It has heavy duty cooling but I don't know what that entails.
i recently contacted called via email from cadillac.com and they got back to me the next day with the correct answer via telephone and email confirming our telephone conversation.
let us know what they say because I would be interested also.
As far as I show for the Trailering Provisions option on the 2012 SRX I show that it includes a hitch and a wiring harness. I can look into it further to see if anything else is also included but for now that is all I show as part of this option.
If you go to the GM webpage under the Build & Price option, once you choose your model (SRX of course) you will get into the options page. Click on Trailoring package, click on view details and you will see the hitch comes with an oil cooler.