Holstein 2CTS0221 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for GM Applications

Holstein Parts 2CTS0221 is an engine coolant temperature sensor built for direct replacement in a wide range of GM vehicles. It uses a 2-terminal blade connection with an oval female connector to support accurate coolant temperature signal transfer to the engine management system.

Compatible With Buick Century, Regal; Chevrolet Impala, Monte Carlo, Camaro, Lumina, Caprice; Pontiac Grand Prix, Bonneville, Montana, Firebird; and other listed applications across 1990-2005 model years.

Key Features

• Engine coolant temperature sensor for temperature signal monitoring
• Blade terminal type with 2 terminals
• Oval female connector for application-specific fitment
• No wiring harness included
• Holstein Parts 2CTS0221 replacement part number

Product Details

Holstein Parts 2CTS0221 is an OE-style engine coolant temperature sensor for GM platforms that rely on a precise coolant temperature input for engine control. This sensor is used in applications such as Buick Century and Chevrolet Impala, as well as Pontiac Grand Prix and Oldsmobile Silhouette models listed in the fitment data. The connector design, terminal count, and blade-style interface support a direct electrical connection where the original sensor uses the same configuration. This part cross-references ACDelco 10096163 and Standard Motor Products SU1302 for the same application.

What This Sensor Helps Address

• Incorrect coolant temperature readings at the engine control system
• Temperature-related drivability concerns tied to sensor signal loss
• Illuminated check engine light from coolant temperature sensor faults
• Hard starting or rough running associated with inaccurate temperature input
• Cooling system monitoring issues on GM passenger cars and vans

Installation Notes and Tips

Verify the connector shape, terminal count, and sensor location before installation. Confirm the vehicle’s original connector is an oval female style with blade terminals, and inspect the harness for corrosion or damaged terminals before connecting the new sensor. Use the vehicle service procedure for coolant draining, torque, and sealing requirements, and clear diagnostic trouble codes after installation if needed.

Quality Assurance

Holstein Parts supplies replacement components for automotive cooling and engine management applications. Part number 2CTS0221 is built to match the listed fitment and electrical configuration for the specified GM vehicles.