Holstein 2CTS0187 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for GM Applications

Holstein Parts 2CTS0187 is an engine coolant temperature sensor for select Cadillac, Chevrolet, Buick, and GMC vehicles. It provides direct fitment coverage across multiple GM platforms, including applications on the water pump and near-engine locations where specified.

Key Features

• Engine coolant temperature sensor for monitoring coolant temperature in the engine cooling system
• Fits select 2013-2026 Cadillac, Chevrolet, Buick, and GMC models
• Application-specific coverage for locations such as water pump and near-engine mounting points
• Cross-references OE part numbers 12636534 and 12656444
• Holstein Parts 2CTS0187 for direct replacement use

Detailed Description

Holstein Parts 2CTS0187 is an engine coolant temperature sensor built for a wide range of GM vehicles, including Chevrolet Camaro, Malibu, Colorado, Equinox, Impala, Traverse, and Blazer; Cadillac ATS, CTS, CT6, CT4, and XTS; plus Buick and GMC applications. This sensor supports accurate coolant temperature reporting to the engine control system, helping maintain proper cooling-system operation and engine management. The Holstein Parts line focuses on application-specific replacement parts, and this part number is listed for multiple OE-style interchange references.

This part cross-references OE numbers 12636534 and 12656444 for the same application.

What It Helps Address

• Incorrect coolant temperature readings
• Illuminated engine warning lights related to temperature sensing
• Cooling system control issues tied to faulty sensor input
• Hard starting or drivability concerns caused by inaccurate engine temperature data
• Temperature-related diagnostic trouble codes

Installation Notes and Tips

• Verify the exact year, make, model, and engine configuration before ordering.
• Check the listed notes for placement details such as on the water pump or near engine.
• Inspect the connector style and terminal configuration on vehicles with plated connector or gold terminal pin notes.
• Confirm the original part number and compare it to 2CTS0187 before installation.

Quality Assurance

Holstein Parts 2CTS0187 is cataloged as an OE-referenced replacement sensor for the listed GM applications, with fitment coverage spanning 2013-2026 across Cadillac, Chevrolet, Buick, and GMC models.