Free used car buyer guide / T1XX / fifth generation / 2021-2025
GMC Yukon common problems and best years
By BYBA Research - how we score cars
Updated 2026-06-12
BYBA Buy Score
6.9/10
1 walk-away risk, 2 serious faults, 5 minor faults documented for this generation, weighted by severity and repair cost. Biggest factor: 6.2 l87 connecting rod/crankshaft engine failure. Score methodology.
The 2021-2025 GMC Yukon is the premium-feeling version of GM's full-size SUV, but Denali trim puts many buyers directly into the 6.2 risk zone. The costly traps are 2021-2024 L87 6.2 bearing/crank failure under NHTSA 25V274, DFM lifter collapse on both V8s, diesel transmission-control-valve wheel-lockup recall coverage, 2021 fuel-pump power-control-module stalling, roof/sunroof water leaks, third-row belt recalls, and Air Ride Adaptive Suspension faults. The safest money is a 2023-2025 5.3 SLT/AT4 without Air Ride problems, or a 3.0 Duramax Denali/Yukon XL that has diesel-use records and closed recalls. Current owners should keep a dealer-grade paper trail because Yukon resale values are high enough that buyers will challenge every engine, suspension and water-leak story.
Faults covered
8
Highest risk
6.2 L87 connecting
Best years
2023-2025
Best buys
- 2023-2025 5.3 SLT or AT4 with clean scan, dry cabin and no Air Ride warning history.
- 3.0 Duramax Denali/Yukon XL for highway-heavy families with DEF and TCM records.
- 2025 refresh truck with simple suspension and full first-owner maintenance file.
Inspect hard
- Denali 6.2: 25V274 status, oil/filter inspection, knock and engine-replacement details.
- Yukon XL sunroof trucks: all three rows of carpet and headliner corners.
- Air Ride/Magnetic Ride trucks: height modes, compressor cycles and chassis module scan.
Avoid
- 6.2 with unresolved recall status or lower-end knock.
- V8 with hot tick, P030x or repeated lifter repair.
- Wet cabin, third-row belt recall not closed, or diesel with DEF countdown history.
Next checks
Before you contact the seller
Check the car's history first. Then bring the right tools if it still looks worth viewing.
Primary next step
Check history, title, and recall status
The faults above matter more if the car also has accident history, finance flags, missing service records, or open safety recalls.
Viewing kit
Bring the right tools
Four cheap tools catch most of the faults on this page at a GMC Yukon viewing.
Printable workflow
Take the inspection pack
The PDF is the ordered checklist for the viewing: documents, walk-around, test drive, and scan.
Open PDF optionSome links here are partner links. If you buy through one, BYBA earns a commission. The price you pay does not change. How we make money.
Engines and trims
Which GMC Yukon should you buy?
On most used cars, the engine and trim choice changes the risk more than the mileage does. Narrow this down before you start viewing cars.
5.3L L84 V8 with DFM
2021-2025
BEST NON-DENALI PICK
The 5.3 gives most Yukon owners enough power and sidesteps the 6.2 bearing recall headline. It still needs DFM lifter discipline and clean oil records.
6.2L L87 V8
2021-2025
DENALI RISK ENGINE
The 6.2 is tied closely to Denali appeal, but 2021-2024 recall coverage means the nicest spec can be the riskiest buy without hard documents.
3.0L Duramax LM2/LZ0 diesel
2021-2025
BEST XL / LONG-RUN ENGINE
The diesel suits Yukon XL road trips and high annual mileage. It must be scanned for emissions and transmission recall history, and it dislikes short-trip luxury-SUV use.
10L80 ten-speed automatic
2021-2025
CHECK SOFTWARE AND VALVE HISTORY
Good Yukons shift smoothly, but diesel and ETRS recall actions show that a full TCM scan is part of buying one, especially on expensive Denali stock.
Year notes
Year-by-year buyer advice
Use this to narrow the search before you spend time travelling to view a car.
2021
New T1XX Yukon launches with independent rear suspension, larger cabin, diesel option, Denali interior split and early recall workload.
Buyer: Only buy a 2021 with full recall, fuel pump module, roof leak and module update history.
