2002 chevrolet code p0401 common cause?

  • Thread starter Thread starter Mike M
  • Start date Start date
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Mike M

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have cleaned passages and replaced valve is there a PCM update or other resolutions to this code
 
http://www.edmunds.com/maintenance/MaintenanceServlet

http://www.mycarstats.com/

http://www-odi.nhtsa.dot.gov/cars/problems/tsb/tsbsearch.cfm
 
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