GM Genuine Parts MU1417 Fuel Pump Module Assembly: The Complete Guide to Replacement, Compatibility, and Performance

If you own a 2004-2007 Chevrolet Silverado or GMC Sierra and are experiencing hard starting, stalling, or loss of power, the GM Genuine Parts MU1417 fuel pump module assembly (also sold under part number 19352886) is the direct OEM replacement you need. This in-tank fuel pump assembly includes the fuel level sending unit, a seal, and two electrical connectors, and it is designed to restore your truck's fuel delivery system to factory specifications . The MU1417 is a critical component for vehicles like the Chevrolet Silverado 1500, 2500, 3500 and GMC Sierra 1500, 2500, 3500 from the 2004 to 2007 model years . Below, we break down everything you need to know about this part, including compatibility, installation tips, symptoms of failure, and where to buy.

What Is the GM Genuine Parts MU1417 Fuel Pump Module Assembly?

The GM Genuine Parts MU1417 is an in-tank electric fuel pump assembly that combines the fuel pump, fuel level sensor, and a seal into one unit . It is manufactured by General Motors and carries the OEM part number 19352886. This part replaces several earlier part numbers, including 19167473, 19303386, and 19331983 .

Key features of the MU1417 include:

  1. Electrical connectors – The assembly has two electrical connectors designed to minimize resistance caused by vehicle vibration .
  2. Fuel tank sending unit – The unit includes the fuel level sensor, so you get accurate fuel gauge readings .
  3. Noise reduction – The design optimizes pump life and reduces fuel pump noise compared to aftermarket alternatives .
  4. GM Genuine Parts warranty – This part is backed by a minimum 12-month manufacturer warranty from General Motors .

Because it is a GM Genuine Part, it is designed, engineered, and tested to meet the same rigorous standards as the original equipment in your vehicle .

Vehicle Compatibility: Which Trucks Use the MU1417?

The MU1417 fuel pump assembly is specifically designed for 2004-2007 Chevrolet Silverado and GMC Sierra trucks . Here is a detailed breakdown of compatible vehicles:

Chevrolet Models:

  • 2004-2006 Chevrolet Silverado 1500 (4.8L V8, 5.3L V8)
  • 2004-2006 Chevrolet Silverado 2500 HD (6.0L V8, 8.1L V8)
  • 2004-2006 Chevrolet Silverado 3500 (6.0L V8, 8.1L V8)
  • 2005-2006 Chevrolet Silverado 1500 (4.3L V6)
  • 2007 Chevrolet Silverado 1500 Classic (4.3L V6, 4.8L V8, 5.3L V8)
  • 2007 Chevrolet Silverado 2500 HD Classic (6.0L V8, 8.1L V8)
  • 2007 Chevrolet Silverado 3500 Classic (6.0L V8, 8.1L V8)

GMC Models:

  • 2004-2006 GMC Sierra 1500
  • 2004-2006 GMC Sierra 2500
  • 2004-2006 GMC Sierra 3500

Note that the 2007 model year includes both the "Classic" body style (which uses the MU1417) and the new GMT900 platform. Always verify your vehicle's build date and engine configuration before ordering .

Common Symptoms of a Failing Fuel Pump

Before you replace your fuel pump, it helps to know the warning signs. Here are the most common symptoms of a failing fuel pump in 2004-2007 GM trucks:

Difficulty starting the vehicle – If the fuel pump is not building enough pressure, the engine may crank for a long time before firing up, or it may not start at all .

Poor acceleration – A weak fuel pump cannot deliver enough fuel under load, causing hesitation, stumbling, or a lack of power when you press the gas pedal .

Decreased fuel efficiency – When the pump is failing, the engine may run rich or lean, both of which hurt gas mileage .

Whining noise from the fuel tank – A healthy fuel pump makes a quiet hum. If you hear a loud whining or buzzing sound coming from the rear of the truck, the pump bearings may be wearing out .

Engine stalling – In severe cases, the pump may stop working altogether, causing the engine to stall while driving. This is a safety hazard and should be addressed immediately.

Diagnostic Trouble Codes (DTCs) Related to the Fuel Pump

If your check engine light is on, certain diagnostic trouble codes can point to a fuel pump issue. Common DTCs related to the MU1417 include:

  • P0230 – Fuel pump primary circuit malfunction
  • P0231 – Fuel pump secondary circuit low
  • P0232 – Fuel pump secondary circuit high

If you see these codes, it is a strong indication that the fuel pump module or its electrical connections need inspection.

