Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, 2003 CTS thermostat in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; http://www.cadillacforums.com/forums...ing-chain.html
Check out that thread, it may help....
Ii got mine done cash deal with a cadi mechanic who i know. i asked what he wanted for it after he was done and was expecting 2-300...he only wanted $50
Sounds like the kind of mechanic I've been looking for, any chance of a reference? I live in the GTA and need hella work done to my old girl. Not expecting crazy prices like that but I got a lot of work to do and if he's good and reasonable, I'd like to get in contact with him. The Caddy dealership in my city is a joke, won't take my car there anymore but I'd rather an experienced caddy tech than my regular guy.
When replacing the thermostat on the 3.2L, make sure the t-stat housing gasket is the correct size. The first one I got had a housing gasket more like an o-ring and allowed a ton of coolant to leak. The gaskets are not sold alone; you'll have to buy the entire housing again, or along with another t-stat. It was a pain but got it done. I didn't even remove the fuel lines, just turned them to the right side of the engine. the lower manifold was a little tight, but came out; you'll have to give it a little tug from one side or the other. It took me a while because I had trouble removing the t-stat housing from the coolant tube that runs behind the timing belt to the rad hose.
My mechanic replaced my Thermostat and front brake job "Pads&Rotors including brake lines which I ignored the recall like a jackass and one of the brake lines broke lol all said and done parts and labor $463 not bad I am happy no more check engine light. Word to the wise what my good friend "Mechanic Mike" told me never ignore a recall especially when it comes to your safety.
450 is a very reasonable price, the shop i work at usually charges 8-900 with parts and labor...alldata calls for 3.8 hours to do...i did mine and it took me 3 hours, and the guy talking about a sensor too, i really don't know what hes talking about but have yet to see one with a thermostat...just intake gaskets, thermostat, thermostat gaskets(don't forget the 2 o-rings on the split housing under the driver's side cams), and if your valve cover gaskets are leaking it'd be a good time to do them, since you're pretty much there.
I have replaced the Thermostat today; it is more or less 5 hour job. My dealer gave me $800 estimate just for thermostat. I asked for coolant temperature sensor too but he said it is not included.
Anyway I have done with my friend paid him some money.
Parts you need are following.
Complete Gas kit for the intake system, on rockauto.com acdelco is about $65. When you are opening the intake why not change all those.
Thermostat with hosing, I bought from GM dealer $65 since it is way buried in the engine and cannot risk cheaper brand. With gas kit.
Get o rings for the coolant hosing there are two O rings there it is dealer item $3 each.
Coolant temp sensor, the green one.
Taking out the sensor is little tricky when you get it loose, first take out the side hosing for that you need to open the side one screw for that hosing.
We also changed the gas kit for the oil cooler too which is also right there but it is optional.
I will post pictures. IMG_0647_1024.jpg
Now disconnect the fuel lines and then take out middle intake, also disconnect the injector connection. IMG_0652.jpg_1024.jpg
Now first take out the side hose. IMG_0655_1024.jpg
Now unscrew the thermostat and you need to wiggle it out trick like sofa when you try to get into 3rd floor and door is kind a small. IMG_065_10247.jpg