Question about 2007 GMC Envoy Denali

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Need to change spark plugs, where are they located?

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Okay, you need to go to parts store and buy the repair manual for your make and model Denali it will tell you where your plugs are, how tight the plugs need to be after replacing and how to set the timing if necessary. P.S. Remove the plugs one at a time.




Posted on Aug 02, 2010

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SOURCE: spark plug locations

If the car is missfireing, don't try to patch it one plug at a time. go ahead and replace them all at once. It will save you 5 more cylenders to hunt later.

Posted on May 21, 2009

hightower680
  • 76 Answers

SOURCE: need location of spark plugs an need to know how to change them

There should be a cover over the engine, take the cover off and you will see them on top of the engine. CAUSE!!!! Take one sparkplug out at a time, so you don't mixed up the leads.



Posted on Jul 20, 2009

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8. Check the spark plug to make sure it needs replacing. A good spark plug should be lightly coated with greyish brown deposits. If heavy deposits are present, if the spark plug is black or if the electrode or core nose are damaged, the plug needs to be replaced.

Video - www.carbasics.co.uk - look in the 'how to' section.

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