ACDelco 15-51107 Engine Coolant Temperature Sensor Replacement, 12-Month Warranty & USA Support

Restore dependable engine coolant temperature monitoring with the Wholesale Sensors Replacement ACDelco 15-51107 Engine Coolant Temperature Sensor. Designed as an OEM-style aftermarket replacement for compatible vehicles, this sensor monitors engine coolant temperature and provides electrical feedback to the vehicle’s temperature monitoring and control systems.

A properly functioning engine coolant temperature sensor supports accurate temperature readings, engine management, and cooling system operation where applicable.

Replacement for ACDelco 15-51107

Designed to replace the following OEM and aftermarket part numbers:

• ACDelco 15-51107
• GM 19189478

Additional aftermarket interchange references:

• Four Seasons 36403
• Four Seasons 901951
• Standard Motor Products TX3
• Motorad 1TS1209
• Holstein 2CTS0001
• Global Parts Distributors 1711697

These interchange references identify related aftermarket applications. Verify the original sensor specifications before purchasing.

Compatible Chevrolet, GMC, Buick, Cadillac and Other Vehicles

The ACDelco 15-51107 coolant temperature sensor replacement is intended for select vehicles equipped with the corresponding original temperature sensor.

Published aftermarket fitment catalogs include applications such as:

• Chevrolet Silverado 1500, 1999–2013
• Chevrolet Silverado 2500 HD, 2001–2009
• Chevrolet S10, 1985–2004
• Chevrolet Blazer, 1987–2005
• Chevrolet Astro, 1985–2005
• Chevrolet Cavalier, 1984–2002
• Chevrolet Camaro, 1982–2002
• Chevrolet Express 1500, 1996–2014
• GMC C1500, 1988–1999
• Buick Century, 1980–2005
• Buick LeSabre, select 1980–2005 applications
• Cadillac DeVille, 1980–2005
• Pontiac Grand Am, select 1985–2005 applications
• Pontiac Grand Prix, select 1985–2008 applications

These are catalog application ranges, not confirmation that every engine or trim within those years uses the same sensor.

Always verify the complete vehicle year, make, model, engine, VIN, and original part number before ordering.

Accurate Engine Coolant Temperature Monitoring

The ACDelco 15-51107 replacement coolant temperature sensor detects changes in engine coolant temperature and provides electrical feedback to compatible vehicle systems.

Depending on the vehicle, coolant temperature information may support:

• Engine temperature monitoring
• Electronic engine management
• Cold-start operating adjustments
• Fuel mixture control
• Ignition timing adjustments
• Cooling fan operation
• Temperature-related diagnostics

The sensor’s exact function depends on the vehicle’s original electrical system.

A defective coolant temperature sensor may send inaccurate information, affecting the systems that depend on its readings.

Helps Resolve Common Coolant Temperature Sensor Problems

A faulty engine coolant temperature sensor may contribute to:

• Inaccurate coolant temperature readings
• Erratic dashboard temperature gauge behavior
• Hard starting, particularly in cold weather
• Poor fuel economy
• Rough idle or inconsistent engine operation
• Irregular radiator fan operation
• Check engine light illumination
• Temperature sensor circuit faults
• Incorrect engine temperature feedback

Replacing a confirmed defective sensor may help restore normal temperature monitoring and related vehicle functions.

Similar symptoms may result from wiring damage, thermostat problems, cooling system faults, or electronic control issues.

Engine Coolant Temperature Sensor Error Codes

Depending on the vehicle and diagnostic system, a faulty coolant temperature sensor circuit may be associated with:

• P0115: Engine Coolant Temperature Sensor Circuit Malfunction
• P0116: Engine Coolant Temperature Sensor Circuit Range or Performance
• P0117: Engine Coolant Temperature Sensor Circuit Low Input
• P0118: Engine Coolant Temperature Sensor Circuit High Input
• P0119: Engine Coolant Temperature Sensor Circuit Intermittent

These codes do not necessarily indicate that the sensor itself has failed. Damaged wiring, poor electrical connections, and other cooling system problems can produce similar faults.

OEM-Style Electrical Connection

The ACDelco 15-51107 reference design uses a 2-terminal, oval-shaped female connector configuration with blade-type terminals.

The Wholesale Sensors replacement should be matched to the original sensor’s electrical characteristics, connector arrangement, and mounting specifications.

Correct fitment is essential for dependable temperature feedback and proper operation.

Engine Coolant Temperature Sensor Installation

Before installation, turn off the engine and allow the cooling system to cool completely.

Locate the original coolant temperature sensor according to the vehicle manufacturer’s service instructions.

Disconnect the electrical connector and remove the original sensor using the appropriate tools.

Install the correctly specified replacement, following the manufacturer’s sealing and tightening instructions.

Reconnect the electrical connector and restore any coolant removed during service.

After installation, inspect for coolant leaks and verify temperature readings using an appropriate diagnostic procedure.

Never remove a coolant temperature sensor while the cooling system is hot or pressurized.

Professional installation is recommended when access, coolant handling, or diagnostic procedures require specialized equipment.

Ideal for Automotive Repairs and Maintenance

The Wholesale Sensors Replacement ACDelco 15-51107 Engine Coolant Temperature Sensor is suitable for compatible automotive repair and maintenance applications.

It provides an aftermarket replacement option for vehicle owners, professional mechanics, fleet service teams, and automotive technicians replacing a confirmed faulty coolant temperature sensor.

Accurate temperature monitoring supports reliable vehicle operation and helps maintain proper performance of compatible engine and cooling system controls.

12-Month Warranty and USA-Based Support

Wholesale Sensors supplies aftermarket automotive temperature sensors, pressure transducers, switches, thermistors, and related sensing components.

The Wholesale Sensors Replacement ACDelco 15-51107 Engine Coolant Temperature Sensor provides an OEM-style replacement option for compatible vehicles requiring this sensor configuration.

Every replacement includes a 12-month warranty and responsive USA-based customer support, giving automotive technicians, vehicle owners, and repair professionals added confidence.

Choose Wholesale Sensors for dependable replacement automotive sensing components and reliable customer support.