Is the Gmc SIERRA HD reliable?

The Gmc SIERRA HD has 6 total NHTSA complaints across 1 model years. Years to avoid: 2015 (6 complaints).

What years of the Gmc SIERRA HD should I avoid?

Avoid the 2015 Gmc SIERRA HD. The 2015 model has the most complaints (6) with the top issue being STEERING.

Reliability and problems by year based on NHTSA complaint data.

Year	Complaints	Top Issue	Verdict
2015	6	WHILE DRIVING, THE POWER STEERING HOSE CAME OFF CA...	Below Average