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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

#1 of 333 1988 gmc sierra 1500 fuel pump electronics by chuckh2 Apr 08, 2006 (4:32 pm)
hello everyone, I have an 88 gmc 1500 2wd with a 305 v8 and an auto trans. I think the electronic fuel pump circuit is possesed by the devil. My truck has been running fine until recently. Now it runs when it wants to. The fuel pump is less than a year old (napa brand), and the relay was the first thing I changed when all this started and the fuse is okay. Sometimes I have power going to the fuel pump, and sometimes not. Does anyone here know if there is some sort of collision safety cut-off switch, like on a ford? Is the computer somehow involved? If you can get it to start, it runs perfectly. Any help is greatly appreciated. Replies to this message: jneal (Apr 09, 2006 8:39 pm) stevewhit (Jan 26, 2007 2:33 pm) seafarmer (Nov 01, 2008 4:42 am)
#2 of 333 Re: 1988 gmc sierra 1500 fuel pump electronics [chuckh2] by jneal Apr 09, 2006 (8:39 pm)
Replying to: chuckh2 (Apr 08, 2006 4:32 pm) I would tend to suspect a faulty connection in the fuel pump circuit.
#3 of 333 1988 gmc sierra classic 2500 454 engine by fixrupr Apr 12, 2006 (5:44 pm)
The sierra will die at stoplights, and it will die going around a corner sometimes, and may go a week without doing it. What is the problem?? Guess ??
#4 of 333 98 Silverado 1500 won't start by mtlehnert Jun 04, 2006 (8:45 am)
Truck turns over but then dies. Has been running fine until now. Checked the fuel pump / replaced the fuel filter / distributor cap and rotor still won't start. Any ideas? Replies to this message: rortiz1242 (Oct 01, 2006 5:21 am)
#5 of 333 1990 chevy 350 miss at acceleration by ogsilverado Jul 24, 2006 (2:55 pm)
my truck has run great up until now,ive changed all the important ignition parts,and the fuel injectors,it dogs when you barely crack the throttle and then catches and kind of takes off.i have no check engine lights on ,checked the smog lines.where to turn next?it feels like it running on 7 cylinders,but it feels like it could be starving for fuel,but it doesnt completely die,its driving me crazy!.can someone help!! Replies to this message: bcrawford (Aug 16, 2006 4:13 pm)
#6 of 333 I Love My Silverado 1500 2000 z71 the Big Engine, 4 Fuel pumps in 1 year by dptaylor Jul 25, 2006 (4:38 am)
Hi, this is my first time on a site like this, I'm a woman in Jamaica with a fabulous truck that myself and anybody else that rides in it or just sees it loves immediately. I do have a Large Problem with going through Fuel Pumps, as this is my 4th one for the year. One mechanic suggested using an external correct psi fuel pump like in the days of the Carberators. ??? What do you think. This is what has happened 4 times now. Please remember Jamaica does NOT have wonderful fuel. So maybe an additive could help, any suggestions would be appreciated. TRUCK WILL BEGIN TO HESITATE WHEN TAKING OFF, THEN THE CHECK ENGINE SOON LIGHT COMES ON, THEN ON THE SIDE OF THE MOUNTAIN OR ON A VERY SKINNY ROAD I FEEL MY TRUCK LOOSE POWER AND THE ENGINE STOPS AND ALL THE DASH LIGHTS COME ON, (THIS ALL HAPPENS IN A MATTER OF 10 MILES OF DRIVING) THEN I BEGIN TO PRAY AND TRY TO FIND A PLACE TO PULL OVER SO THE WILD DRIVERS DO NOT RUN INTO ME. MY PRAYERS HAVE BEEN ANSWERED AND I ROLL TO A SAFE PLACE. THEN THE EMBARASSMENT OF MY LOVELY TRUCK BEING TOWED TO THE LOCAL RACING SHOP. (I FIGURE THOSE GUYS ARE THE MOST UP TO DATE ON HOW TO FIX THINGS.) WHEN THEY GET THE FUEL PUMP OUT AND TAKE IT APART THE BRUSHES ARE ALWAYS DOWN TO NOTHING. WHEN FIXING WE 1) REMOVE TANK AND CLEAN 2) REPLACE THE PUMP 3) REPLACE FUEL REGULATOR, UP ON THE ENGINE 4) REPLACE ALL THE FILTERS. THIS MECHANIC FEELS I BURN THE PUMPS BECAUSE I RUN MY TRUCK ABOUT 18-20 HOURS A DAY WITH THE A/C ON FULL BLAST. I AM SOMETIMES AT A STAND STILL FOR OVER 30 MINS. ANY IDEAS OUT THERE? MANY THANKS DPTAYLOR Replies to this message: grandpajon (Jul 07, 2009 4:57 pm)
#7 of 333 2001 Silverado 4.8 V8 Chaging Fuel Filter by truitt83 Jun 27, 2006 (2:30 pm)
#8 of 333 2001 Silverado 4.8 V8 Chaging Fuel Filter by truitt83 Jun 27, 2006 (2:30 pm)
I was planning on changing my fuel filter in my 01 silverado and I was wondering if there is anything special you have to do to change it. I have tried to loosen the bolts on either side of my filter but nothing. Is there a release or something that I am missisng. If anyone can help let me know. Replies to this message: ahoron (Jan 24, 2007 9:25 pm)
#9 of 333 Re: 1990 chevy 350 miss at acceleration [ogsilverado] by bcrawford Aug 16, 2006 (4:13 pm)
Replying to: ogsilverado (Jul 24, 2006 2:55 pm) i had a 92 that started with the same conditions... not long after it would idle fine but choke and die with any kind of acceleration. I fin ally took it in to the shop. after three days and lots of new parts(at their expense) it was a worn distributor bearing. i replaced the distributer assembly with a rebuilt, the truck never ran so good! 400000 km and still going strong!
#10 of 333 '00 z71 hard starting likes its flooded. by ibnot4u Aug 21, 2006 (12:33 pm)
I have a 2000 chev silverado z71 with the 4.8 in it. about 6 mo ago, it starting becoming hard to start, like its out of fuel. After you crank it for about5-7 sec, it start and sputters then picks up. It then smells like it was flooded. (gave it no gas when turning the key) Starts perfect 1st thing in the morning but after the initial start, it acts up. My fuel mileage has gone down to 12 mpg. TERRIBLE! It even sounds like it misses every now & then while driving down the hiway. Fuel filter has been changed but no diff. I was told it could be the fuel pump having not enough pressure, the throttle sensor, or the fuel pressure regulator. HELP!! PLEASE!! Replies to this message: cole1976 (Oct 11, 2006 6:46 am) ibnot4u (Oct 11, 2006 1:26 pm) joseywells (Jul 12, 2007 6:51 pm) seewoody (Oct 29, 2006 8:12 pm) mastercraft (Oct 30, 2006 3:53 pm) tbullington (Nov 26, 2006 5:25 pm) seannoo (Nov 27, 2006 7:05 am) tbullington (Nov 28, 2006 6:03 am) and 9 more...

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