Owner: Keep every dealer visit record; launch-year software and hardware fixes shape resale.
2022
Feature availability expands and third-row belt/supplier safety actions remain central.
Buyer: Check seat-belt, transmission and Air Ride history before judging trim.
Owner: Close restraint and transmission actions before using it as primary family transport.
2023
Production maturity improves; 6.2 recall risk still applies to many Denali builds.
Buyer: A clean 5.3 AT4/SLT may be smarter than a questionable Denali 6.2.
Owner: Keep oil records and scan early if tick or rough idle appears.
2024
Last core pre-refresh year and part of the major L87 recall window.
Buyer: Run the VIN on every 6.2, even low-mile dealer stock.
Owner: Save recall letters, dealer messages and engine inspection paperwork.
2025
Refreshed Yukon brings updated tech and cabin changes; drivetrain inspection remains familiar.
Buyer: Do not let the new screen distract from V8, diesel, water and suspension checks.
Owner: Maintain a clean first-owner file; 2025 values will depend on documentation.
Common problems
Faults to check before buying
What fails, what it looks like, what it costs, and the quick checks you can do at the viewing - ranked by how badly each one can hurt you.
Fault 1
6.2 L87 connecting rod/crankshaft engine failure
Affects
Certain 2021-2024 Yukon and Yukon XL 6.2 L87 under 25V274.
Symptoms
Knock, check-engine light, reduced propulsion, low oil pressure, seizure, engine block damage.
Typical repair cost
EUR 0 if covered; EUR 8,000-15,000+ retail.
Codes / scan clues
Misfire, oil pressure and cam/crank correlation codes vary.
Root cause: Manufacturing defects in connecting rod and/or crankshaft components can cause bearing failure and loss of propulsion.
Quick check
- Run VIN for 25V274 and later GM updates.
- Listen for lower-end knock on cold and hot starts.
- Ask for oil/filter inspection or engine replacement records.
- Check if any failure occurred after recall service.
Buyer note
A Denali 6.2 is a VIN-first purchase.
Owner note
Tow the truck after knock; do not limp it home.
Fault 2
DFM lifter collapse on 5.3 and 6.2
Affects
2021-2025 Yukon 5.3 L84 and 6.2 L87.
Symptoms
Tick, rough idle, P030x, reduced power, recent top-end repair.
Typical repair cost
EUR 2,500-6,000 lifter/cam work; EUR 8,000+ severe engine repair.
Codes / scan clues
P0300-P0308, P3400-series, P3497.
Root cause: Dynamic Fuel Management lifters can fail and damage cam lobes if the vehicle is driven with misfire.
Quick check
- Scan misfire counters.
- Listen hot at idle.
- Read invoices for cam and both-bank inspection.
- Check oil-service history.
Buyer note
A quiet 5.3 can be the better Yukon than a ticking 6.2.
Owner note
Do not dismiss tick because the truck still drives.
Fault 3
Diesel 10-speed rear-wheel-lockup recall
Affects
2021 Yukon/Yukon XL 3.0 diesel under 24V797; certain 2022 SUV transmission actions also relevant.
Symptoms
Harsh shift, check-engine light, gear limitation, possible wheel lockup.
Typical repair cost
EUR 0 software action; EUR 2,000-5,500 valve body/transmission repair.
Codes / scan clues
P0700 and transmission valve/performance codes vary.
Root cause: Worn transmission control valve can create a pressure/shift condition that risks rear-wheel lockup.
Quick check
- VIN-check 24V797 and later related actions.
- Scan TCM history.
- Test warm downshifts.
- Ask if any valve body repair followed recall software.
Buyer note
A diesel Yukon needs TCM proof before purchase.
Owner note
Do not ignore fifth-gear limitation; it is the software warning path.
Fault 4
Fuel pump power control module stalling
Affects
Certain 2021 Yukon/Yukon XL under GM N212332040 / 21V739.
Symptoms
Unexpected stall, crank/no-start, intermittent fuel pump operation, tow-in.
Typical repair cost
EUR 0 under recall; EUR 300-900 retail module diagnosis.
Codes / scan clues
P023F, P025A, low fuel pressure and module communication faults.
