GM Genuine Parts Fuel Tank Pump Module
OE
Pack of 1

GM Genuine Parts Fuel Tank Pump Module

GM Part #85843540

ACDelco Part #85843540

MSRP$287.78*

GM Genuine Parts Fuel Pump Module Assemblies are designed, engineered, and tested to rigorous standards, and are backed by General Motors.

  • Helps provide a reliable fuel supply to your vehicle's engine
  • Designed to optimize pump life and help reduce fuel pump noise
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment [OE]

Pack of 1

About this product

GM Genuine Parts Fuel Pump Module Assemblies are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These module assemblies help deliver fuel to your vehicle's fuel injectors, providing a steady fuel supply to your vehicle's engine. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

  • Helps provide a reliable fuel supply to your vehicle's engine
  • Designed to optimize pump life and help reduce fuel pump noise
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment [OE]
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies

Product Specifications

Voltage12DC
Connector Quantity1
Terminal TypeBlade
Outlet Quantity1
Connector ColorWhite
Housing MaterialPlastic
Mounting Hardware IncludedNo
Gasket Or Seal IncludedYes
Universal Or Specific FitSpecific
Connector ShapeOval
Terminal Quantity6
Wire Harness IncludedNo
ClassificationOE
Outlet Outside Diameter0.37 in / 9.5 mm
Top Mount Diameter5.1 in / 129.5 mm
Resistance Ohms Full40ohm
Resistance Ohms Empty250ohm
Negative GroundYes
Installation WarningsYes
Pump TypeElectric
In Tank or ExternalIn Tank
Outlet TypeQuick Connect
Strainer IncludedYes
Lock Ring IncludedNo
Fuel Sending Unit IncludedYes
Fuel TypeGas
Housing Width6.46 in / 164 mm
Housing Length18.11 in / 460 mm
Connector GenderFemale
Terminal GenderMale
Grade TypeStandard Replacement

Limited Lifetime Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

Before purchasing and installing a fuel pump module assembly, make sure it is the correct fit for your vehicle.

  • Fuel contamination is one of the top reasons for fuel pump failure. For proper operation and longevity, it is critical to have a clean fuel system.
  • When servicing a fuel pump, always replace the strainer, and inspect the inline fuel filter for contamination (if equipped).
  • Before replacing a fuel pump, check for proper electrical connections, pressure, and volume.
  • Regularly inspect fuel pump module assembly for signs of damage or wear and replace them if signs of damage are found.

Signs of wear for fuel pump module assemblies include but are not limited to:

  • Fuel gauge reading incorrectly
  • Excessive or abnormal engine noise
  • Service engine soon light is illuminated
  • Improper engine idling, hesitation, or stalling
  • Excessive exhaust smoke
  • Noticeable fuel odors

ModelBody StyleTrimYear(s)
Silverado 2500 HDCrew Cab Pickup2020, 2021, 2022, 2023, 2024, 2025, 2026
Silverado 2500 HDExtended Cab Pickup2020, 2021, 2022, 2023, 2024, 2025, 2026
Silverado 3500 HDCrew Cab Pickup2020, 2021, 2022, 2023, 2024, 2025, 2026

Frequently Asked Questions

Yes. Always consult the Vehicle Owner's Manual or an expert technician before making any repairs or adjustments.

No. Noise, exhaust smoke, warning lights, hard starting, stalling, and hesitation can all be signs of a failing fuel pump. Please locate your nearest GM dealer, independent service center, or body shop to have the problem diagnosed.

Yes. An expert technician can inspect fuel pressure and/or examine engine data by codes with a scan tool to help determine potential concerns.

Yes. It is good practice to refuel with high quality fuel from well known, high volume, trusted fuel stations whenever possible.

Yes. Special tools may be required, e.g., a wire connector crimper, fuel pressure gauge, and lock ring removal tool.