AutoUtility currently tracks 206 official NHTSA owner defect complaints for the 2021 GMC Yukon XL. Engine & Cooling issues are the most frequently reported category, appearing in 124 complaints (60.2% of submitted records). Among these NHTSA complaint records, 2 filings cite a crash, 1 cites a fire, 3 report one or more injuries.

Key Problem Findings
  • Total NHTSA Complaints: 206 reports
  • #1 Reported Problem Area: Engine & Cooling (124 reports • 60.2% of submitted complaints)
  • Secondary Problem Areas: Powertrain & Transmission (46), Fuel & Propulsion System (30)
  • Crash-Citing Complaints: 2 filings
  • Fire-Citing Complaints: 1 filings
  • Complaints Reporting Injuries / Fatalities: 3 injury filings • 0 fatality filings
Reporting Methodology: Statistics describe unverified consumer submissions voluntarily filed with NHTSA. Complaint volume is not normalized for vehicle sales volume or miles driven. Multiple components can be cited within a single owner complaint submission.
Total Complaints
206
Submitted to NHTSA ODI
Crash-Citing Complaints
2
Filings citing a collision
Fire-Citing Complaints
1
Filings citing smoke or fire
Complaints Reporting Injuries
3
Filings citing one or more injuries
Complaints Reporting Fatalities
0
Consumer filings citing fatalities

Most Reported Problems for 2021 GMC Yukon XL

Top automotive subsystem defect categories ranked by unique owner complaint volume in federal records

#1 Problem Area 60.2% of complaints

Engine & Cooling

124 owner complaints submitted to NHTSA ODI
⚠️ NHTSA Recall Context

NHTSA records list 1 official safety recall campaign for this model year involving the same broad component area:

*Component overlap means an official recall exists for the same broad vehicle system. It does not establish that an individual owner complaint was caused by, covered by, or resolved through that recall.
✓ 0 crashes or fires cited
#2 Problem Area 22.3% of complaints

Powertrain & Transmission

46 owner complaints submitted to NHTSA ODI
⚠️ NHTSA Recall Context

NHTSA records list 2 official safety recall campaigns for this model year involving the same broad component area:

*Component overlap means an official recall exists for the same broad vehicle system. It does not establish that an individual owner complaint was caused by, covered by, or resolved through that recall.
✓ 0 crashes or fires cited
#3 Problem Area 14.6% of complaints

Fuel & Propulsion System

30 owner complaints submitted to NHTSA ODI
⚠️ NHTSA Recall Context

NHTSA records list 1 official safety recall campaign for this model year involving the same broad component area:

*Component overlap means an official recall exists for the same broad vehicle system. It does not establish that an individual owner complaint was caused by, covered by, or resolved through that recall.
✓ 0 crashes or fires cited
#4 Problem Area 7.3% of complaints

Driver Assistance & Safety Tech

15 owner complaints submitted to NHTSA ODI
🩹 3 injury report entries
#5 Problem Area 6.3% of complaints

Electrical System

13 owner complaints submitted to NHTSA ODI
🔥 1 fire report
Domain Share Note: Share percentage represents the proportion of unique complaint filings referencing each vehicle system. Because single complaints may cite multiple systems (such as engine and electrical simultaneously), domain percentages represent individual category incidence and may sum to over 100%.

Symptoms Mentioned in NHTSA Owner Reports for 2021 GMC Yukon XL

Specific mechanical, electrical, and driver-assist defect symptoms identified via deterministic narrative analysis

AutoUtility uses deterministic phrase matching to identify recurring symptom descriptions within consumer-submitted NHTSA complaint narratives.

Powertrain & Transmission 12.6% of complaints

Loss of Motive Power While Driving

26 complaint narratives describe this symptom
Engine & Cooling 4.9% of complaints

Engine Stalling / Sudden Shutdown

10 complaint narratives describe this symptom
Symptom Identification Method: A complaint may describe more than one symptom, so percentages may sum to more than 100%. Symptom identification reflects text contained in consumer-submitted complaint records and does not establish a confirmed mechanical diagnosis.

Recent NHTSA Owner Reports for 2021 GMC Yukon XL

Representative defect filings submitted by owners to the NHTSA Office of Defects Investigation

Powertrain & Transmission NHTSA ODI ID: #11759178
Filed: 08/24/2026

"2022 GMC Yukon XL suffered catastrophic transmission failure at approximately 87,000 miles. An ASE-certified transmission repair facility determined that the torque converter failed, resulting in transmission damage requiring over $7,000 in repairs. GM declined any assistance solely because the..."

