⚙️ Keep your GM truck running clean and strong—don’t settle for less!
The ACDelco GM Original Equipment 84545446 Emission Reduction Fluid Supply Pump Module is a GM-recommended replacement part designed specifically for diesel trucks. Crafted from durable alloy steel and manufactured to exact GM OE specifications, it guarantees a perfect fit, reliable performance, and long-lasting durability. Featuring a mechanical operation mode and easy tank mount installation, this pump module ensures your vehicle’s emission system runs efficiently and meets factory standards.
Brand | ACDelco |
Fit Type | Vehicle Specific Fit |
Vehicle Service Type | Truck |
Item dimensions L x W x H | 10.75 x 8.25 x 6.25 inches |
Item Weight | 2.3 Pounds |
Specification Met | OE |
Auto Part Position | Rear |
Outlet Connection Type | Barb |
Body Material | Alloy Steel |
Inlet Connection Type | Hose Barb |
Gas Type | Diesel |
Mounting Type | Tank Mount |
Operation Mode | Mechanical |
Product Grade | Replacement Part |
Manufacturer | ACDelco |
UPC | 193468541311 |
Model | GM Original Equipment |
Item Weight | 2.3 pounds |
Product Dimensions | 10.75 x 8.25 x 6.25 inches |
Country of Origin | Poland |
Item model number | 84545446 |
Exterior | Machined |
Manufacturer Part Number | 84545446 |
J**N
Fixed speed derating/limiting
Fit perfect for my 2018 L5P. Had issues with my truck derating my speed incrementally. I had already replaced the upstream and downstream nox sensors. Didn't fix it. Replaced this, and could see where the issue was on the old pump, within the female wiring connector. One of the pins looked to be arcing and failed. Haven't needed to go to the dealer for anything. Truck is running great.
A**R
Works as it's ment to.
Installed and truck runs fine now. Had code P1050, after install and clearing the code CEL went away. This part is known to go out fairly often. Hoping I can get good life out of this product.
J**S
Great
Works great
S**H
Failed within a month (twice)
I have purchased two of these and both have failed within a month... I'm starting to think this is a counterfeit part
J**
Oem
Starting to click and tick. I hope it last
M**E
Fixed my issue. OEM part
Original GM product. Fixed my P1050 code. Make sure to completely fill the def tank before starting. I only put one jug in to test it and it was still saying the tank was empty. Added a second jug and the warning went away. Way cheaper than the $1100 that the dealer wanted for the same part.
J**H
Great replacement
Great replacement
D**N
Worked like a charm
I had been contemplating deleting my truck after a previous pump didn't solve my problem. The pump I needed was for 2017 L5P Duramax engine and this was news to me that diesel trucks needed emissions items that are so expensive. My first replacement pump was purchased on Amazon and after the mess and stench of DEF fluid cleared my truck wasnt fixed and even took it to the dealership to check my work and the pump. Sadly it wasnt fixed and I still had to look a big warning on my dash screen and had to remove that pump, deal with 2.5gals of DEF fluid wasted($21 wasted) and my truck wasnt fixed. The refund and return policy of Amazon is the best but I just wanted my truck fixed. Now I ordered this pump, learned from previous mistake and only put 1 gal into the DEF tank and went for a drive to see if the problem was fixed. Initially the warning was still there, but after about 20mile drive the check engine light was off which was a sign that this pump worked 50% of my problem was solved. I pulled over and the warning was still showing on the dash but no check engine light came back, so I spent another $21 on 2.5gal bottle of DEF fluid(a full tank is 5gal). I waited for about 5mins, turned the key forward without starting the truck and the warning finally disappeared which meant the last thing to do was check the level. Scrolled through the menus(which were not available before) to the DEF level screen and it read"OK". Drove home with no other problems and now I am happy my truck is fixed for now.Update: Code for DEF level came back again along with def heater and my truck went into limp mode in Oct 20203. Now I have a big shiny lawn ornament that is a 2017 GMC Sierra Crew cab Long-bed dually because of this damn DEF pump again and now the truck is speed limited for the same issue.
Trustpilot
1 month ago
2 months ago