Try this. http://www.gm-trucks.com/forums/inde...&hl=sevice+4wd I personally like this site because of its information and because I own a 2004 4WD Suburban.
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SS 396 turbo 400 #'s matching CA. emissions original restored.
Last edited by 70goldss; 12-31-2009 at 10:43 AM.
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