Incident Date: 08/10/2026 • Raw NHTSA Component: POWER TRAIN
Engine & Cooling NHTSA ODI ID: #11758958
Filed: 08/23/2026

"Engine failed. Had to be towed to the dealer to get a new motor. It was part of the 6.2l L87 recall"

Incident Date: 05/21/2026 • Raw NHTSA Component: ENGINE
Driver Assistance & Safety Tech NHTSA ODI ID: #11758876
Filed: 08/23/2026

"Was driving the vehicle at 70 mph on the highway without any issues for several hours and suddenly the vehicle lost power and had no propulsion. It went into neutral automatically and the engine shut off while driving. Thankfully I was on a downward slope and could steer the vehicle off the very..."

Incident Date: 08/22/2026 • Raw NHTSA Component: VEHICLE SPEED CONTROL,ENGINE,FUEL/PROPULSION SYSTEM
Powertrain & Transmission NHTSA ODI ID: #11758496
Filed: 08/21/2026

"Driving on busy road when heard a squealing from the engine bay of the vehicle. Moments later the vehicle lost power. It was a very dangerous situation traveling approximately 45mph on a multi-lane road in urban St. Louis Missouri. There was not a check engine light prior. The vehicle had a recall..."

Incident Date: 08/14/2026 • Raw NHTSA Component: POWER TRAIN,ELECTRICAL SYSTEM,ENGINE
Fuel & Propulsion System NHTSA ODI ID: #11757435
Filed: 08/17/2026

"I am filing a safety complaint regarding my 2021 GMC Yukon. While driving on the highway during a long-distance trip from [XXX] to [XXX], my vehicle suddenly experienced a serious loss of power, drivability issues, and loss of propulsion. The vehicle began shaking violently, slowing down..."

Incident Date: 08/16/2026 • Raw NHTSA Component: UNKNOWN OR OTHER,ENGINE,FUEL/PROPULSION SYSTEM
Consumer Narrative Notice: Excerpts are sanitized text descriptions submitted by vehicle owners to the federal ODI database. They reflect the reporting consumer's observations at the time of filing and have not been independently confirmed by vehicle manufacturers or government investigators.

Complaint History for GMC Yukon XL

Reported defect complaint volume across sibling model years (2021–2026)

Model Year NHTSA Complaints Crash Reports Safety Recalls Detailed Report
2021 GMC Yukon XL Current Page 206 2 12 Current
2022 GMC Yukon XL 154 3 4 View 2022 Problems →
2023 GMC Yukon XL 197 1 4 View 2023 Problems →
2024 GMC Yukon XL 63 0 2 View 2024 Problems →
2025 GMC Yukon XL 23 1 1 View 2025 Problems →
2026 GMC Yukon XL 0 0 3 View 2026 Problems →
Comparative Disclaimer: Complaint totals are unadjusted historical counts and are not normalized for vehicles sold, active fleet size, or total road mileage. Newer model years naturally have had less calendar exposure time to accumulate owner filings.

Detailed NHTSA Component Breakdown for 2021 GMC Yukon XL

Complete distribution of consumer defect reports across all 52 granular NHTSA system and subsystem classifications

