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p0440 p0300 misfire

  1. OEM Issues
    Okay so I purchased a used 2003 Chevrolet Trailblazer LT on March 1 for a really good price that had 184400 miles on the clock. About a month after i purchased the vehicle i got a P0440 code that would pop up intermittently. I also noticed a Clicking noise that seemed to be coming from the...