Root cause: Fuel pump power control module can fail or operate intermittently.
Quick check
- Run VIN for 21V739 completion.
- Ask about any stall or no-start.
- Scan fuel pump module history.
- Confirm replacement invoice if included.
Buyer note
A 2021 Yukon with a fuel-stall story needs exact repair records.
Owner note
Repeat no-starts after recall work deserve immediate diagnosis.
Fault 5
Sunroof drain and roof water leak
Affects
2021-2025 Yukon and Yukon XL, strongest concern on sunroof-equipped early builds.
Symptoms
Water at A-pillars, wet carpet, headliner drip, mildew, module warnings after rain.
Typical repair cost
EUR 150-800 drain/grommet fix; EUR 1,000-3,500+ with drying/modules.
Codes / scan clues
Body/network U-codes, camera/telematics/restraint faults possible.
Root cause: Drain grommet routing and roof sealing issues can route water into the cabin instead of outside.
Quick check
- Inspect front and rear carpets, not only visible mats.
- Check A-pillar trim and headliner corners.
- Water-test drains if allowed.
- Scan modules for water-related history.
Buyer note
A wet Yukon XL hides water well because the cabin is so large.
Owner note
Fix leak source and dry padding before mould and module faults develop.
Fault 6
Air Ride Adaptive Suspension and Magnetic Ride faults
Affects
2021-2025 Yukon AT4/Denali/Denali Ultimate depending equipment.
Symptoms
Service leveling message, corner sag, compressor running, height mode failure, harsh ride.
Typical repair cost
EUR 400-900 sensor/calibration; EUR 900-1,800 compressor; EUR 2,500-5,000+ multi-part repair.
Codes / scan clues
Ride-height sensor, compressor circuit and chassis-control codes.
Root cause: Air springs, compressor, lines and adaptive dampers add cost and cold-weather sensitivity versus coils.
Quick check
- Cycle all height modes.
- Park overnight and measure corners.
- Listen for repeated compressor operation.
- Scan suspension modules.
Buyer note
A Denali with sick Air Ride can cost more to sort than a lower-trim Yukon is worth upgrading from.
Owner note
Address leaks before the compressor fails from overwork.
Fault 7
Third-row seat belt buckle/routing recalls
Affects
2021-2022 Yukon and Yukon XL with third-row seating.
Symptoms
Open recall, damaged webbing, buckle looseness, belt trapped by folding mechanism.
Typical repair cost
EUR 0 under recall; EUR 250-800 retail.
Codes / scan clues
Usually none unless restraint module logs buckle/pretensioner fault.
Root cause: Early assembly and supplier issues could reduce third-row belt retention or damage belt routing.
Quick check
- VIN-check restraint recalls.
- Inspect belt routing with seats folded and raised.
- Latch and pull each third-row belt.
- Confirm final repair, not just inspection.
Buyer note
A Yukon bought for people-carrying needs restraint paperwork before delivery.
Owner note
Store belt recall records with service history.
Fault 8
3.0 Duramax DEF/NOx and short-trip issues
Affects
2021-2025 Yukon/Yukon XL 3.0 Duramax.
Symptoms
DEF countdown, NOx efficiency fault, reduced speed, DPF soot load, long crank.
Typical repair cost
EUR 500-1,800 sensors/DEF components; more if DPF or oil-belt service overlaps.
Codes / scan clues
P20EE, P2201, P2463, P249D, P06DD.
Root cause: Diesel aftertreatment needs hot operation and good DEF; luxury short-trip use creates repeated incomplete cycles.
Quick check
- Scan aftertreatment readiness and permanent codes.
- Ask whether it was used for highway trips or errands.
- Check for delete/tune evidence.
- Confirm transmission recall software as part of diesel audit.
Buyer note
The diesel Yukon XL is excellent for road miles, poor for short urban errands.
Owner note
Let regenerations complete and handle DEF warnings before no-start countdown.
Inspection pack
Printable checklist for the viewing
The free page helps you decide whether the car is worth seeing. The paid guide is the ordered, printable checklist you use at the car.
- VIN report for 25V274, 24V797, 21V739 and belt recalls.
- Oil records and any engine/lifter invoices.
