I am new as well, and I need step by step instructions on how to replace the thermostat in my 2008 Charger, Thanks!

 

Welcome to DF
Is that with or without a hemi?

 

2008 charger without hemi

 

You might want to post up in the Charger section, but a brief internet search yielded this. Google is a wonderful thing:

1. Disconnect negative cable.
WARNING: Do not remove pressure cap with the system hot and under pressure because serious burns from coolant can occur.
2. Drain cooling system
3. Remove radiator lower hose from thermostat housing (1).
4. Remove nuts (2) from heater tube flange studs.
5. Loosen starter bolt at heater tube bracket.
6. Pull heater tube out of thermostat housing and position out of the way.
7. Remove bolt (3) and two studs.



Don't forget to install the thermostat the same way it came out.

Recheck the fluid level a few days later, also. The LH has the heater core way up in the dash, I guess the LX is the same. It'll take days to burp the heater core.

 

You might not need to drain the entire radiator, you should be able to drop the fluid level down below the level of the upper radiator hose that connects to the thermostat using the petcock, unless you want to fill the system with new anti-freeze.

It may not be a bad time to put some fresh fluid in, if it's original.

Hope this helps you out,

Tony