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Old 06-05-2010, 03:06 PM
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GMCTRUCKS GMCTRUCKS is offline
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EGR valve.

I was having problems with my trucks EGR and went to get my emissions test and it didn't pass because of high NOX so I changed out my EGR with a used one and she passed with flying colors but the EGR was from a different year truck and my buddy told me it might have a hesitation because the EGR might have a different orifice size than yours and sure enough it did because it was doing the same thing yours was.

So I replaced it with a new one and she runs super now. I hope this thread helps a lot of people. And yes there is different ones for the weights of trucks.
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