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ProblemsByVinFile / 2021-GMC-YUKONNHTSA data synced 13 hours ago
GMC
2021 GMC Yukon problems
The 2021 GMC Yukon has 323 NHTSA owner complaints and 13 active recall campaigns on file. Here's the breakdown — what's serious, what's noise, and what a working mechanic would actually do about it.
The 2021 GMC Yukon has 323 NHTSA owner complaints and 13 recalls on file (U.S. federal records, as of September 2026). The most-reported system is engine at 163 complaints (~$3,100 to repair). Source: NHTSA Office of Defects Investigation.
Below average for the segment. Multiple systems have recurring complaints.
0
Critical
13
Severe
0
Moderate
Should you avoid this 2021 Yukon?
High-risk ownership
Repair exposure runs above average — only with money set aside and eyes open.
Reliability score 4.6/10 — below the segment average
13 recall campaigns on file
Our read of the federal NHTSA complaint and recall record for this exact year and model —
not a substitute for a pre-purchase inspection. How we score.
NHTSA crash-test safety ratings
4 / 5 overall
Overall★★★★★4/5
Frontal crash★★★★★4/5
Side crash★★★★★5/5
Rollover★★★★★3/5
Driver-assist features on the tested model:
Electronic stability control: Standard · Forward collision warning: Standard · Lane departure warning: Optional
Source: NHTSA New Car Assessment Program — tested configuration: 2021 GMC Yukon SUV 4WD. Stars rate crash protection in NHTSA's tests, not overall reliability — see the owner-complaint data below for what actually goes wrong.
Buying a used 2021 GMC Yukon? Check these first
Here's what this model is known to do — so you can inspect for it, price it in, or
make the seller fix it before you sign.
What to inspect on this specific car
engine — 163 owner reports
· ~$3,100 to fix
powertrain — 45 owner reports
· ~$2,500 to fix
electrical — 20 owner reports
· ~$850 to fix
airbags — 12 owner reports
· ~$1,100 to fix
⚠ The one to take seriously: electrical is flagged
severe on this model
.
Inspect it closely on a test drive.
Recalls to confirm are done
Run the VIN from the listing — 13 active recalls on this model. Recall repairs are always free.
Verdict for buyers: 4.6/10 model. The priciest documented failure is
engine (~$3,100) — get the
seller's service records for it or inspect closely. Otherwise an average-risk used buy at a fair price.
We tell you what this model is known for and what to inspect — a vehicle-history report
tells you what this exact car has been through. Smart buyers get both.
A noise, a warning light, a repair quote, "should I buy this?" — get an answer grounded in
this vehicle's actual NHTSA record, not generic advice.
Dash light, leak, worn part — snap it and we'll read it against this car's record.
Photo attached — type a question or just hit Ask.
Answers use this vehicle's NHTSA complaint & recall record — owner-reported and unverified, not a diagnosis. Verify anything safety-critical with a mechanic.
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What owners are saying
recent NHTSA-filed complaints · verbatim
2021 Yukon· engine
Driving the vehicle on the highway when I started to hear a ticking sound from the engine. After a few minutes, the check engine light came on and started flashing, traction control shut off and some system related to the rear end shut off. After inspection, it appears to have…
Vehicle: 2021 GMC Denali Mileage: ~48,000 miles Purchase Price: $62,000 Issue: Airbags & crash sensors failed to deploy Complaint Text: I am filing a safety complaint regarding my 2021 GMC Denali. I was involved in a rear-end collision at approximately 45 mph, where I struck…
The contact owns a 2021 GMC Yukon. The contact stated that while driving at an undisclosed speed, the contact noticed that the front windshield was extremely blurry. In addition, the contact stated that it was a safety failure, especially while driving at night. The contact…
Had a problem with your 2021 GMC Yukon?
File a complaint with NHTSA → It's free and official — owner filings are what build the federal safety record behind this page.
