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How to change spark plugs

Tiny
DSALEM
  • MEMBER
  • 2003 CHEVROLET TRAILBLAZER
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 114,000 MILES
My 2003 trailblazer ls starting hopping all of a sudden and the service engine soon light began flashing. Looking at my engine, I cant find the spark plugs or the distributer cap. Help please
Wednesday, January 5th, 2011 AT 5:49 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
There is no distributor cap. The plugs are in the head just as always. Before replacing the plugs, have the computer scanned to identify why the check engine light came on. It may have nothing to do with the plugs but rather a sensor. Most parts stores will scan the computer for free.
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Tuesday, January 11th, 2011 AT 1:34 PM

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