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tj310 · 02-12-2013, 10:04 AM

I am working on a 1999 3500 GMC and those numbers look about the same. I would hook up a gauge and test under load. ---Trevor

02-12-2013, 10:04 AM	#2
tj310 Member Join Date: Sep 2009 Location: Dresden On. Canada Posts: 460 Likes: 0 Liked 0 Times in 0 Posts	Re: fuel pressure gm 454 1998 motorhome I am working on a 1999 3500 GMC and those numbers look about the same. I would hook up a gauge and test under load. ---Trevor