When you say it won't prime do you mean you turn the key and the pump is not running at all? Or it's running but not picking up fuel? Isn't there an inertia switch somewhere that is supposed to shut off the pump in an accident? You may be having issues with that. I'm not sure it's a pump problem vs power getting to the pump consistantly. It sounds like an electrical issue.
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69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
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