2021 GMC Yukon Engine Problems

NHTSA component category: ENGINE · data through 07/14/2026

155Engine complaints

52.9%Of all 293 complaints

#1Most-reported category

Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.

How engine ranks on this vehicle

ENGINE155 · 52.9%

POWER TRAIN47 · 16%

FUEL/PROPULSION SYSTEM40 · 13.7%

ENGINE AND ENGINE COOLING27 · 9.2%

ELECTRICAL SYSTEM24 · 8.2%

Share of the 293 complaints citing each category; one complaint can cite several. Full breakdown on the 2021 GMC Yukon overview page.

What owners report

“The component that failed was the Camshaft and Lifters in the Engine - My safety and others was put at risk because while going 45mph…”NHTSA complaint 11647336 — filed 03/10/2025

“What component or system failed or malfunctioned, and is it available for inspection upon request? - Engine Failure, on November 8, not certain engine is…”NHTSA complaint 11646087 — filed 03/03/2025

“at 60860 my first engine went out General Motors offered no help i have extended warranty it took 3 months to get my Yukon back…”NHTSA complaint 11645579 — filed 02/28/2025

Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.

Engine complaints by year filed

Frequently asked questions

Does the 2021 GMC Yukon have engine problems?

Engine is the most-reported problem area on the 2021 GMC Yukon: 155 of 293 complaints on file (52.9%). Complaints are unverified owner reports, not confirmed defects.

How many complaints does the 2021 GMC Yukon have in total?

293 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 9 involved a crash, 0 involved a fire, 9 reported injuries, and none reported deaths.

What does NHTSA's engine category include?

NHTSA assigns each complaint to standard component categories; this page reports the ENGINE category exactly as NHTSA defines and records it.

About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/14/2026.