Walker 211-1127 Engine Coolant Temperature Sensor

Walker Engine Coolant Temperature Sensor 211-1127

Walker Products Sensor Only engine coolant temperature sensor 211-1127 provides the ECM with real-time coolant temperature data for accurate fuel control, ignition timing, cold start enrichment, and cooling fan operation. It is a direct-fit replacement for select Chevrolet Silverado, Chevrolet Avalanche, GMC Sierra, and GMC Yukon XL applications.

The Sensor Only line focuses on OE-style replacement sensors built to match factory resistance values, thermal response, and signal output. For technicians and DIY repairs, that means a straightforward replacement path when diagnosing a coolant temperature fault or a check engine light on a Chevrolet Silverado 2500 HD or GMC Sierra 3500.

• Blade terminal type with 2 terminals
• Female connector with oblong shape
• No wiring harness included
• Engine coolant temperature sensor for ECM temperature input
• Direct-fit design for factory-style installation

How this sensor works

This engine coolant temperature sensor monitors coolant temperature and sends the reading to the ECM so the engine can adjust fuel delivery, ignition timing, and radiator fan strategy. Walker 211-1127 is engineered for OE-style resistance and signal output, helping maintain consistent temperature reporting across the cooling system. This part cross-references Standard Ignition TX110 and SKF 12320 for the same application.

Vehicle fitment

• Fits 2007 Chevrolet Silverado 2500 HD Classic, N/A
• Fits 2007 Chevrolet Silverado 3500 Classic, N/A
• Fits 2007 GMC Sierra 2500 HD Classic, N/A
• Fits 2007 GMC Sierra 3500 Classic, N/A
• Fits 2003-2006 Chevrolet Avalanche 2500, N/A
• Fits 2003-2006 Chevrolet Silverado 2500 HD, N/A
• Fits 2003-2006 Chevrolet Silverado 3500, N/A
• Fits 2003-2006 Chevrolet Suburban 2500, N/A
• Fits 2003-2006 GMC Sierra 2500 HD, N/A
• Fits 2003-2006 GMC Sierra 3500, N/A
• Fits 2003-2006 GMC Yukon XL 2500, N/A

Common repair symptoms

• Incorrect coolant temperature readings at the ECM
• Hard cold starts or extended warm-up behavior
• Unstable fuel mixture or ignition timing control
• Cooling fan operation that does not match engine temperature
• Check engine light related to coolant temperature sensor faults

Installation notes and quality

Verify the connector style, terminal count, and sensor location before installation. This part uses a female oblong connector with blade terminals and does not include a wiring harness. Confirm the vehicle application against the listed fitment for 2003-2006 Chevrolet Silverado 2500 HD, 2003-2006 GMC Sierra 3500, and related models before replacement.

Walker Products builds this sensor to OE specifications for resistance, thermal response, and signal output, using heat-resistant materials suited for continuous coolant exposure, vibration, and temperature cycling.