The redesigned 2024 GMC Acadia features a new turbocharged engine delivering refined performance and efficiency. When a P0304 code appears indicating a cylinder 4 misfire, understanding this new powertrain helps target diagnosis effectively on this thoroughly updated crossover.
Understanding P0304 in the 2024 Acadia
The 2024 Acadia introduced a new turbocharged four-cylinder engine option alongside the available 2.5L naturally aspirated engine. For turbo models, cylinder 4 is at the rear of the inline-4 engine. The engine control module monitors combustion events through crankshaft position analysis to detect misfires with precision.
New Platform Considerations
The 2024 Acadia represents a complete redesign, and first-year production may benefit from technical service bulletins addressing various concerns. Misfires on new vehicles are uncommon and typically indicate manufacturing defects covered under warranty. Software calibration updates may also be available.
Diagnostic Approach
Identify your engine configuration—turbo or naturally aspirated—as diagnosis may differ. Access the cylinder 4 ignition coil. Inspect spark plug condition. On turbo models, check for boost leaks that could cause lean conditions. Verify all software updates have been applied.
Resolution Path
Warranty coverage applies to 2024 models. Have your GMC dealer diagnose using factory equipment and current technical information. Component failures causing P0304 should be covered under powertrain warranty. New vehicle owners should utilize dealer diagnosis services.