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Re: Spark Plugs
Most later GM use AC-Delco platinum/iridum spark plugs.
Check you manf specs and the lastest ac-delco spark plug book.
Yes they are expensive but remember they will last a 100k.
A little to long to run them but.
Just changed plugs in a 01 4.3 V6 s-10 with 152K origional plugs and still going strong outside of fuel pump.
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Remember proper testing gives us the answer to many problems.
MT
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