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gchemist · 08-02-2011, 12:21 AM

Remove and clean the EGR and air idle valves. The O2 sensor could be failing. Have you tried to pully any codes?

08-02-2011, 12:21 AM	#7
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: 4.3L hesitating when "cold" Remove and clean the EGR and air idle valves. The O2 sensor could be failing. Have you tried to pully any codes? __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos