Question about 1996 GMC Sonoma

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Will not start

I have a 96 gmc sonoma 4.3 it acts like its not getting fuel. the pump kicks on and i just replaced the filter. the pump was replaced about 2 years ago. if i spray starting fluid in the carburater it will start long enough to burn it out then shuts down. any ideas what it might be?

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  • charlie6toes Jan 10, 2009

    where do we find fuel pump relay?

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I had the same problem with my blazer easy fix sounds like the cpi if its a vortec its got one large fuel injecter with six fuel lines on it in side the upper intake it could be that which is easy but expensive (about 300 bucks) it also has a fuel regulator attached to it it could be clogged or a bad seal its only about 15 bucks (fixed two 4.3s with that proplem)

Posted on Feb 18, 2009

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Have you checked the fuel pump relay? usually that is the problem seeing is that it fires when you use the starting fluid.

Posted on Aug 30, 2008

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Hello ,
The area you need to check ( check owners manual) is most likely this is two issues that could be. It could be your fuel pump relay , that is what triggers your fuel pump to work.Or your fuel pump itself. However first thing I would check is your fuel pump relay, which is normally square like fuse, check fuse box area, or sometimes it is under hood near firewall in a box, with other fuse relays. Thanks Mike

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