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.

General Motors Gm Genuine Parts 15 51254 Air Conditioning Evaporator

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

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$72.77

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Description

🌬️ Stay cool, stay precise — GM Genuine Parts keep your ride climate-smart!

BUILT TO LAST - Crafted from premium metal and plastic materials to withstand up to 125°C, delivering long-term durability.
TRUSTED BY THOUSANDS - Rated 4.6 stars by 97 users who experienced flawless performance and perfect fit every time.
EFFORTLESS INSTALLATION - Surface mount design guarantees a perfect fit and quick replacement—get back on the road faster.
RELIABLE CLIMATE CONTROL - Ensures your vehicle’s HVAC system maintains optimal cabin comfort with precise temperature readings.
SEAMLESS OEM INTEGRATION - Engineered to GM’s exact factory specs for flawless fit and function—no compromises.

The GM Genuine Parts 15-51254 Air Conditioning Evaporator Temperature Sensor is a GM-recommended OEM replacement designed to deliver precise temperature monitoring for your vehicle’s HVAC system. Manufactured to exact GM specifications with durable metal and plastic materials, it ensures reliable performance and a perfect fit. Rated highly by users, this sensor supports optimal climate control and long-lasting durability.

Specifications

ASIN	B0031I9Z4A
Best Sellers Rank	#136,737 in Automotive ( See Top 100 in Automotive ) #54 in Automotive Replacement Ambient Air Temperature Sensors
Brand	GM GENUINE PARTS
Brand Name	GM GENUINE PARTS
Country Of Origin	China
Customer Reviews	4.6 out of 5 stars 97 Reviews
Global Trade Identification Number	00707773570890
Included Components	Temperature Sensor
Item Dimensions	15.7 x 3 x 2 centimeters
Item Type Name	Temperature Sensor
Item Weight	0.01 Pounds
Item dimensions L x W x H	15.7 x 3 x 2 centimeters
Item weight	0.01 Pounds
Manufacturer	ACDelco
Material	Metal, Plastic
Material Type	Metal, Plastic
Model	15-51254
Mounting Type	Surface Mount
Mounting type	Surface Mount
Output Type	Push-Pull
Part Number	15-51254
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	Temperature
Style	Modern
Style Name	Modern
UPC	707773570890
Unit Count	1 Count
Upper Temperature Rating	125 Degrees Celsius

Reviews

A**R

Perfect fit

Great fit and work

12.11.2025

J**E

Entra sin problema en su posición

Funciona excelente

8.07.2025

R**Z

Buy this!

2010 Camaro 2SS I kind of figured this little thermostat was going out when my AC clutch would stop engaging once the outside temperature reached 90°. I researched this problem quite a bit and sure enough this little part got my AC working again! Very happy with this product.

2.04.2024

P**O

Excellent

Good

3.12.2025

D**A

It worked!

Fixed me not having A/C, before changing this I went through replacing the blend door, sensors, compressor and paying to have my Freon recharged. All for it to be this, START here people. Save yourself money!

30.07.2023

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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$72.77

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.