Quote:
Originally Posted by cf1
i have an 2006 silverado 4.3 need to replace the plugs. anyone recomend .thanks
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AC delco PLUGS
Bosh and c4 and other brand are junk and do not work right in GM engines.
Always check the latest AC delco spark plug book for right plug and gap.
A lot of times the no and gap is changed from OEM plugs and gap.
How many mile on your plugs?