Fits: 2020 thru 2023 GMC Sierra Denali 2500HD/3500HD L5P Duramax Diesel

*Denali models ONLY!*

OEM GM winter cover for your truck during the winter months. Duramax engines utilize two thermostats and during cold weather, the engine may never get up to the proper operating temperature. These covers will help maintain proper engine operating temperature which will ensure faster warm ups and better fuel economy. Easy installation, no drilling required.

DmaxStore Note:

• For SLT & AT4 models, see part# 84789272