How does my vehicle’s AC system work?

The AC compressor pressurizes refrigerant gas, which moves to the condenser. The gas releases heat, condensing into a high-pressure liquid. After cooling, the liquid passes over evaporator coils to cool the air as it is blown through the vents.

What are the signs the system needs service?

Common indicators of an air conditioning system in need of service include warm and/or weak airflow through the vents, frequent on/off cycling of the system and a strange or musty odor.

Is the puddle of water under my car a sign of AC problems?

Not necessarily. Condensation typically builds up on the AC evaporator and the water is drained at the bottom of the vehicle. That’s normal, but a larger puddle combined with reduced AC performance could indicate a problem.

Does low refrigerant mean there’s a leak in the system?

In most cases the answer is yes. AC systems in older cars will experience refrigerant leakage over time, but a later-model vehicle that needs continual refrigerant recharging typically indicates a leak.

Can a new cabin air filter improve AC performance?

Yes. A very dirty or clogged cabin air filter can reduce the airflow of the AC system, reducing its cooling efficiency and making the system work harder than normal. Periodic cabin filter replacements help the AC system keep its cool.

ACDelco 15-11125 GM Original Equipment Water Pump Outlet Assembly with Thermostat

Product ID: 206644768

Details

Automotive Fit Type
Vehicle Fit
Brand
GM GENUINE
Global Trade Identification Number
Item weight
249 g
Manufacturer
ACDelco
Material
Bronze

🔥Integrated thermostat control

🚗Direct replacement for GM vehicles

⚙️GM OE precision fit

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AED 1013

Duties & taxes included

In stock

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Description

🔥 Keep your engine cool and your ride flawless with GM precision! ⚙️

PRECISION GM OE FIT - Engineered to exact GM specifications for flawless installation and optimal performance.
LIGHTWEIGHT COMPACT - At just 249g and compact dimensions, it supports efficient engine design without added bulk.
SEAMLESS COMPATIBILITY - Designed specifically for GM models like the 2015 GMC Sierra, eliminating check engine light issues.
DURABILITY YOU CAN TRUST - Built with high-quality materials ensuring long-lasting reliability under all driving conditions.
INTEGRATED THERMOSTAT HOUSING - Combines thermostat and outlet assembly for streamlined engine cooling management.

The ACDelco 15-11125 GM Original Equipment Water Pump Outlet Assembly with Thermostat is a GM-recommended replacement part manufactured to exact OE standards. It integrates the thermostat housing and radiator hose outlet, ensuring perfect fit and reliable engine cooling for GM vehicles, including the 2015 GMC Sierra. Lightweight and durable, it delivers long service life and helps maintain optimal engine performance.

Specifications

ASIN	B01K8BJ7BS
Brand	GM GENUINE PARTS
Customer Reviews	4.7 4.7 out of 5 stars (737)
Date First Available	11 Aug. 2016
Item Weight	249 g
Item model number	15-11125
Manufacturer	ACDelco
Manufacturer part number	12674639
OEM Part Number	12674639
Position	Front
Product Dimensions	16.51 x 10.67 x 10.67 cm; 249.48 g

Reviews

S**L

Used in for 2015 gmc Sierra . Check engine light gone . Fits like glove

6.07.2025

A**R

المنتج ممتاز وسعر أرخص من الوكالة

8.07.2025

S**.

Excelente producto y rapido envio

22.04.2025

O**6

Fit exactly as described based on specs. Worked perfectly after install. Happy with product

22.02.2026

D**R

I ordered this for my 2016 Silverado LTZ. I was having issues with the temperature barely getting above 150° most of the time it wouldn’t get above 140. And with winter rapidly approaching, I decided to give it a try. Installation was quite simple. This thermostat and housing is a one piece assembly unlike the traditional ones with an aluminum reusable housing, With this particular design you just throw the old housing away and install the whole new assembly. Everything fit perfectly the instructions were straightforward and boy What a difference in heat output. You can barely hold your hand in front of the vent now and she consistently runs at 205*F after if she warms up. Very satisfied.!!!

26.02.2025

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