- Diesel DEF/NOx and TCM records where relevant.
- Roof leak and suspension repair invoices.
- Inspect roof, A-pillars, all carpets and cargo floor.
- Measure ride height and inspect tyres for uneven wear.
- Look for oil, coolant, DEF and transmission leaks.
- Check hitch and rear suspension for towing abuse.
- Operate all third-row belts and seat folding.
- Test HVAC zones, cameras, infotainment and driver-assist features.
- Check for service suspension, transmission or reduced-propulsion messages.
- Separate top-end tick from lower-end knock.
- Warm-test 10-speed shift quality.
- Cycle Air Ride height modes.
- For diesel, include highway speed and emissions warning check.
Bottom line
Buy: Buy a clean 5.3 SLT/AT4 or a highway-used diesel Denali/Yukon XL with closed recalls. A 6.2 Denali is worth it only with a flawless VIN and engine file.
Avoid: Avoid unresolved 6.2 engines, hot-ticking V8s, diesel warning histories, wet cabins and Air Ride trucks with stored chassis faults.
Quick answers
GMC Yukon buyer questions
The short versions of what this page answers in full.
What are the most common GMC Yukon 2021-2025 problems?
The highest-impact documented faults are: 6.2 L87 connecting rod/crankshaft engine failure; DFM lifter collapse on 5.3 and 6.2; Diesel 10-speed rear-wheel-lockup recall. This guide covers 8 faults in total, each with symptoms, typical repair costs, and checks you can do at a viewing.
Which GMC Yukon years are the best to buy?
2023-2025 stand out in this generation. Buy a clean 5.3 SLT/AT4 or a highway-used diesel Denali/Yukon XL with closed recalls. A 6.2 Denali is worth it only with a flawless VIN and engine file.
Which GMC Yukon should I avoid?
Avoid unresolved 6.2 engines, hot-ticking V8s, diesel warning histories, wet cabins and Air Ride trucks with stored chassis faults.
Is the GMC Yukon 2021-2025 a reliable used buy?
BYBA scores it 6.9/10 (buy with checks). 1 walk-away risk, 2 serious faults, 5 minor faults documented for this generation, weighted by severity and repair cost. Biggest factor: 6.2 l87 connecting rod/crankshaft engine failure.
Get updates when this guide changes
Recalls get added, repair costs shift, and new fault patterns show up in the data. Leave an email and we'll tell you when the GMC Yukon guide gets a meaningful revision. Nothing else, no selling your address.
Research basis
- static.nhtsa.gov: RCLRPT-25V274-1598.PDF
- static.nhtsa.gov: RCLRPT-24V797-2072.PDF
- static.nhtsa.gov: MC-10184498-9999.pdf
- tahoeyukonforum.com
- newtahoeyukon.com
- m.carcomplaints.com: loss-of-motive-power-due-to-engine-failu-ea25007.shtml
- apnews.com: 3472a0a11e0b048ea4c43f7c438bf980
- gm-techlink.com: GM_TechLink_20_Mid-October_2020.pdf
- gm-trucks.com: 251598-lifter-problems-on-53-l-and-62-l-engines-8-cylinder
- go-parts.com
- static.nhtsa.gov: RMISC-24V797-1898.pdf
- caranddriver.com: chevy-gmc-cadillac-diesel-trucks-transmission-recall
- carcomplaints.com
- caranddriver.com: gm-fuel-pump-escalade-yukon-tahoe-suburban-recall
- vincheck.info: 2021
- newtahoeyukon.com: sunroof-leak-issue.336
- newtahoeyukon.com: recall-and-water-leak.96
- gm-techlink.com: GM_TechLink_01_January_2021.pdf
- tahoeyukonforum.com: air-ride-adaptive-suspension-failure-in-cold-climates.131839
- reddit.com: is_the_adaptive_air_suspension_worth_the_extra
- consumerreports.org
- consumerreports.org
- static.nhtsa.gov: RCRIT-22V617-0313.pdf
- newtahoeyukon.com: 2021-suburban-duramax-def-pump-issue.288
- gm-trucks.com: 393-2021-2026-tahoe-suburban-yukon-escalade