2024 Sierra Denali Oil Change Timing Belt Replacement. 6.6l duramax l5p maintenance schedule and service information, including service part numbers, oil and fluid specifications, and fluid capacities. โ your gmc sierra 2500 service interval occurs every 7,500 miles.
We also have links to all the 3.0l duramax maintenance parts, fluids, and oils you need to maintain your lm2 duramax on this page. It is supposed to include oil, top off def, and rotate tires.