250KMile ratingKnown issues to check on the 2021 GMC Yukon
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 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.
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About this car
The GMC Yukon is No. 42 on the Caboose longevity table: 7.7% of them reach 250,000 miles, against 5.4% of all vehicles. This 2021 GMC Yukon AT4 4WD is listed at $35,716, about $1,942 below the CarGurus expected market price of $37,658. It has 103,123 miles and comes in Steel Metallic. Power comes from a 355 hp 5.3L V8 with four-wheel drive, rated around 16 MPG combined. It is offered by Mike Calvert Ford of Houston in Houston, TX (franchise dealer).
Why it's a good buy
- 7.7% of GMC Yukons reach 250,000 miles — No. 42 of 52 on the Caboose table
- 96,877 miles of runway before 200,000
- 5% below market price ($1,942 savings)
- Leather Seats
- Sunroof/Moonroof
- Power Package
Features
Get it road-ready
The usual first-week purchases for a 2021 GMC Yukon, from partners we trust.
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