Estimate your repair exposure
Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
General Motors LLC (GM) is recalling certain 2021-2024 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles equipped with a 6
Engine failure increases the risk of a crash.
Fix: Dealers will inspect the engine, and as necessary, repair or replace the engine. For vehicles that pass inspection, dealers will add higher viscosity oil, install 6 oil fill cap, replace the oil filter, and update the owner's manual. Repairs will be performed free of charge. Owner notification letters were mailed June 18, 2025. Owners may contact Cadillac customer service at 1-800-333-4223, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is N252494000.
General Motors, LLC (GM) is recalling certain 2020-2022 Chevrolet Silverado 1500, 2500, 3500, GMC Sierra 1500, 2500, 3500, 2021 Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, Suburban, GMC Yukon, and Yukon XL vehicles equipped with diesel engines
Rear wheel lock-up can increase the risk of a crash.
Fix: Dealers will install new transmission control module software, free of charge. GM will provide a special coverage program to cover the repair of transmissions that are identified by the remedy software as containing a defective control valve. Owner notification letters were mailed December 12, 2024. Owners may contact GM customer service at 1-888-988-7267, Cadillac customer service at 1-800-458-8006, GMC customer service at GMC 1-800-462-8782 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N242454440.
General Motors, LLC (GM) is recalling certain 2021 Yukon, Yukon XL, Chevrolet Tahoe, Chevrolet Suburban, Cadillac Escalade, and Cadillac Escalade ESV vehicles
Daytime Running Lights that do not deactivate as intended may cause a glare, reducing visibility and increasing the risk of a crash.
Fix: Dealers will provide an over-the-air (OTA) update for the Body Control Module software, free of charge. Owner notification letters were mailed December 15, 2022. Owners may contact GM customer service at 1-888-988-7267, Chevrolet customer service at 1-800-222-1020, or Cadillac customer service at 1-800-458-8006. GM's number for this recall is N222382220.
It's got known weak points. With a reliability score of 4.6 out of 10 based on 323 owner complaints filed with NHTSA, the 2021 GMC Yukon has a higher-than-average rate of reported issues. The areas to watch are listed above. Whether it's worth owning depends on price, condition, and how much repair exposure you can absorb.
Should you avoid the 2021 GMC Yukon?
The 2021 GMC Yukon is a higher-risk ownership prospect. Repair exposure runs above average — only with money set aside and eyes open. The record behind that call: Reliability score 4.6/10 — below the segment average; 13 recall campaigns on file. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.
What should I check before buying a used 2021 GMC Yukon?
Inspect the engine first — it's the most-reported issue on this model, with 163 owner complaints filed. Average repair cost runs about $3,100 at an independent shop. Also confirm any open recalls have been completed by running the VIN, and ask for service records covering the problem areas listed above.
Is the 2021 GMC Yukon a good used car to buy?
It scores 4.6 out of 10 on our NHTSA-based read of 323 owner complaints. The main thing to watch is engine. Priced fairly and clean on inspection, it's a reasonable used buy. Our data covers what this model is known for — pair it with a vehicle-history report on the VIN to see what that specific car has been through.
What's the most common problem on the 2021 GMC Yukon?
Based on NHTSA records, the most-reported issue is engine, with 163 complaints filed. Average repair cost runs about $3,100 at an independent shop.
What's the most expensive thing that goes wrong?
The engine is one of the costlier repair items. Average repair cost runs about $3,100 at an independent shop. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my GMC Yukon has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2021 GMC Yukon?
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 323 complaints on file and the costliest repair averaging $3,100, one major failure more than pays for it. The catch is reading the contract — many providers exclude wear items and require pre-authorization, so cheaper plans are not always better value.
Recall and complaint data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database, last synced 13 hours ago. Verify the raw federal record at
nhtsa.gov/vehicle/2021/GMC/Yukon.
Editorial commentary written by ProblemsByVin contributors and reviewed by ASE-certified mechanics.
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