2024 Duramax Diesel Problems. Two weeks in i had a problem with the pro tailgate going down on its own. 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.

Some are ok, but more problems on the new ‘24 electrical architecture than there has been in a long time. Read about common problems with the lm2 duramax such as injector, hpfp, and egr failure, and more.