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Chevy Silverado and GMC Sierra Fuel Pump/Fuel System

416 messages,  Last post on May 12, 2013 at 6:13 PM

You are in the Chevrolet Silverado & GMC Sierra Forum.

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

Messages Page 37 of 42

#359 of 416 Re: driveability [wildcard00] by Duane99

May 31, 2010 (10:05 am)

Replying to: wildcard00 (Nov 13, 2009 9:36 pm)
I have a 99 silverado 5.3 that has the same issue. Always starts fine, but if hasn't sat for a couple of days, will not accelerate for about 2-3 minutes and then fine after that. Lately, the gas gauge has registered empty when tank is full, switch off/on and it registers correctly. What did you find out to be your problem. Thank you.

#360 of 416 Re: driveability [Duane99] by bruce48532

May 31, 2010 (10:52 am)

Replying to: Duane99 (May 31, 2010 10:05 am)
Fuel filter change it now or pay later for a new file pump. plugged fllter causing over draw of amps causing fuel Gage to flipflop.

#361 of 416 1996 GMC Sierra fuel pump not turning on by aar89

Jun 26, 2010 (4:22 pm)

When I went to leave work the other day my truck wouldn't start. I listened for the fuel pump to kick on and it didn't. I had previously had issues with the fuel pump relay, so I replaced this relay as a "hail mary" to save money hoping this wouold fix the problem, it did not. Since then I have replaced the fuel pump, traced the wires checking for breaks, and tried replacing those wires. So far nothing has worked. We can force power to the pump and get it to turn on but when you the turn the key on it doesn;t work.
 
If anyone has any ideas I would appreciate it.
 
Thanks in advance!">

#362 of 416 fuel pump by intheback

Jul 12, 2010 (11:55 am)

I have just replaced my fuel pump on my 96 gmc 1500 it worked great for a few months but now when I start it and its running the fuel pump will not shut off .

#363 of 416 Fuel pump 98 silverado by novaboss

Aug 03, 2010 (11:36 am)

Hello everybody I have a 98 chevy silverado with the 5.0 vortech engine. The problem i am having is that sometimes the truck will start but then immediatly stall. After about 10 minutes or so and after turning the key it will start and run as if nothing happened. Then it will be good for a while then out of nowhere the darn thing acts up again. I have noticed that when i cycle the key when I turn it on the fuel pump does not run then when I cycle it off the fuel pump comes back on. But when it runs it cycles normally. It is really starting to irritate me. Also my fuel gauge will bounce back and forth between empty and full all the time. PLEASE HELP!!! Any input would be greatly appreciated!

#364 of 416 Re: Fuel pump 98 silverado [novaboss] by akjbmw

Aug 27, 2010 (10:46 pm)

Replying to: novaboss (Aug 03, 2010 11:36 am)
Had a '98 silverado with a 5.7 vortec. I think the fuel pump just quit without any teasing.
The dealer fix is the complete fuel pump and sending unit as a single unit. Note that the new fuel level sending unit shows empty much sooner than the old unit. The fuel is still there, it just lies to you.
Naturally, the tank was over three quarters full. They charge to transfer the fuel to a storage container and lower the tank to gain access to the opening for the unit.
An independent shop is likely to replace just the fuel pump for less total labor.
Hopefully the gauge issue is an electrical ground deal. Could also be what the fuel pump issue is too.
I don't remember what the exact cost was, but it was significant.
I would do independent shop.
As it is, I had a transfer-flo tank installed in my newer truck and that becomes a non-dealer issue to start with. Actually, I don't think the whole transfer-flo upgrade was much more costly than the fuel pump deal on the '98. 45 gallons instead of only 26 helps get past the high prices in the boonies. Something to consider since you are facing the repair.

#365 of 416 Turned over ,now nothing by onlygmc

Sep 23, 2010 (2:01 pm)

Ok, first thanks for this site!! I have read all through this forum but cant find my issue completely, i have a 03 2500 gas GMC of course.(236638 km) i turned a corner and it sputtered out and died, rolled into the lot shut it off then turned it over again but it would putt putt putt and die ( still electrical working) towed it home, then had same issues, now it just cranks but doesnt turn, I havent checked my fuel filter, but i have checked the pressure bleed fitting on passenger side of engine (look like a lil tire valve) there is a lil gas coming out. I read around and it said to remove the plastic hose from my fuel pressure regulator and gas came out for 5 secs and now nothing comes out. i cant get the lock clips off the vaccuum hose that attaches to it though. there is also no error numbers or check engine light, i am at a complete loss of ideas now.. Anyone with a similar problem thanks

#366 of 416 Fixed Mine by tommy666

Oct 06, 2010 (12:28 pm)

I was not getting fuel. Pump was not running. I lifted the bed and pulled the pump. The pump wire had disconnected. The clip was soft. I think that over time the gas breaks down the plastic. I put a zip tie around the clip to assure it wont come off again.

#367 of 416 99 GMC Sierra 2500 6.0 L by ctreynolds6

Feb 18, 2011 (11:52 am)

My truck was running just fine no warning lights or messages pulling into the drive way and it stalled out. If I wait about 10 minutes it will start again and about 30 seconds later it will die out again. I let it sit over night and it ran for about two minutes and died again. I am somewhat mechanicly inclined but this just doesent make sense to me. Does anyone have an idea?

#368 of 416 Re: 99 GMC Sierra 2500 6.0 L [ctreynolds6] by obyone

Feb 18, 2011 (12:32 pm)

Replying to: ctreynolds6 (Feb 18, 2011 11:52 am)
There are a bunch of sensors that monitor and adjust fuel, air, etc. I would start by checking both the throttle position sensor and the idle air controller. A failure of either one could cause the condition you describe.
 
Both are inexpensive and relatively easy to replace.

Messages Page 37 of 42

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