Vehicle Component / System Total Complaints Crash Reports Fire Reports Reported Injury Entries Reported Fatality Entries
Engine NHTSA category: ENGINE 76 0 0 0 0
Engine & Cooling NHTSA category: ENGINE AND ENGINE COOLING 17 0 0 0 0
POWER TRAIN,ENGINE 17 0 0 0 0
Powertrain NHTSA category: POWER TRAIN 13 0 0 0 0
Fuel & Propulsion System NHTSA category: FUEL/PROPULSION SYSTEM 9 0 0 0 0
ENGINE,FUEL/PROPULSION SYSTEM 6 0 0 0 0
Forward Collision Avoidance NHTSA category: FORWARD COLLISION AVOIDANCE 5 0 0 3 0
Air Bags NHTSA category: AIR BAGS 3 1 0 1 0
Electrical System NHTSA category: ELECTRICAL SYSTEM 3 0 0 0 0
Fuel System NHTSA category: FUEL SYSTEM, GASOLINE 3 0 0 0 0
POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM 3 0 0 0 0
Other / Uncategorized NHTSA category: UNKNOWN OR OTHER 3 0 0 1 0
ENGINE AND ENGINE COOLING,ENGINE 2 0 0 0 0
POWER TRAIN,ELECTRICAL SYSTEM,ENGINE 2 0 0 0 0
POWER TRAIN,FUEL/PROPULSION SYSTEM 2 0 0 0 0
POWER TRAIN,VEHICLE SPEED CONTROL,ENGINE 2 0 0 0 0
Suspension NHTSA category: SUSPENSION 2 0 0 0 0
VEHICLE SPEED CONTROL,ENGINE,FUEL/PROPULSION SYSTEM 2 0 0 0 0
Visibility / Glass NHTSA category: VISIBILITY 2 0 0 0 0
Visibility & Wipers NHTSA category: VISIBILITY/WIPER 2 0 0 0 0
CHEST CLIP, BUCKLE, HARNESS 1 0 0 0 0
ELECTRICAL SYSTEM,AIR BAGS 1 0 0 0 0
ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM 1 0 0 0 0
ELECTRICAL SYSTEM,LANE DEPARTURE,BACK OVER PREVENTION 1 0 0 0 0
ELECTRICAL SYSTEM,SEAT BELTS 1 0 0 0 0
ELECTRICAL SYSTEM,STRUCTURE 1 0 0 0 0
ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,ENGINE 1 0 0 0 0
ELECTRICAL SYSTEM,VISIBILITY/WIPER 1 0 1 0 0
ENGINE AND ENGINE COOLING,POWER TRAIN 1 0 0 0 0
ENGINE AND ENGINE COOLING,POWER TRAIN,ENGINE 1 0 0 0 0
EXTERIOR LIGHTING 1 0 0 0 0
FUEL SYSTEM, GASOLINE,POWER TRAIN 1 0 0 0 0
POWER TRAIN,SEAT BELTS,ENGINE 1 0 0 0 0
POWER TRAIN,SERVICE BRAKES,ENGINE 1 0 0 0 0
POWER TRAIN,VEHICLE SPEED CONTROL,UNKNOWN OR OTHER 1 0 0 0 0
Seat Belts NHTSA category: SEAT BELTS 1 0 0 0 0
Service Brakes NHTSA category: SERVICE BRAKES 1 0 0 0 0
SERVICE BRAKES,ENGINE,FUEL/PROPULSION SYSTEM 1 0 0 0 0
SERVICE BRAKES,FORWARD COLLISION AVOIDANCE 1 0 0 0 0
Steering NHTSA category: STEERING 1 0 0 0 0
STEERING,ENGINE,FUEL/PROPULSION SYSTEM 1 0 0 0 0
STEERING,SERVICE BRAKES 1 0 0 0 0
STEERING,SUSPENSION,WHEELS 1 0 0 0 0
Structure & Body NHTSA category: STRUCTURE 1 0 0 0 0
SUSPENSION,ELECTRICAL SYSTEM 1 0 0 0 0
SUSPENSION,POWER TRAIN,ENGINE 1 0 0 0 0
SUSPENSION,UNKNOWN OR OTHER,ENGINE 1 0 0 0 0
UNKNOWN OR OTHER,ENGINE 1 0 0 0 0
UNKNOWN OR OTHER,ENGINE,FUEL/PROPULSION SYSTEM 1 0 0 0 0
VEHICLE SPEED CONTROL,SERVICE BRAKES,FORWARD COLLISION AVOIDANCE 1 0 0 0 0
VISIBILITY/WIPER,LANE DEPARTURE 1 0 0 0 0
Wheels & Hubs NHTSA category: WHEELS 1 1 0 0 0
Data Attribution & Reporting Methodology: Complaints are unverified voluntary submissions to the NHTSA Office of Defects Investigation (ODI). Because multiple vehicle components can be cited within a single owner complaint submission, component-level rollups may sum to more than the unique complaint count (206). Injury and fatality entries in the detailed table reflect raw values entered by reporting consumers across individual submissions; they are not deduplicated casualty statistics and may include duplicate or unverified entries. Complaint volume is not normalized for sales volume or vehicle mileage and does not represent an audited component failure rate.
Official US Government Data Provenance

The complaint records on this page are retrieved directly from the NHTSA Office of Defects Investigation (ODI) public database.

Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.