When your 2022 Chevrolet Traverse displays the P0305 code, the engine control module has detected repeated misfires in cylinder 5. The 2022 Traverse is powered by the 3.6L V6 engine producing 310 horsepower. With six cylinders numbered 1-6, P0305 is a legitimate diagnostic code indicating an actual cylinder 5 misfire.
2022 Traverse Powertrain
The 2022 Traverse continues with GM's 3.6L High-Feature V6 (LFY) as its sole powertrain option. This engine features variable valve timing, direct fuel injection, and stop-start technology. The naturally aspirated V6 provides reliable power for this three-row crossover.
Cylinder 5 Location
On the transversely-mounted 3.6L V6, cylinder 5 is located on the rear bank (toward the firewall) in the center position. This placement can make access challenging, requiring removal of intake components or working from underneath in some cases.
Common Causes
Spark plug degradation is the primary cause, especially if the vehicle is approaching 100,000 miles without plug replacement. Ignition coil failure can occur at individual cylinders. Direct injection leads to carbon buildup on intake valves over time. Fuel injector issues, though less common, can cause lean misfires. Vacuum leaks around the intake affect specific cylinder air-fuel ratios.
Diagnostic Process
Read all codes and freeze frame data to understand misfire conditions. Access cylinder 5's spark plug on the rear bank and inspect for wear, electrode erosion, or fouling. Test the ignition coil. Check for vacuum leaks using smoke testing. On higher-mileage vehicles, consider intake valve carbon inspection.