Owners have filed 11 complaints with NHTSA about this car, most about the engine and transmission. The 6 checks below target those problems, in the order you would do them at the car.
2026Tick items off on your phone at the car, or print it. Ticks stay on this device.
0/6 checked
2026 GMC Yukon: inspection sheet
Before you go, or before you touch the car0/2
Ask the seller not to warm the car up first0/1
At least 20 minutes, with some highway0/3
These checks are specific to this model year. For tires, body panels, fluids, and the other basics every used car needs, use the general inspection guide.
Nearby years usually share most parts, so their problems are worth checking on this car too.
Worth adding to your 2026 checks
Worth adding to your 2026 checks
EPA figures for each version of the 2026 GMC Yukon. Use them to confirm you are looking at the version that was advertised, and as a yardstick on the test drive.
| Version | Drive | EPA rating |
|---|---|---|
| 5.3L 8-cylGas | 4WD, RWD | 17 mpg |
| 6.2L 8-cylGas | 4WD, RWD | 16–17 mpg |
| 3.0L 6-cylDiesel | 4WD, RWD | 22–23 mpg |
Owners report these failures starting around the mileages below. A car inside one of these ranges deserves a closer look at that part, or records showing it was already fixed.
Sudden engine failure, no restart
2,200–5,200 miles
NHTSA complaints for the 2026 GMC Yukon, grouped by the part owners named. Open a row to read what goes wrong.
Sudden, total failure hits nearly new trucks, often with little or no warning. Reports describe a check engine light and rough running before a stall, a shutdown on the highway or at a red light, and an abnormal cold-start noise that fades once warm. The truck will not restart, and dealers replace the whole engine. Failures cluster between 2,200 and 5,200 miles, and one involves the diesel. A highway stall with no restart is a real crash risk. GMC covers the replacement, but repair waits can stretch to almost a month.
Power drops suddenly at speed, and then the engine fails. Reports describe a "decreased acceleration" warning with loud knocking from the engine, and a stall near 55 mph with a "Shifting to Neutral" message on the instrument panel. In both cases the dealer calls for a new engine, at roughly 3,000 to 3,303 miles. Losing power at highway speed raises crash risk. Owners link the problem to a recall on earlier model years, but these 2026 trucks fall outside it, and one VIN was confirmed as not covered.
Excerpts from complaints Yukon owners filed with NHTSA, as written. Listen for the same symptoms on your test drive.
Vehicle engine stopped working at 5200 miles. Was driving on highway and immediately stopped. Vehicle would not start. Towed to dealership and next day dealer confirmed that the engine needed to be replaced.
Filed with NHTSA, January 2026
Engine failure while driving 75 miles per hour in highway in brand new Yukon Denali. 3,000 miles and got a “decreased acceleration” warning. Then couldn’t accelerate and loud knocking noise from the engine, likely a lifter issue. I will have to get a new engine according to GMC. Unbelievable. Recall was for 2021-2024, but my 2026 is havin the same issue.
Filed with NHTSA, February 2026
Complaints for this year next to the average for the other model years, area by area.
The 2026 has the fewest owner complaints of the 9 Yukon years we cover, well under the average of the others. Newer years have had less time to collect complaints, so compare like with like.
Cars shoppers compare with the GMC Yukon, with their own 2026 checklists.
2026 owner complaints, side by side
