Edmunds Answers



  • 83elcamino 10/11/10 9:38 pm PST

    thers a lot of variables here but what sticks out most in my mind would be a possible injector but without a gm tech II testing isnt easy other than swaping it out and seeing if the misfire moves. that is of course if its only the #6 cylinder misfiring. but most of what i see is plug wire or injector other than that you get into wiring to the injector vacum leaks and such.

  • mrsdacruz84 07/09/13 11:47 am PST

    I had same issue with my 2005 Envoy and it ended up being worn vavle seats on #6 had to have dealer fix it has been reported several issued with #6 I believe its a manufacturing problem- veru costly fix


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