Owner complaints · every model year, every system

GMC Sierra problems, by model year and system

4,555 complaints owners filed with NHTSA about the GMC Sierra 2016–2026, and the 5 systems the record is deep on — engine (1,996), transmission and drivetrain (1,074), electrical (649), brake (540), body and structure (234). Each system has a page across the years; 31 model-year pages go deeper still. Every figure is a linked federal record; none is a failure rate or a verdict on one car.

The systems the record is deep on

Source: NHTSA complaints, recalls, investigations and manufacturer communications

1,996complaints, engine

Engine problems across every model year, and the years with a page of their own →

1,074complaints, transmission and drivetrain

Transmission and drivetrain problems across every model year, and the years with a page of their own →

649complaints, electrical system

Electrical problems across every model year, and the years with a page of their own →

540complaints, brakes

Brake problems across every model year, and the years with a page of their own →

234complaints, body and structure

Body and structure problems across every model year, and the years with a page of their own →

GMC Sierra complaints, year by system

Source: NHTSA complaint database

Model year	engine	transmission and drivetrain	electrical	brake	body and structure
2026 135 in all	88	29	15	—	—
2025 124 in all	57	27	26	—	—
2024 370 in all	215	73	44	—	27
2023 485 in all	230	91	64	17	88
2022 587 in all	265	108	82	32	103
2021 575 in all	355	139	76	24	12
2020 479 in all	260	97	81	55	—
2019 673 in all	337	140	100	123	—
2018 321 in all	78	133	43	48	4
2017 429 in all	67	145	60	127	—
2016 377 in all	44	92	58	114	—

Complaints owners filed with NHTSA naming each system, per model year; a bold count links the year’s own page on that system. Counts scale with sales and with time on the road; nothing here is a rate, and NHTSA’s headings are coarse (“Power Train” is the transmission and the driveline).

From here

Every 2027 model on file, by price Compare two vehicles, trim vs trim See what a VIN was priced at See what owners reported

Common questions

Source: NHTSA complaint database

Which GMC Sierra system draws the most complaints?

Engine: 1,996 complaints across 11 model years, 44% of everything owners filed about the GMC Sierra. A count, not a rate — it says nothing about how many were sold.

Which GMC Sierra year has the most complaints?

2019 (673), 2022 (587), 2021 (575). Older years have had longer to collect them; the year pages show each year's share by system.