Question about 2002 GMC Sierra 1500

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I have a 2002 GMC Sierra 1500 8 cylinder 5.3l truck. I have had issues with it starting, the fuel pump would not function. I had been able to remove the relay and replace and it would start from time to time. Recently it would not start, no matter what I did. I replaced the fuel pump and the fuel pump will not kick on, therefore truck is still not running. Any ideas what I can check next?

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Check connections at/or replace oil pressure switch. Your oil pressure switch is also a safety feature that shuts off power to fuel pump in case of accident or rollover.

Posted on Mar 12, 2011

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