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Chevy S10 - GMC S15 and Sonoma Fuel Pump and Fuel System

95 messages,  Last post on Jan 22, 2013 at 3:46 PM

You are in the Chevrolet S-10 & GMC S15 Sonoma Forum.

What is this discussion about? Chevrolet S-10, GMC Sonoma, Truck

Messages Page 10 of 10

#86 of 95 Re: Lack of Power to Fuel Pump - Not Fuse [zrokewl299] by platinumr1

Oct 28, 2011 (10:07 am)

Replying to: zrokewl299 (Oct 24, 2011 11:06 am)
Did you drop the tank or take the bed off to put in the new pump? It is easy to overlook the issue of having a bad ground but if you removed the bed, you will have had to disconnect the black ground wire from the rear of the bed. Make sure that is reattached and you may get your fuel pump to activate/turn on.

#87 of 95 Re: Lack of Power to Fuel Pump - Not Fuse [platinumr1] by rmdhcoleman

Oct 28, 2011 (6:18 pm)

Replying to: platinumr1 (Oct 28, 2011 10:07 am)
I took the 8 bolts out that hold the bed on and lifted the front part of the bed up like a dump truck and then you can access the top of the fuel tank to remove the pump. You do not have to disconnect the wires on the rear of the bed.

#88 of 95 95 gmc fuel issues by zack092091

Dec 17, 2011 (10:35 am)

Will not get power to the pump. Truck sat for years went to start it the gauge quit working and i found out the pump pickup tube and pump where no good. Replaced them all. Still will not get power to the pump. I ran a jump wire to the positive on the fuel pump harness. Still will not activate the fuel pump. I test the pump out of the truck with a hot and ground. It works just fine. I checked the wires to the fuse box still no power, but the ignition all the wires where hot but the one that ingauges the starter, which later gets hot when cranking over the truck. Any ideas? possibly email me at zack 092091 hotmail.com?

#89 of 95 Re: 95 gmc fuel issues [zack092091] by rmdhcoleman

Dec 19, 2011 (8:23 pm)

Replying to: zack092091 (Dec 17, 2011 10:35 am)
If you jumped a hot 12vdc wire to the fuel pump connector on the truck did you also ground the the pump?
The power to the fuse box goes through a fuel pump relay, which should energize for a few seconds when you key on. I assumed you checked the fuel pump fuse also? If the fuse is good could be the fuel pump relay or I have seen wires chewed in two by mice or chipmunks after setting for a while.

#90 of 95 Re: Lack of Power to Fuel Pump - Not Fuse [platinumr1] by wny716

Apr 17, 2012 (12:59 pm)

Replying to: platinumr1 (Oct 28, 2011 10:07 am)
i had my fuel pump replaced and found they did'nt reconnect the ground. It still worked fine,so that should'nt effect it.

#91 of 95 fuel tank for 2001 s10 crew cab? by wny716

Apr 17, 2012 (1:09 pm)

#92 of 95 fuel tank for 2001 s10 crew cab? by wny716

Apr 17, 2012 (1:09 pm)

Will a newer zr5 tank fit in an 01 s10 crew cab? They no longer stock them for this model. Reg cab/ext cab tanks are different.

#93 of 95 Re: Something's Wrong! [danndann09] by willo77

Aug 21, 2012 (11:03 pm)

Replying to: danndann09 (Jun 08, 2010 3:46 pm)
did ya ever find out what was wrong? i'm haviong the same problem right now

#94 of 95 99 Sonoma fuel pump quit again by willo77

Aug 21, 2012 (11:13 pm)

i have a 1999 sonoma 4x4 with 4.3 ltr vortec it was running fine and i shut it off for a minute and wouldn't start and had no fuel pressure and pump wasn't working ....so i bought a new one ...2 days later ..same issue ..shut it off and hr later won't start and no pressure ...my fuel pump is covered by warranty but i don't think it's a pump issue anymore ....anyone have any suggestions ...i have noticed this is a commom problem with these trucks so someone must have figured it out by now as i'm stumped ...fuses and relays are good wires aren't pinched and grounds good so whats left? and abviously no pressure but something causes it to shut off ...another relay?

#95 of 95 2000 Sonoma Issues by duesty

Jan 22, 2013 (3:46 pm)

To get started I have a 2000 GMC Sonoma, 4.3L V6. There are numerous issues with it.
 
1. It has a hard time starting, have to jump it often. It turns over just fine but it seems that when I get it hooked up to another vehicle it's like magic and all of a sudden it wants to start. To me it seems that the fuel is having a hard time getting to the engine. I was told most likely the fuel pressure regulator.
 
2. When it does get started it seems to chug along for the first couple of minutes, like it's not getting enough fuel. Would this be the fuel pressure regulator as well? I was told that when the fuel pump is junk that there is no in between with it, either it works or it doesn't. This is why I'm thinking fuel pressure regulator. Any thoughts?
 
3. Also I've been driving along and come to a hill and all of a sudden I lose all power. I then can only go 10 mph or it will chug and bog down. To me I would guess fuel issues yet again.
 
Anyone have any thoughts or suggestions or similar problems with this vehicle?
Thanks for any help!

Messages Page 10 of 10

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