Question about GMC Suburban
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Posted on Jan 02, 2017
SOURCE: gmc sub wont start 1996
Your fuel pump may be at the end of it's life and need to be replaced. Your going to have to check your fuel pressure at the shredder valve, to have the engine start you need 60 to 65psi. Any other readings will not start and under 55psi, engine will not run. It's common to hear the electric fuel pump working but the mechanical pump it self is worn out and can no longer provide the proper fuel pressure for your SEFI system. Good luck and keep me posted, be glad to help get you truck running again. Auto Zone has loner tool program and they will have the step by step instructions to get the job done.
Posted on Jul 01, 2009
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