Installation Tips for the MU1417 Fuel Pump Module

Replacing the fuel pump module is a job that many experienced DIYers can handle, but it requires careful attention to safety. Here are the key steps:

1. Relieve fuel pressure – Before you disconnect any fuel lines, remove the fuel pump fuse and crank the engine to relieve pressure in the system. This prevents fuel spray.

2. Drop the fuel tank – The MU1417 is an in-tank assembly, so you will need to lower or remove the fuel tank to access the pump module. On Silverado and Sierra trucks, the tank is mounted under the bed.

3. Disconnect the electrical connectors – The MU1417 has two electrical connectors. Carefully unplug them, noting the orientation .

4. Remove the lock ring – Use a hammer and a brass punch or a special lock ring tool to rotate the retaining ring counterclockwise. The ring can be stubborn, so take your time.

5. Install the new module – Place the new MU1417 assembly into the tank, making sure the seal is properly seated. Reinstall the lock ring and tighten it securely.

6. Reconnect everything – Reconnect the fuel lines, electrical connectors, and reinstall the tank. Prime the system by turning the key to the "ON" position for a few seconds (without starting) three times before cranking the engine.

Important: Some aftermarket fuel pump modules require a mating connector (such as GM part number 19300465) for the 4-way electrical connection. Verify your vehicle's wiring before installation .

Where to Buy the GM Genuine Parts MU1417 / 19352886

You can purchase the MU1417 fuel pump assembly from several sources:

GM Parts Direct – Websites like gmpartsdirect.com and gmpartsnow.com offer the genuine GM part. Keep in mind that some dealers list this as a "special order" part, meaning it may take 5-10 business days to ship from a GM warehouse .

NAPA Auto Parts – NAPA carries the MU1417 under the ACDelco brand (part number AC MU1417). ACDelco is the same as GM Genuine Parts for this application. NAPA offers a limited lifetime warranty on this part .

Summit Racing – Summit Racing lists the ACDelco MU1417 (part number ADO-MU1417) with a 5.0 out of 5 stars customer rating. Availability can vary, and some orders may ship from a GM facility .

Amazon – Aftermarket versions that replace the MU1417 are available on Amazon. For example, the OGATOO brand fuel pump assembly replaces E3609M, MU1415, MU1416, MU1417, and other OEM numbers. These aftermarket options are often more affordable but may not carry the same warranty as genuine GM parts .

Local GM dealership – Your local Chevrolet or GMC dealership can order the part for you. This is the best option if you want to ensure a perfect fit and have the warranty processed locally .

Why Choose KEMSO Fuel Pumps for Your Replacement?

When you are looking for a high-performance, reliable replacement fuel pump, KEMSO is a brand worth considering. KEMSO specializes in OEM replacement fuel pumps for cars, motorcycles, ATVs, and UTVs. Their products are designed to meet or exceed original equipment specifications, and they are backed by a lifetime warranty .

Here is what makes KEMSO fuel pumps stand out:

High-performance output – KEMSO pumps support up to 200 liters per hour, which is significantly higher than the original flow rate of 60-80 liters per hour. This means better fuel delivery, especially under heavy load or high-performance driving conditions .

OEM replacement design – KEMSO fuel pumps are engineered as direct replacements for the original pump. This means no modifications are needed during installation, and the pump fits perfectly into your vehicle's fuel system .

Lifetime warranty – Every KEMSO fuel pump comes with a lifetime warranty, giving you peace of mind that your investment is protected. The serialized fuel pump body ensures traceability and quality control .

Wide vehicle coverage – KEMSO offers pumps for a vast range of vehicles, including Chevrolet, GMC, Honda, Kawasaki, Polaris, Can-Am, BMW, and many more. Whether you are working on a Chevy Silverado or a Honda CBR1000RR, KEMSO has a solution .

To browse KEMSO's complete selection of fuel pumps and find the right one for your vehicle, visit their official website: https://www.kemsoracing.com/

Final Thoughts

The GM Genuine Parts MU1417 fuel pump module assembly (part number 19352886) is the correct OEM replacement for 2004-2007 Chevrolet Silverado and GMC Sierra trucks. When you experience symptoms like hard starting, poor acceleration, or a whining noise from the tank, replacing the fuel pump with a genuine GM part ensures reliable performance and a perfect fit. The MU1417 includes the fuel pump, sending unit, and seal, and it is backed by GM's 12-month warranty .

If you are looking for an alternative with higher performance and a lifetime warranty, consider KEMSO fuel pumps. Their OEM replacement pumps offer superior flow rates and are built to last. Visit https://www.kemsoracing.com/ to explore their lineup and find the perfect pump for your vehicle.


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