fuel pump replacement?

Hello, get a fuel pressure gauge and check fuel pressure for a start. Fuel pressure spec shows 58-64.

Here is how you change the pump and its location in the diagrams below. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

2002 Chevy Silverado V8 Automatic 112,00 miles

I have installed a new fuel pump, still won't start, checked fuses, have fuel, where is the oil pressure switch?

When you 1st turn key to run -Do you hear the fuel pump come On? If so check fuel pressure and then comeback with your readings this is where we start.

No. Do not hear pump.

Inspect and test the fuel pump fuse and the fuel pump relay then comeback

Aready checked fuses and relays. Is there anything under the truck I can check.

Hi, I have a 2002 Silverado. . . I've replaced my fuel pump, fuel filter, spark plugs, wires, and distributor.
Now I'm having multiple misfires and sputtering, but only when the weather and engine are cold. I am having engine hesitations from about 1700 to 2100 rpms. It runs fine at higher rpms.
It idles fine but if the engine is cold and I turn the wheel left or right when the vehicle is in drive at a stop it'll die.
I have seafoamed it trying to clean the injectors but that didn't work either.
Thank you for your time and ideas!

If you don't hear the fuel pump and the fuse and relay is okay-its coming from the computer fuel pump relay control

Sounds like you have an ignition problem. Plugs, wires, coils, crank trigger sensor, and all wiring harness connections need to be checked. I just had to replace all of my coils, they failed after the engine ran too lot for too long.

Sounds alot like the issue I was having with mine. Replaced many things and still had the issue. Finally found that the MAF sensor was bad.

I just recently put in two new fuel pumps into my truck. Then yesterday when I went to turn on my truck I started it and shut my door then it died. I can't seem to find what the problem is then today it will stay on. The first pump I put in was a ac delco one I bought off of eBay and that lasted me about a few months. This next one I just put in was a airtex and didn't last me but 3 weeks. I keep thinking I have and electrical problem or many it's the injectors. I'm thinking about puting some injector cleaner in my tank and seeing if that helps. Also, my batter is about 3 to 4 years old. Also, the fuel pump had a louder noise to it then it does now when turning the key to on position. Please help!

HAve you checked to see if the fuel pump pressure is within the manufacturer's specs? Also, if the battery is starting the truck without issue, it should be fine.

How would I go about checking that? I assumed all these pumps were pretty much universal

Here is a video for testing. It is being done on a Tahoe, so it should be very similar to your vehicle.

https://www.2carpros.com/articles/testing-a-fuel-pump-and-pressure-regulator-video

Tell me, did you get the fuel pump designed for your vehicle and install it in the fuel tank?

I replaced the fuel pump on a 2002 chevy 1500 4.3 p/u, ran great parked it the next morning would not start. Put new fuel filter cleaned trottle body, next morning started up. drove that day off & on drove 20 miles to put tires on it then it wouldn't start at the tire shop. Towed it home. No fuel pressure at all, power is getting to the wires going into the blk sensor on top of the pumper, but no power from the other wires going to the other connector on top of the pump. Is there a fuse to ck to these wires going to the pump. Or is there something else I need to do? Please help, thank you Vicki

So you have power going to the fuel pressure sensor on top of the fuel pump module?But no power the fuel pump connector itself?

There are two electric plug on top of the 2002 chevy fuel pump. One is a black sensor that pops off and the other is cream color. the wires going to the blk one, I put a test light and there is power to the gray wire. But the other wire plug in is blue and none of the four wires have power coming from them. And I tested them with the truck key turned ON. I pulled the fuel line from the pump to the fuel filter turned on the key no fuel. No pressure coming out the port by the trottle body. But my questions is; doesn't there have to be power coming into both those plug wires to the pump. Is there a fuse, besides the fuel pump relay? The relay is working with the test light.

The one you have power to is the fuel pressure sensor which is normal.Your only going to have power to the other connector which goes the fuel pump and fuel sending unit for the first couple of seconds with the key in the run position.Unless the engine is running.You will have to have someone crank the engine while checking for power at that connector.What model silverado do you have 1500 etc?Also what size engine do you have?

It is a 1500 4.3L short bed automatic TWD

For the 4.3 i need the 8th digit of the vin they have two different 4.3 for that truck.

I have a 2002 Chevy Silverado. The fuel pump went out, and I replaced it with an Airtex brand new pump. Once the new pump was installed, I turned the key on to listen for the telltale "whirring" noise and as per specs from the PCM module, it shuts off after about 2 seconds; thus priming the system. No start, turned the key to on and off 3 times just to make sure it was priming all the way up to the regulator. Nothing. began troubleshooting even further and realized that once I disconnected the exit side of the fuel filter, there was no fuel coming out when the pump is energized.(fuel filter was replaced last service approx 3500 miles ago) To eliminate the possibility of a clogged fuel line, I disconnected the main feed line off of the top of the fuel pump, and a helper turn the key on, it makes its "whirring" noise but nothing. No fuel whatsoever. I believed that I had received a faulty fuel pump. Called my supplier from where I purchased it and told them the situation, they immediately sent me out another new pump. Installed this 2nd new pump the exact same way. Key in the on position, makes the whirring noise, and once again absolutely no fuel coming from the feed line of the new pump. According to the Chilton manual, if the pump makes the noise, its working and pumping fuel. Mine however does not. What could be the problem? Is it a horrible coincidence to receive 2 faulty brand new fuel pumps? Any answers to my problem would be greatly appreciated!

Is pump model E3500M or E3501M? place finger over fuel line while helper turns key feel pressure or suction?

Alright its the same for both engines black is ground and the gray wire is power while cranking the engine.

e3500 (two connector) neither suction or pressure.

Actually removed the feed line from the top of the pump, all electrical connected with finger over outlet anticipating to be splashed with fuel, had helper turn key to on position. Pump energizes (whirring noise) for about 2-3 seconds. No pressure no suction, no fuel.

Try this hot wire pump maybe not running long enough to prime

Thank you......I will have him check that too. Since I posted, they came out again this morning and was able to get the truck started by taking off the butt ends. They said it was like they weren't getting the correct contact. Once he took the ends off and taped them all up, the truck fired right up. Although I was nervous about getting stuck somewhere, the truck ran great and I drove it into town. I made a couple stops and then at my last stop, the truck wouldn't start again. The person came and undid the orange wire and then wired it up again, the truck fired up again and I was able to drive home. He said the orange wire seems to be the one that keeps faulting? I am at a loss here?? What does the orange wire do? The fuel pump that was put in is an aftermarket pump. Just a note. He checked all the fuses and relays, all are working.

no luck, ran a bypass and put 12v directly to gray wire (hot lead to pump) let it run and listened to the pump make its noise for approx 10-15 seconds and still received no fuel from the top of the pump.

yours may be a truck that has a poor harness going to the fuel pupmp. usually with these pumps a 12" harness with a different connector comes with it and it HAS to wired to the old harness, replacing the last foot or so. It SHOULD be properly wired in by soldering the connections and then using shrink tubing to cover the bare wires and protect it from moisture. this may ebe your problem especially since you are saying that they have to "fix the wires" so the truck will run correctly.

Well pump is in-op did original pump have same symptoms?