It looks like you're new here. If you want to get involved, click one of these buttons!
Need help navigating? firstname.lastname@example.org - or send a private message by clicking on my name.
From this forum and the GMC Acadia forum (Acadia uses same 3.6 liter engine as the CTS), unfortunately GM is of little help unless the engine is still under the powertrain warranty. Since your vehicle is a 2006, I assume it is not under warranty. This engine has significant problems with its timing chains (3 in total), and when you're losing oil it means there is insufficient lubrication of the timing chains and the rest of the engine. As a result the chains tend to stretch leading to major engine damage. If I were you I would top up the oil and trade it in as soon as possible. Good luck.
Help | About Us | Contact Us | Careers | Affiliate Program | Dealer Center | Privacy Statement | Visitor Agreement | Membership Agreement
Your Ad Choices | Site Map | Glossary | Mobile | Developers
© Edmunds.com, Inc.