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.

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ACDelco 15-51251 GM Original Equipment Heating and Air Conditioning Control Valve

Product ID: 458139555

Details

Brand
GM GENUINE
Exterior Finish
Chrome
Global Trade Identification Number
Inlet Connection Type
Compression
Item dimensions L x W x H
30.2 x 10.9 x
Material
Metal

🔥Restores optimal heating flow

⚙️OE-spec precision engineering

🛠️Durable metal globe valve

44621CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Stay warm, drive smart — GM precision heating control ⚙️

PRECISION GM OE FIT - Engineered to exact GM specifications for seamless installation and flawless performance.
BACKED BY GM WARRANTY - 12-month/12,000-mile warranty offers peace of mind with genuine GM quality assurance.
DURABILITY YOU CAN TRUST - Crafted from robust metal materials to withstand wear and deliver long-lasting reliability.
EFFORTLESS COMPATIBILITY - Compression inlet and NPT outlet connections designed for quick, hassle-free replacement.
RELIABLE HEATING CONTROL - Restores your vehicle’s heating system to factory-level efficiency, ensuring cozy drives every time.

The ACDelco 15-51251 GM Original Equipment Heating and Air Conditioning Control Valve is a genuine GM replacement part engineered to restore your vehicle’s heating performance. Manufactured to meet strict GM OE standards, this durable metal globe valve ensures precise temperature control and seamless fitment. Featuring compression inlet and NPT outlet connections, it offers easy installation backed by a 12-month/12,000-mile warranty, making it the trusted choice for maintaining your GM vehicle’s climate comfort.

Specifications

ASIN	B0031IBS0O
Brand Name	GM GENUINE PARTS
Connector Type	Compression
Country of Publication	USA
Customer Reviews	4.7 4.7 out of 5 stars (884)
Exterior Finish	Chrome
Global Trade Identification Number	00707773570869
Inlet Connection Type	Compression
Item Dimensions	30.2 x 10.9 x 2 Centimeters
Item Weight	0.2 Pounds
Manufacturer	GM GENUINE PARTS
Manufacturer Part Number	15-51251
Manufacturer Warranty Description	12 Months / 12,000 Miles (Parts Only)
Material Type	Metal
Model Number	15-51251
Number of Items	1
Number of Pieces	1
Number of Ports	2
Outlet Connection Size	0.25 Inches
Outlet Connection Type	NPT
Size	4.3 x 11.9 x 0.8 inches
Specification Met	oe
UPC	707773570869
Unit Count	1.0 Count
Valve Type	Globe Valve

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44621CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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