2007 GMC Yukon drop from 8 to 4 cylinders

2007 GMC YUKON
9,000 MILES • V8 • 2WD • AUTOMATIC
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CHILDERSMAN
  • MEMBER
  • 1 POST
when my 2007 yukon drops out cylinders everytime it does it has a vibration, from 4 to 8 and 8 to 4. Is this somthing that more people has complained about.
Feb 20, 2008 at 10:52 PM
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2CARPRO JACK
  • ✓Experienced Mechanic
  • 11,533 POSTS
There are several TSB's (tech service bulletins) about injector problems and wiring problems with the injectors.Take it to the dealer , should still be under warranty. I havent heard any complaints about that, but it is stil a pretty new truck
Feb 20, 2008 at 11:56 PM
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BRIAN 1
  • ✓Experienced Mechanic
  • 1,030 POSTS
there is a bulletin for this condition,you have to reprogramm the ecm and the tcm with the lastest calibrations.
Feb 21, 2008 at 11:30 AM
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