250KMile ratingKnown issues to check on the 2021 GMC Yukon XL
One widely reported problem pattern applies to this model year. That does not mean this car has the fault — many were fixed under warranty or recall — but it is what to check, and what to ask the seller for, before you buy.
- 5.3L V8 (Active Fuel Management)Expensive if it bites
The Gen V 5.3 V8 with cylinder deactivation is widely reported for collapsed AFM lifters, wiped camshaft lobes and heavy oil consumption, usually announced by a persistent tick.
What to check: Start it stone cold and listen for a tick or misfire. Ask for oil consumption history and whether lifters or the camshaft have been replaced; an AFM delete or a documented lifter job is a plus, not a red flag.
Patterns are drawn from NHTSA recalls and complaints, manufacturer service bulletins and consistent owner reporting. Always confirm open recalls against the VIN and get an independent pre-purchase inspection.
What owners of the 2021 Yukon XL say
Owner reviews for this exact model year are the fastest way to find out what breaks, what it costs to fix and whether the car lives up to the spec sheet.
Partner links — Caboose may earn a commission if you buy through them, at no cost to you. It never affects which cars we list.
About this car
The GMC Yukon XL is No. 39 on the Caboose longevity table: 8.6% of them reach 250,000 miles, against 5.4% of all vehicles. This 2021 GMC Yukon XL SLT RWD is listed at $31,483, about $1,258 below the CarGurus expected market price of $32,741. It has 108,031 miles and comes in White. Power comes from a 355 hp 5.3L V8 with 4x2, rated around 17 MPG combined. It is offered by Go Smart Car Sales LLC in Winter Garden, FL.
Why it's a good buy
- 8.6% of GMC Yukon XLs reach 250,000 miles — No. 39 of 52 on the Caboose table
- 91,969 miles of runway before 200,000
- 4% below market price ($1,258 savings)
- Leather Seats
- Sunroof/Moonroof
- Power Package
Features
Get it road-ready
The usual first-week purchases for a 2021 GMC Yukon XL, from partners we trust.
Partner links — Caboose may earn a commission if you buy through them, at no cost to you. It never affects which cars we list.
Similar great deals
250KMile rating
250KMile rating
250KMile rating
250KMile rating
250KMile rating