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  1. Engine & Drivetrain
    Hey guys, im new to this forum but i would appreciate any help. Im working on a family members 2011 buick enclave. She called and said the truck wasn't running so when i checked it out the rear cylinder head catalytic converter was clogged. I pulled the o2 and the truck started up so i replaced...
  2. Engine & Drivetrain
    I have a 2009 Buick Enclave, we paid like 4k$ thought it was steal. Apparently I was wrong it has a lot of miles 170k+ But there is no rust no dents no hail damage the interior is nice and I’d love to get this car working correctly. When I first got it it would shudder at about 1800 rpm going up...
  3. Buick Enclave
    2009 Buick Enclave CXL AWD with 98k. I have a noticeable misfire with codes reading misfire on cylinders 1,3 and 5. All coils have been replaced and all plugs are new. I also get a code reading catalyst system below effective threshold. I replaced the O2 sensor on the back side, pre catalytic...
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