How To Change The Heater Core On A Chrysler 300M: + Steps!

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Can changing the heater core on a chrysler 300m it is a very simple process, well within the limits of the ability of the average DIY mechanic. The entire process should take less than two hours and requires no special tools or manuals.

Steps to change the heater core of a Chrysler 300M

Change The Heater Core On A Chrysler 300M
Chrysler 300 M

The steps you need to take to replace the heater core on a Chrysler 300M are as follows:

1- Empty the cooling system.

Draining the cooling system will prevent toxic engine coolant from leaking into the vehicle’s passenger cabin during heater core removal. To drain the cooling system, simply disconnect the lower radiator hose by loosening the hose clamp and pulling on the hose. Be sure to drain the fluid into a sealed container and dispose of the coolant in a proper place.

2- Pull the dashboard 15 centimeters backwards.

To do this, you will need to remove the following parts: the center dash bolt (located under the defroster vent cover), the bolts under the driver and passenger platforms, the bolt that connects the dash to the radio bracket and the screw that connects the dashboard to the back of the glove box.

The locations of these bolts are immediately apparent by looking under the dash. Once you’ve removed these screws, you can pull the dash back and secure it.

3- Remove the heater core box.

The heater core box is a black plastic box that surrounds the heater core. This part should be visible when looking down the dash from the passenger seat.

Remove the two bolts at the top that hold it to the firewall and one at the bottom near the footwell. After these bolts are removed, the heater core and housing are attached to the vehicle only by the coolant lines, which you can now disconnect by reaching into the housing and pulling them out of the heater core (you may have to first to loosen the clamps).

4- Install the new heater core.

The only thing left to change the heater core on the Chrysler 300M is to put in the new core. This is accomplished by applying steps 1 through 3 in reverse order; reconnect the heater core coolant line, again try to install the heater core box (make sure to apply silicone sealant to the edges of the box, sealing it tight), replace the dash board and install the bolts, and refill the cooling system.

Can changing the heater core on a chrysler 300m it is a very simple process, well within the limits of the ability of the average DIY mechanic. The entire process should take less than two hours and requires no special tools or manuals.

Steps to change the heater core of a Chrysler 300M

Change The Heater Core On A Chrysler 300M
Chrysler 300 M

The steps you need to take to replace the heater core on a Chrysler 300M are as follows:

1- Empty the cooling system.

Draining the cooling system will prevent toxic engine coolant from leaking into the vehicle’s passenger cabin during heater core removal. To drain the cooling system, simply disconnect the lower radiator hose by loosening the hose clamp and pulling on the hose. Be sure to drain the fluid into a sealed container and dispose of the coolant in a proper place.

2- Pull the dashboard 15 centimeters backwards.

To do this, you will need to remove the following parts: the center dash bolt (located under the defroster vent cover), the bolts under the driver and passenger platforms, the bolt that connects the dash to the radio bracket and the screw that connects the dashboard to the back of the glove box.

The locations of these bolts are immediately apparent by looking under the dash. Once you’ve removed these screws, you can pull the dash back and secure it.

3- Remove the heater core box.

The heater core box is a black plastic box that surrounds the heater core. This part should be visible when looking down the dash from the passenger seat.

Remove the two bolts at the top that hold it to the firewall and one at the bottom near the footwell. After these bolts are removed, the heater core and housing are attached to the vehicle only by the coolant lines, which you can now disconnect by reaching into the housing and pulling them out of the heater core (you may have to first to loosen the clamps).

4- Install the new heater core.

The only thing left to change the heater core on the Chrysler 300M is to put in the new core. This is accomplished by applying steps 1 through 3 in reverse order; reconnect the heater core coolant line, again try to install the heater core box (make sure to apply silicone sealant to the edges of the box, sealing it tight), replace the dash board and install the bolts, and refill the cooling system.

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