Originally Posted by nickxrunner
Does anyone know for sure, with my motor the V8 5.9L, how hard it is to change the Thermostat and its gasket? Where is it located at on the motor and how hard it is to get to???
Again, thanks so much for all your help.
I just did mine (last week), go to the dealer and buy a new upper hose, water neck, and gasket (water neck is a dealer only item and runs about $10.88), I think my total parts cost was $69.00. The front screw is a bitch to remove. The reason I say to replace the water neck, they are very thin alum. and the first time you unbolt it, it will warp. It is located between the alt. and a/c compressor, you'll need the following tools to acomplish it.
3/8 drive ratchet
9" of extensions
1/2 9/16 sockets
You need to remove the support bracket between the alternator and the manifold to make access easier. The bolts are PITA to remove, when putting them back in, use heavy grease or similar substance to hold the bolts into the socket when dropping them into place. Even with the new water neck and gasket, use a little bit of RTV between the gasket and the waterneck and the gasket and the manifold. Depending on your talent, about a 1 1/2 to 2 hr job. Be very careful with those bolts, if you drop them, they will get lost very easily.
VERY IMPORTANT: The radiator drain plug is concealed behind your fan shroud. If you have someplace to safely drain the coolant, just unbolt the hose at the radiator and at the block and let the coolant drop to the ground or catch pan. You will lose maybe 1/2 to 3/4 gallon. Would be a good time to flush the system while your at it.