GMC Sierra Denali Common Problems

The most common GMC Sierra Denali problems, based on 52 NHTSA owner complaints (2018–2020), are engine, service brakes, steering, electronic stability control (esc). The 2019 model year has the most complaints (26). Complaints are owner-reported and differ from official recalls — check a specific VIN's recalls and history at vincheck.it.com.

Most-reported GMC Sierra Denali problem areas
ENGINE14 reports
SERVICE BRAKES14 reports
STEERING10 reports
ELECTRONIC STABILITY CONTROL (ESC)7 reports
ELECTRICAL SYSTEM6 reports
POWER TRAIN6 reports
UNKNOWN OR OTHER5 reports
EXTERIOR LIGHTING5 reports
STRUCTURE4 reports
ENGINE AND ENGINE COOLING1 report

GMC Sierra Denali best & worst years (by complaint volume)

Ranked by NHTSA owner-complaint count per model year — a leading reliability signal. The highest-complaint years are worth extra scrutiny; the lowest are the safer bets. Always confirm with a specific VIN's history.

Model yearComplaints
2019 GMC Sierra Denali26
2018 GMC Sierra Denali17
2020 GMC Sierra Denali9

Worst year: 2019 (26 complaints). Best year: 2020 (9).

Complaints by year: 2018 · 2019 · 2020

Frequently asked questions

What are the most common GMC Sierra Denali problems?

Across 52 NHTSA owner complaints (2018–2020), the most-reported GMC Sierra Denali problem areas are engine, service brakes, steering, electronic stability control (esc).

Is the GMC Sierra Denali reliable?

NHTSA owner complaints are one reliability signal. The GMC Sierra Denali has 52 on record, most concentrated in the 2019 model year (26). Cross-check recalls and a specific VIN's history before buying.

Which GMC Sierra Denali years should you avoid?

By NHTSA complaint volume, the 2019 GMC Sierra Denali draws the most owner complaints (26), while the 2020 has the fewest (9). Complaint counts are one signal — always check a specific VIN's history too.

Which is the most reliable GMC Sierra Denali year?

Among the years we track, the 2020 GMC Sierra Denali has the fewest NHTSA complaints (9), a positive reliability signal. Confirm with recalls and the specific vehicle's history before buying.

Do complaints mean the GMC Sierra Denali was recalled?

Not necessarily. Complaints are individual owner reports; recalls are official safety actions. Check open recalls for a specific GMC Sierra Denali VIN with our free recall lookup.

GMC Sierra Denali recalls · GMC Sierra Denali overview · Full GMC Sierra Denali VIN history — from $5.12/report

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