Why the E3500M Complete Assembly Matters
GMT800 fuel systems rely on consistent fuel pressure (PSI) and accurate sensor feedback to the ECU. Replacing only the pump motor while leaving behind a failing sending unit or bad pressure sensor is how drivability issues and check engine lights come back fast.
The E3500M assembly includes:
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High-pressure electric fuel pump
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Fuel level sending unit
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Integrated fuel pressure sensor
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Pre-filter strainer (sock)
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Internal pressure regulation components
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OE-style housing and electrical connectors
One install. One fix. No return trips.
Compatible Applications (Gasoline Engines)
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Chevy Silverado (1999–2004)
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GMC Sierra (1999–2004)
Engine Compatibility:
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4.3L V6
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4.8L V8
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5.3L V8
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6.0L V8
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8.1L V8
⚠️ Gasoline applications only. Verify VIN and fuel system configuration before ordering.
Why the E3500M Complete Assembly Matters
GMT800 fuel systems rely on consistent fuel pressure (PSI) and accurate sensor feedback to the ECU. Replacing only the pump motor while leaving behind a failing sending unit or bad pressure sensor is how drivability issues and check engine lights come back fast.
The E3500M assembly includes:
-
High-pressure electric fuel pump
-
Fuel level sending unit
-
Integrated fuel pressure sensor
-
Pre-filter strainer (sock)
-
Internal pressure regulation components
-
OE-style housing and electrical connectors
One install. One fix. No return trips.
Product description
Performance, Reliability & Drivability Benefits
These trucks are built to work, and weak fuel delivery shows up immediately—especially when towing or hauling.
Replacing the fuel pump assembly:
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Restores factory fuel pressure
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Fixes fuel pressure–related fault codes
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Improves cold starts and throttle response
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Prevents hesitation and lean conditions
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Restores accurate fuel gauge readings
No horsepower gains here—just a truck that actually runs correctly again.
Why Choose A ABIGAIL?
A ABIGAIL Fuel Pumps are produced by OEM quality materials featuring superior metals and improved components. Our factory is equipped with modern production equipment and manufacturing technology, strict production process quality control which ensures the pumps quality. All the pumps are 100% tested before being shipped. We offer a complete line of electronic fuel pumps you need !
Safety & Installation Notes
Fuel pumps operate submerged in gasoline for cooling and lubrication. As pumps age, current draw increases, heat builds up, and wiring stress becomes a real issue—especially on high-mileage GMT800 trucks.
Best practices:
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Disconnect battery before service
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Relieve fuel system pressure
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Replace the fuel filter after install
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Avoid running the tank below ¼ full
This assembly is vehicle-specific and plug-and-play, using factory mounting points and connectors. No splicing. No universal nonsense.
Chevy Models
- Chevy Silverado 1500 1999 – 2004 V6 4.3L
- Chevy Silverado 1500 1999 – 2003 V8 4.8L
- Chevy Silverado 1500 1999 – 2002 V8 5.3L
- Chevy Silverado 1500 2003 V8 5.3L GAS, Vin ( T ) & V8 6.0L
- Chevy Silverado 1500 HD 2001 – 2003 V8 6.0L
- Chevy Silverado 2500 1999 – 2000 V8 5.3L
- Chevy Silverado 2500 1999 – 2003 V8 6.0L
- Chevy Silverado 2500 HD 2001 – 2003 V8 6.0L & V8 8.1L
- Chevy Silverado 3500 2001- 2002 V8 6.0L & V8 8.1L
GMC Models
- GMC Sierra 1500 1999 – 2004 V6 4.3L
- GMC Sierra 1500 1999 – 2003 V8 4.8L & 1999 – 2002 V8 5.3L
- GMC Sierra 1500 2003 V8 5.3L GAS Vin（T）
- GMC Sierra 1500 2002 – 2003 V8 6.0L
- GMC Sierra 1500 HD 2001 – 2003 V8 6.0L
- GMC Sierra 2500 1999 – 2000 V8 5.3L & 1999 – 2003 V8 6.0L
- GMC Sierra 2500 HD 2001 – 2003 V8 6.0L & V8 8.1L
- GMC Sierra 2500 HD 2002 V8 6.0L & V8 8.1L
- GMC Sierra 3500 2001 – 2003 V8 6.0L &V8 8.1L
- GMC Sierra C3 2001 V8 6.0L
When you need replace your fuel pump?
- Vehicle makes high pitched sound when the engine is first engaged.
- Sudden trouble accelerating.
- Low fuel pressure.
