So how hard is it to change one at home, mine's starting to squeal like a banshee. If anyone can tell me how you go about it that would be great, thanks

 

I haven't done it on my Ram yet, but it wasn't hard on my old Dakota. When I did it, I took a large wrench, placed it on the bolt on the tensioner pulley, and used it like a lever to take the tension off the belt. Then have a buddy remove the belt from the tensioner pulley (or any other one), and then you can release the wrench and take the rest of the belt off. Before you start, note how the belt is routed unless it's shown on the engine compartment (I think mine is). Installation is the opposite. It's not hard, but sometimes it can be tricky to get everything in place just right and slip it on the last pulley. Watch your fingers too!

 

You take either a wrench ot a 1/2 ratchet to the idler pulley and take the pressure off the belt so you can slide it off of the pulleys. You may need to put some elbow grease to get the pulley started on it's spring release. You always put the pressure going away from the belt as a rule of thumb. The new belt may be fairly tough to get on as it will be a bit smaller compared to the stretched out older one. Make sure you have a belt diagram on your radiator support to put the new one back on properly. Once the new on is on, turn the key quickly a few times to seat the belt(don't start). After that has been done a few times then you can start and let it idle for a few seconds. Turn the key off go under the hood and make sure the belt is still on all the pulleys properly. Close the hood and your all set.