Question about 1999 Chevrolet Silverado 1500

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Need plug gap for 2003 4.3 chevy truck

What is the spark plug gap on a 2003 chevy half ton

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  • Anonymous Apr 27, 2009

    I need spark plug gap for 2003 chevy 5.3L silverado

  • Big Poppa Marv
    Big Poppa Marv May 11, 2010

    what is the size of your engine?

  • Anonymous Mar 15, 2014

    Spark plug gap on 2005 chevy malibu LS 2.2l

  • Anonymous Mar 18, 2014

    Need gap size

  • Anonymous Mar 23, 2014

    spark plug gap

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  • 341 Answers

The plug gap is -- .060

Posted on Dec 06, 2008

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1 Answer

Spark plug gap


Hello Josh,
You will find the answer here:
1993 Ford F350 Spark Plug

BTW it's gap is .044"

Good Luck
Rich Lilja

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half of the plugs will be on the left, and half on the right of the engine. You will find a cable going in between the exhaust heads, those cables go to the plugs.

Use a plug puller to reomve the caps with out damaging them,

then remove the spark plugs with a socket designed for spark plugs, then verify the proper gap on the new spark plugs

install the new plugs,

place the caps back in the same spot they came from

the caps should make a clicking noise if they seat right.

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Frank, look under your hood for a "catalyst" sticker. It should have your spark plug gap listed on that sticker along with the size of your motor, etc. Some of the newer vehicles aren't listing it there anymore, but it should also be listed in your owners manual in your glove box - if you still have it. Check the alphabetic index in the back for spark plug gap and if it's not there, check specifications.

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