Contents inside this Modal are only authorable inside of this page.

Choosing the proper grade of oil is a critical step in engine maintenance. From conventional to full synthetic, your GMC Certified Service experts offer a range of oil types, including ACDelco Conventional Oil, ACDelco dexos1TM Full Synthetic, and Mobil 1™ Full Synthetic. Ask the Certified Service experts which grade of oil you should use for your specific GMC model. You can also check your Owner’s Manual for the correct grade.

These oils contain a variety of characteristics that affect your vehicle's performance, offer varying levels of engine protection, and can extend the time between oil changes.


  • Offers quality engine wear and corrosion protection
  • Contains special additives that help your engine run smoothly


  • High resistance to oxidation, which helps keep the oil from breaking down 
  • Excellent low-temperature flow and pumpability during cold start-ups
  • Excellent protection to help prevent formation of sludge and other harmful deposits


  • Advanced anti-wear technology for outstanding protection of critical engine parts
  • Exceptional high-temperature stability helps resist oxidative thickening
  • Proven to provide outstanding cold starting, lubrication and protection from wear at
    low temperatures