GM GENUINE PARTS Air Conditioning Refrigerant Temperature Sensor 15-51267 (25953349) OE-fit, Prevents Evaporator Freeze

GM Genuine Parts 15-51267 (25953349) is an OE‑spec air conditioning refrigerant temperature sensor that monitors evaporator discharge temperature to help prevent coil freeze-up and enable correct compressor cycling.

Designed, engineered and validated to General Motors standards, this refrigerant temperature sensor fits the low‑side refrigerant line and delivers the data the vehicle control system uses to switch the A/C compressor on and off. Because it adheres to GM OE specifications for fit, form and function, it serves as a direct replacement for the factory component on compatible GM vehicles. Built for reliability and durability, the part is backed by GM Genuine Parts quality and arrives ready to install with the same performance expectations as the original equipment.

How does this sensor protect the evaporator from freezing?

The sensor measures the refrigerant temperature leaving the evaporator core and sends that signal to the HVAC control module. When temperatures approach the freeze threshold, the module can stop compressor operation or modify system parameters to prevent ice buildup on the evaporator. This helps maintain steady airflow and consistent cabin climate control.

• Monitors low‑side refrigerant discharge temperature in real time
• Signals the HVAC control unit to cycle the compressor appropriately
• Reduces risk of evaporator icing and airflow restriction

Will this GM Genuine Parts sensor fit my vehicle and match OE performance?

This unit is produced to GM OE specifications and is intended as the recommended replacement for the original factory sensor on compatible GM models. It replicates the original part’s physical dimensions, electrical characteristics and connector type to ensure plug‑and‑play installation. Always verify part numbers and vehicle application to confirm compatibility.

• Manufactured to match GM OE fit, form, and function
• Direct replacement for the factory sensor on supported GM vehicles
• Check vehicle year, make, model, and existing part number before purchase

What are the key benefits of choosing this GM Genuine Parts sensor?

Choosing the GM Genuine Parts sensor preserves the original equipment performance and helps ensure system longevity by maintaining proper compressor cycling. The part is engineered to the same quality standards as the component installed during vehicle production, reducing compatibility surprises and installation troubleshooting. It also simplifies warranty and service expectations when compared with aftermarket generic substitutes.

• Quality and reliability backed by General Motors
• OE‑level fitment reduces installation adjustments and failures
• Helps maintain consistent cabin comfort and HVAC efficiency

How do I replace the refrigerant temperature sensor and what should I watch for?

Replacement typically requires locating the low‑side refrigerant line near the evaporator, disconnecting the electrical connector, and extracting the old sensor before installing the new unit. Follow vehicle service manual guidance for depressurizing the system, safe handling of refrigerant lines, and torque specifications. If you’re not comfortable working on A/C systems, have a qualified technician perform the service.

• Depressurize A/C system per service procedures before removal
• Confirm connector type and wiring match before final installation
• Follow torque and sealing instructions to avoid leaks or damage

Who is this part for: This GM Genuine Parts 15-51267 (25953349) refrigerant temperature sensor is intended for owners, professional technicians and repair shops working on compatible GM vehicles who want a direct OE replacement. It’s ideal when restoring correct A/C cycling behavior after sensor failure, addressing evaporator icing problems, or when maintaining OEM service standards during HVAC repairs. Purchase if you need an exact‑fit GM‑validated sensor that matches factory performance and installation expectations.