The completely redesigned 2024 Chevrolet Colorado features turbocharged 4-cylinder engines exclusively—the 2.7L Turbo or 2.7L Turbo Plus. These inline-4 configurations contain only cylinders 1 through 4. When P0306: Cylinder 6 Misfire Detected appears, you're encountering an anomalous code.
Major Powertrain Change: No More V6
Previous Colorado generations offered V6 options where P0306 would indicate a legitimate misfire. The 2024 redesign eliminated all V6 options, making every Colorado a 4-cylinder truck. Cylinder 6 doesn't exist in any 2024 Colorado configuration.
Why This Erroneous Code Appears
Scanner databases designed for previous V6 Colorados may generate incorrect codes. Generic OBD-II scanners might misinterpret the new turbocharged engine protocols. Aftermarket devices can create communication conflicts. ECU learning processes on new platforms occasionally produce spurious codes.
Proper Diagnostic Approach
Clear all codes and drive through various conditions. Use GM GDS or professional equipment compatible with the new Colorado platform. Check for legitimate misfire codes (P0301-P0304) that would indicate actual 4-cylinder issues. Report persistent anomalies to your dealer for software updates.
New Platform Considerations
The 2024 Colorado's all-new platform benefits from comprehensive warranty coverage. Any diagnostic anomalies should be documented and addressed by GM dealers familiar with the new truck architecture.