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 Gm Genuine Parts 15 50618 Air Conditioning Clutch Cycling

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

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$77.84

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Description

❄️ Keep your cool with GM-grade precision and power!

LIGHTWEIGHT COMPACT - At just 14g and 6.6x4.1x2.8 cm, it fits discreetly without hassle.
ROBUST 20 AMP CAPACITY - Handles high electrical loads ensuring reliable A/C clutch cycling.
SEAMLESS COMPATIBILITY - Designed exclusively for GM vehicles using the HVC system for plug-and-play ease.
PRECISION GM OE QUALITY - Engineered to exact GM specifications for flawless fit and function.
PRESSURE SENSITIVE CONTROL - Activates clutch based on precise pressure for optimal HVAC performance.

The ACDelco GM Genuine Parts 15-50618 Air Conditioning Clutch Cycling Switch is a GM-recommended, pressure-activated switch designed to replace your vehicle’s original component. Manufactured to meet GM OE standards, it ensures perfect fit, reliable 20 Amp current handling, and seamless integration with GM HVAC systems, delivering durability and consistent A/C performance.

Specifications

ASIN	B000NW6W6Q
Brand	GM GENUINE PARTS
Brand Name	GM GENUINE PARTS
Circuit Type	1-way
Compatible Devices	GM vehicles using the HVC system
Compatible with Vehicle Type	GM Vehicles
Connectivity Protocol	X-10
Connector Type	Clamp
Connector type	Clamp
Contact Material	Metal
Contact Type	Normally Open
Contact type	Normally Open
Control Method	Touch
Control Type	pressure
Controller Type	Push Button
Current Rating	20 Amps
Current rating	20 Amps
Customer Reviews	4.6 out of 5 stars 154 Reviews
Global Trade Identification Number	00707773151600
International Protection Rating	IP00
Item Dimensions	6.6 x 4.1 x 2.8 centimeters
Item Weight	14 g
Manufacturer	ACDelco
Material Type	Plastic
Model	15-50618
Mounting Type	PCB Mount
Number of Items	1
Number of Positions	2
Operating Voltage	5 Volts
Operating voltage	5 Volts
Operation Mode	Manual
Operation mode	Manual
Part Number	15-50618
Specification Met	Clutch
Switch Type	Pressure Switch
Terminal	Screw
UPC	707773151600
Unit Count	1 Count

Reviews

J**S

Very satisfying

It fit perfectly we got it to work excellent but it something else that’s not letting to blow cold air so have to figure that out but I would recommend it

28.08.2025

F**R

Worked perfectly. Note there is an O ring on the AC accumulator that is compatible with this.

The plastic body is make to be finger right. Your accumulator should have the O-ring on it. If you want a new O ring order a AC O ring kit for your vehicle.

15.12.2022

O**S

Is good working good

Good good

8.09.2025

X**U

very good

very good，I installed it on my car and it works fine.

20.06.2022

J**.

Cold A/C

Exact replacement. Solved my leak. A/C is back to cold!

27.06.2025

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