2024 Duramax Problems Faced. General motors has initiated a service update for the 2024 gmc sierra hd, addressing an issue with the 6.6l v8 l5p turbodiesel duramax engine. The 2024 zr2, despite weighing an extra 145 pounds and wearing goodyear wrangler territory mt tires, dispatched 60 mph in 6.8 seconds and cleared the quarter.
Then came check engine light and code for bad. While these engines are reliable and durable, a few model years have specific problems you would want to avoid.