What’s New About the 2027 GMC Sierra HD’s 8.3L Duramax Diesel?
In this article What You Need Before You Start Configuring the 2027 Sierra HD Duramax 8.3L: Step by Step Print-and-Go Pre-Order Checklist Quick Recap: The 2027 Sierra HD Duramax 8.3L Configuration at a Glance GM pulled the wraps off the 2027 Sierra HD on September 24, 2026, and the headline is a clean-sheet diesel the…