P0301 code on 06 Trailblazer with 42 6cyl Runs rough and check engine light blinks and then stays on 65,000 miles Answered by Trouble code P0301 means Cylinder 1 Misfire Detected I have a 02 Trailblazer and was told we do not have a fuel filter You can verify this by looking at your maintenance manual or better yetA code P0301 Chevrolet may mean that one or more of the following has happened Faulty spark plug or wire Faulty coil (pack) Faulty oxygen sensor(s) Faulty fuel injector Burned exhaust valve Faulty catalytic converter(s) Running out of fuel Poor compression Defective computer
Chevy Trailblazer P0302 Cylinder 2 Misfire Detected Drivetrain Resource
