84545443 | Genuine GM® Diesel Exhaust Fluid (DEF) Supply Pump Module for Sierra and Silverado

SKU: 84545443 MPN: 84545443

Ignite flawless DEF operation with the Genuine GM Diesel Exhaust Fluid Supply Pump Module. Condition: new. Part number: 84545443. Designed for Silverado & Sierra 2500–3500 vehicles with 6.0L CNG and 6.6L Diesel engines.

$545.00
No Core Charge
3 in stock

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Product Description

Product Name Diesel Exhaust Fluid (DEF) Supply Pump Module Product Name Diesel Exhaust Fluid (DEF) Supply Pump Module
Condition New Condition New
Brand GM® Brand GM®
Part Number 84545443 Part Number 84545443
Vehicle Compatibility
GMC Sierra 2500 HD (2017-2019) GMC Sierra 2500 HD (2017-2019)
GMC Sierra 3500 HD (2017-2019) GMC Sierra 3500 HD (2017-2019)
Chevrolet Silverado 2500 HD (2017-2019) Chevrolet Silverado 2500 HD (2017-2019)
Chevrolet Silverado 3500 HD (2017-2019) Chevrolet Silverado 3500 HD (2017-2019)
Engine Compatibility
Engine 6.0L V8 CNG/Flex/Gas Engine 6.0L V8 CNG/Flex/Gas
Engine 6.6L V8 Diesel Engine 6.6L V8 Diesel
Body & Trim
Body & Trim High Country, LT, LTZ, WT Body & Trim High Country, LT, LTZ, WT
Body & Trim Base, Denali, SLE, SLT Body & Trim Base, Denali, SLE, SLT

Useful Information

Description and Purpose:

The Genuine GM Diesel Exhaust Fluid (DEF) Supply Pump Module comes new and is identified with Part number: 84545443. It sustains continuous fluid pressure for the SCR system using internal filtration and insulated pump electronics. Designed for 2017–2019 Sierra and Silverado HD vehicles, it protects the dosing injector from contamination while maintaining accurate DEF delivery during both idle cycles and demanding highway pulling.

Why Replacement is Important:

Pump wear leads to pressure instability, triggering emissions faults and eventually reducing available power to protect the system.

Impact on Vehicle Performance:

Installing a properly functioning pump keeps exhaust treatment smooth, improves uptime, and allows the vehicle to maintain full pulling strength without restrictions.

Manufacturer Information: 

General Motors® focuses on dependable functionality, manufacturing components that help maintain precise operation and reliable driving capability.

Tags & Category: DEF Pump Module, Diesel Exhaust Fluid System, Emissions Control Components, GM Truck Parts, Diesel Exhaust Fluid Supply Pump, DEF Pump Module GM, DEF Pump Silverado, DEF Pump Sierra, 6.0L CNG, 6.6L Diesel, HD Truck Emissions, DEF System Pump, GM Emissions Component, Sierra 2500, Sierra 3500, Silverado 2500, Silverado 3500

Warranty:

Parts Finder Q offers a 365-days warranty for all types of parts in any condition. The warranty applies exclusively to purchases made directly through our website (partsfinderq.com). Please note that purchases made through third-party platforms like eBay or Amazon are not covered by this warranty.

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  • Icon Truck, Fast Delivery
    Free shipping over $199 Place an order today and receive it on Mar 6
  • Clock Icon
    Orders placed before 7-PM EST will ship same business day
  • Location icon, warehouse pickup point.
    Pickup available usually ready in 24 hours
  • Need it fast? We offer overnight shipping

    Contact us to check if overnight next-day delivery is available for your order - PN: 84545443