I've got a 96 GMC 1500350 4=4 if it would set for a week with startn it would loose prime now it takes hr to loose it and won't start


Asked by May 25, 2015 at 07:05 PM about the 1996 GMC Sierra C/K 1500

Question type: Maintenance & Repair

It will start with either but then u have
to push gas slow or it will die or under
load replaced pump regulator filter not
sure what the hell is going on getn
pissed at it

6 Answers


Sounds like a fuel pump problem, possibly the little internal check valve has gone bad. Run a fuel pressure test and flow. It most likely will fail the pressure hold part of the testing.


Need to test fuel pressure at the fuel rail


I changed it twice how much voltage should I b getn bk there


I checked it its around 56 lbs will stay running after I spray either to start


You should be getting battery voltage at the fuel pump when you first turn on the key then it will drop to 0 if the engine is not running. How much fuel pressure did it hold after the key was turned off? Go to: http://www.gm-trucks.com/forums/topic/150638-fuel-pressure- testing-on-1996-silverado-z71-4x4-57l-vortec/


I gust went out put the battery charger on the truck it started and ran fine e just don't get it

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