ram van?
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.
Where does the top hose on the water pump go to on a 1999 dodge ram?
heater core
Where is the heater core on a 1999 dodge ram?
It is inside the HVAC housing, under the dash.
How much does a heater core cost for 2004 Dodge Ram?
I got one at the dodge dealer for $95.00 (usd)
How do you change the heater core in a 2004 dodge ram 1500?
the hole dash has to come out . just change mine in a 02 dodge ram 1500.
Where is the heater core valve on a 2003 dodge ram 2500 5.7 liter?
There is no water valve.
