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GM GENUINE PARTS

GM Genuine Parts 84545446 Emission Reduction Fluid Supply Pump Module

Based on 134 reviews
Condition: New
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$568.77

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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Oct 31
Order within 1 hour and 38 minutes

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At a glance

Condition
New
Dimensions
8.25 x 6.25 x 10.75 in
Weight
2.3 lb
Material
Alloy Steel
Fit Type
Vehicle Specific Fit
Vehicle Service Type
Truck
Part Interchange Info
replacement
In the box
Diesel Exhaust Fluid (DEF) Pump

Features 3

  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function

Description

ACDelco GM Original Equipment Diesel Exhaust Fluid (DEF) Pump is a GM- recommended replacement component for one or more of the following vehicle systems: ignition, and/or engine fuel management. This original equipment pump will provide the same performance, durability, and service life you expect from General Motors. WARNING: CA Prop 65 - Cancer and Reproductive Harm

Specs 32

Brand GM GENUINE PARTS
Fit Type Vehicle Specific Fit
Vehicle Service Type Truck
Item dimensions L x W x H 8.25 x 6.25 x 10.75 inches
Material Alloy Steel
Compatible with Vehicle Type Truck
Part Interchange Info replacement
Auto Part Position Rear

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Oct 31

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

Direct fit
Easy installation no need to program to vehicle.
Reviewed in the United States on April 16, 2026 by Sergio Martinez Jr.
Recommend this pump.
Worked great! Ordered the tool for it also. You will want it. KEEP in mind after you install the pump to clear the codes you have to go to a dealer and get the parameters reinstalled in the computer.
Reviewed in the United States on December 5, 2025 by Randal Carter
DEF heater assy OEM
Had a GM Tech turn me on to this OEM part and saved me hundreds of dollars
Reviewed in the United States on September 14, 2026 by Mark c.
GM DOES NOT WARRENTY THIER PRODUCTS!
GM did Not warranty this pump after only 1 month of install, heater circuit failed on this pump like the last one did. Not only did GM sell a GM Genuine piece of crap, they won't even stand behind the product. LUCKILY Amazon worked with me! This part fit my 2017 Chevy 2500 HD, but it's very flawed since the heater circuits burn out. ... show more
Reviewed in the United States on December 3, 2025 by Derrick
Works perfect
No problems with it
Reviewed in the United States on September 8, 2026 by Frank Saldivar
Very fast delivery and good price
Review Image by Thomas Dominello
Just like it said GM Genuine part , it was packaged well and no damage , I installed it right after I received it and everything worked well , cleared the code and its been 2 days and no check engine light .
Reviewed in the United States on November 23, 2025 by Thomas Dominello
The pump worked for me and reset the light on its own. Let the DEF soak in before starting the V
It worked. Drained the tank underneath, removed the old, and installed the new. Added 1 gallon in case I had to re-open. I heard it bubbling and sloshing. Guess DEF was getting into the pump. Once it stopped, I fired the engine up and drove 20 miles. Check Engine light stayed on so I called the dealer to schedule a re-learn. Got in the truck the next day and when I started it up, everything was back to normal. Purchase the A/C Delco made in Poland. That’s what I learned from all the negative reviews. Spending $562 is better than $2,394 at the dealer. Finally paying it off. 2018 with 56K miles. Deleting was not an option for me. Someone did offer a deal for $2K. Nah, if the truck came with it, it stays. Good Luck. If you’ve dealt with GM the last 2-3 decades, you know their policies or lack thereof. ... show more
Reviewed in the United States on March 10, 2026 by Freddie Krueger
Oem
Starting to click and tick. I hope it last
Reviewed in the United States on April 11, 2025 by J.Rudes
How it works
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