The 2022 Chevrolet Silverado offers multiple engine options including the 4.3L V6, 5.3L V8, and 6.2L V8—all featuring cylinder 6. When P0306: Cylinder 6 Misfire Detected appears, your Silverado has identified combustion problems specifically in cylinder 6 of the V6 or V8 configuration.
Silverado V6 and V8 Engines
The 2022 Silverado's V6 and V8 engines position cylinder 6 according to GM's traditional cylinder numbering. The V8 engines feature Dynamic Fuel Management (DFM) or Active Fuel Management (AFM), which can deactivate cylinders—including cylinder 6—under light load conditions.
Common P0306 Causes
AFM/DFM-related wear can cause uneven cylinder performance over time. Ignition coil degradation affects cylinder-specific spark delivery. Spark plug wear reduces combustion consistency. Direct injection (on 5.3L and 6.2L) allows carbon buildup potential. Fuel injector issues disrupt proper fuel atomization. Lifter issues related to cylinder deactivation can affect valve operation.
Diagnostic Protocol
Scan for all codes including AFM/DFM system faults on V8 engines. Access cylinder 6 and inspect the ignition coil for damage. Remove and evaluate spark plug condition. Test fuel injector operation. On V8s, check for lifter-related codes or symptoms. Perform compression testing to verify mechanical health.
Truck Duty Reliability
The Silverado's workhorse engines are designed for demanding use. Proper diagnosis and quality repairs restore full capability for towing, hauling, and daily driving.