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Chevy Silverado and GMC Sierra Fuel Pump/Fuel System

333 messages,  Last post on Dec 03, 2009 at 12:13 PM

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What is this discussion about? Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Truck

#303 of 333 Re: '00 z71 hard starting likes its flooded. [bsgb22a] by bruce48532 Oct 04, 2009 (7:48 pm)
Replying to: bsgb22a (Apr 21, 2009 5:46 pm) not sure if you got this resolved.   my experience is the clogged fuel filter causes the rapid movement in the fuel gage. what i mean by this is the needle as quickly as possible will move left to right.   reason: the fuel filter was clogged, it is not he filter its self that causes the erratic movement by its self. the voltage/amp draw from the fuel pump that is effected as a result of resistance to fuel flow beacuse of the filter being clogged.   increased resistance of fuel flow caused increased amp draw by the fuel pump causing the gage to move erratically.
#304 of 333 Re: 01 silverado gas tank [ebonysilverado] by stef8 Oct 06, 2009 (1:18 pm)
Replying to: ebonysilverado (Oct 04, 2009 3:20 pm) Sorry, my mistake. There are 4 bolts, 1 right at the begining of the box, 1 about 24" further away, bolts 3 an 4 are behind the rear wheel.   Look carefully at the jonction of the box and the top of the frame.   Regarding the fuel gauge, unfortunatly it comes with the fuel pump as an assembly.   The only way to replace only the fuel sender unit would be to get one in a scrap yard.   The reason why your fuel gauge is acting erratically comes from the wear of the potentiometer in the fuel sending unit. The sliding contact (wiper) blades are getting inconstant reading from the semi-circular resistive element.   In simple words: you need a new one!   Stef
#305 of 333 solverado fuel pump replacement by ebonysilverado Oct 07, 2009 (7:27 pm)
i figured it out the hard way but i did it   i will post pics soon...   that three bolts oversight really killed me but if found the other cause the box wouldn't budge   i will post pics   just need to know if there is a special procedure for rehooking it .. heard someone mention air in the fuel line.. is that a concern? Replies to this message: stef8 (Oct 08, 2009 11:20 am)
#306 of 333 Re: solverado fuel pump replacement [ebonysilverado] by stef8 Oct 08, 2009 (11:20 am)
Replying to: ebonysilverado (Oct 07, 2009 7:27 pm) No special procedures.   Put the key to ON position, wait for the pump to stop, do this 2 or 3 times, then start your engine.   Stef
#307 of 333 Fuel problem by hdking57 Oct 09, 2009 (11:24 am)
Truck will start 100 times and idle fine for about 30 seconds and then die out Replies to this message: bruce48532 (Oct 09, 2009 11:50 am) hdking57 (Oct 09, 2009 5:58 pm)
#308 of 333 Re: Fuel problem [hdking57] by bruce48532 Oct 09, 2009 (11:50 am)
Replying to: hdking57 (Oct 09, 2009 11:24 am) did you check the fuel pressure regulator? Replies to this message: hdking57 (Oct 09, 2009 5:58 pm)
#309 of 333 Re: Fuel problem [bruce48532] by hdking57 Oct 09, 2009 (5:58 pm)
Replying to: bruce48532 (Oct 09, 2009 11:50 am) no I haven't tried anything really yet...
#310 of 333 Re: Hard Starting 5.3L [sierraz71] by joelmich Nov 02, 2009 (5:57 pm)
Replying to: sierraz71 (May 21, 2008 10:13 pm) I also have a 2001 GMC Sierra and have the same problem. Did you ever find out what the problem was and what was the fix? Please email me at n4urwearthlink.net.   Joel
#311 of 333 how do i check power to fuel pump? by jrob4 Nov 13, 2009 (1:05 pm)
I have a 2000 2500 i think has a bad fuel pump but would like to make sure. Does anyone know how i can check pump? Replies to this message: bruce48532 (Nov 13, 2009 5:53 pm)
#312 of 333 Re: how do i check power to fuel pump? [jrob4] by bruce48532 Nov 13, 2009 (5:53 pm)
Replying to: jrob4 (Nov 13, 2009 1:05 pm) 1. disconnect the fuel line turn the key on watch the fuel pump out. 2. turn the key on listen for a wining noise from the fuel pump area.   is your fuel gauge moving erratically? when is the last time you changed your fuel filter? any pulsing/surging while driving?   the fuel pressure regulator will make hard starting

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