Table 1 shows three common engine and engine cooling related problems of the 2020 GMC Yukon. The number one most common problem is related to the engine and engine cooling (37 problems). The second most common problem is related to the engine shut off without warning (one problem).
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling problems | |
| Engine Shut Off Without Warning problems | |
| Engine Cooling System problems |
We just purchased our Yukon from a dealership in February (2/7/26) and it was diagnosed with premature failure of at least one afm valve lifter as it is causing engine misfires, shaking and stalling on 7/30/26. We just hit 67,000 miles on the odometer so we are just beyond the warranty coverage. Read details...
Vehicle brakes would not operate properly, increased braking effort and message displayed on instrument cluster �service brake system�. This is the 4th time a beake issue has been experienced with a gm suburban/yukon vehicle. First 3 were on our 2017 Chevrolet suburban premier. Read details...
The contact owns a 2020 GMC Yukon xl. The contact stated that while driving 70 mph and attempting a lane change, the vehicle failed to accelerate as intended. The contact pulled over to the shoulder and restarted the vehicle, but the vehicle struggled to restart and failed to accelerate as needed. Read details...