The P0275 code on your 2022 GMC Yukon indicates that cylinder 5 is not contributing its expected share of power compared to other cylinders. The Yukon's V8 engine needs all eight cylinders working properly for its full-size SUV duties.
Yukon Engine Configuration
The 2022 GMC Yukon offers the 5.3L V8 (355 hp), 6.2L V8 (420 hp), or 3.0L Duramax turbo-diesel (277 hp). The V8s have cylinder 5 on the driver's side bank, front position. The diesel's inline-6 has cylinder 5 as the fifth from front. Understanding your engine helps locate the problem.
What Contribution Balance Means
The ECM monitors crankshaft acceleration during each power stroke. When cylinder 5 contributes noticeably less acceleration than other cylinders, this code sets. The cause could be compression loss, fuel delivery problems, or ignition component failure (on gas engines).
Diagnostic Process
Identify your engine first. For V8s, locate cylinder 5 on the driver's side. Test compression and compare to other cylinders. Check the ignition coil and spark plug (gas engines). Verify injector operation. On V8s with AFM/DFM (cylinder deactivation), ensure that system isn't affecting cylinder 5 operation improperly.
Repair Solutions
Gas engine coils and plugs are common fixes. Injector failures occur but less frequently. Compression issues indicate internal wear. DFM-related problems may require specific diagnosis of that system. After repair, verify balanced contribution through scan tool monitoring.