Please be attention:
- Always clean the cover and the outside and inside tank, replace the old strainer and fuel pipe.
- Replace the old fuel with clean standard fuel which you can get from the gas station.
- Vehicle should be filed with full tank fuel before parking for a certain long time.
- Replace the filter on a regular basis.
Professional and High Quality Service.
Installing parts on you vehicle can be difficult and we understand., If you have any problems with the pumps or the installation process, please feel free to eamil us, we’ll respond to you in 24 hours to help you solve the problems.
Angela –
Perfect DIY Fit! Replaced my 2000 Chevy Silverado. No need to rewire the harness as all parts were the same. My fuel gauge now works and no more leaks when the pump is running. This was a great price and did it myself in my driveway. Highly recommend.
dette52 –
this fuel pump worked perfect on my 2000 chevy silverado ,,, would buy again from this person if needed ,,,thanks and keep up the good work …my old pump was doing 40lbs pressure just enough fuel to run the truck but when accelerated died down to a stall.. this new pump held 72lbs of pressure and runs like a scalded dog…thanks again
Kris –
So far so good! Works well, is quiet, and comes with everything you need including a little wiring diagram to splice in the new connector. Time will tell with durability, but it started up first try and seems to be accurate and seals tightly
James Dykes –
Perfect fit2000 gmc sierra 2500 SLE6.0L 4WD EXT CAB. WIRING IS SIMPLE AND NO OTHER MODIFICATIONS NEEDED, TRUCK IS RUNNING GREAT!
Hughes –
This fuel pump was a perfect for for the 2001 Chevrolet Silverado 1500 5.3. There was no need to swap the wiring connections because it was an exact fit. This unit came with a quality filter pre-installed on the fuel pickup. I found it to be a high quality replacement.
Tommy –
*UPDATE * Its been a few months now since i installed this pump and it has worked flawlessly, cant say enough good things about it so ill leave it at this, buy this pump, its worth the money and works just as well as the oem!Im writing this review and just so there’s no mistake the pump has been in for a week now so I will update down the road. I took a chance on this pump assy because of the price and the other 4 people that gave it 5 stars at the time. The pump was an exact match and fit well. The only problem I had which also delayed my instal was the new wiring harness that needs to be installed on the vehicle and here’s why. I never trust wiring things up by color alone, I’m an electro-mechanical maintenance tech and have made that mistake in the past so I always go by numbers or letters when present. Unfortunately the lettering on the harness isn’t clear, there’s an A on one side and a D on the oppisite side but it isn’t correct. The pamphlet that came with is correct but once again they do this with colors. If looking at the harness from the rear the correct lettering sequence from right to left is C, A, B, D. You’ll know what I’m talking about when you pull off the OEM plug and replace it. This thing is as quiet as a church mouse so have a second person there to turn the key while you listen for the pump to engage. I have to say so far so good. I am very pleased with my purchase.
Paul D350 –
Update 9/20/23:So it’s been about 3 years 8 months since I installed this pump and it’s still working great. :-)Update 1/24/20:This pump has been working flawlessly for almost five months now. As I said in my original review it’s easy to see this is a well-made part. So glad I didn’t pay tons more for an OEM pump!(Original review)This fuel pump looks as well made as any I’ve ever seen and I’ve seen quite a few. The only issue I had was adapting the wiring harness but after checking out the color coding of the wires online I was able to figure it out.Pro tip: if you have a pick up truck it may well be easier to raise the bed than drop the tank. There are YouTube videos that describe that there are four bolts down each frame rail on each side of the bed. First, disconnect the fuel filler neck from the gas door opening. Then completely remove the 4 bolts on the driver side and loosen the bolts on the right side of the bed most of (but not all) the way. Cut 2 or 3 2”x4”s approximately 16 inches in length. Have a friend help you lift up the driver’s side and support it by bracing one of the 2x4s between the underside of the bed and the frame rail. You’ll find you may need to trim the 2”x4”s somewhat to get them to wedge in securely but once you get it propped up with one you’ll have an easier time figuring out what length the others need to be.Before removing the fuel pump from the top of the fuel tank, be sure to first wash off any loose debris nearby! You don’t want to get any dirt whatsoever into the fuel tank.Then follow the pump replacement instructions that came with it.
Angel Luna –
Arrived on time, packaging protected the product, and easy to install with all required items.
Amazon Customer –
Perfect fit quick delivery globally
Perfect fit my truck gmc sierra 1500 model 2000 working 💪
Apple Crisp –
Seems good!
Been 6 months and it’s still working! Seems decent!