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  1. Engine & Drivetrain
    P0420 is the intermittent code. Replaced both O2 sensors about a month ago. The light comes on for about a day and then goes off again for another 500+ miles. This has happened twice now. Perhaps the catalytic converter is on its way out. Perhaps it is an electrical issue. Any input is...
  2. Engine & Drivetrain
    Hey everyone. I’m currently have a problem with my terrain. It started when I took off from a intersection and the engine started misfiring flashing engine light. Engine reduced power, Stabilitrack light came on. When I check the codes it has a P0340,P0365 followed by a P0300. I’ve looked at...
    cel
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