Walker 211-1045 Engine Coolant Level Sensor

Engine Coolant Level Sensor for GM Applications

Walker Products 211-1045 is an engine coolant level sensor built for vehicles that need accurate coolant reservoir monitoring. It is a direct-fit replacement for a wide range of Buick, Chevrolet, GMC, Oldsmobile, and Pontiac models, including Chevrolet Trailblazer, GMC Envoy, and Pontiac Grand Am applications.

Walker Products has supplied fuel system and engine management components since 1946, with manufacturing and engineering support focused on OE-level specifications and application accuracy. The 211-1045 coolant level sensor reflects that product-line approach for service replacement use.

Key Features

• Engine coolant level sensor for coolant reservoir level monitoring
• Walker Products part number 211-1045
• Direct replacement for multiple GM passenger car and SUV applications
• Cross-references OE-style numbers including 5S1450 and 22565474
• Built by an ISO 9001/IATF16949 certified manufacturer

Detailed Description

Walker Products 211-1045 is an engine coolant level sensor for GM vehicles across the 1992-2007 model years. It is used in applications such as 2003-2007 Chevrolet Trailblazer, 2003-2006 GMC Envoy, 2004-2007 Buick Rainier, 1997-2003 Chevrolet Malibu, and 1992-2005 Pontiac Grand Am. If you are replacing a failed coolant level sensor on a Buick, Chevrolet, GMC, Oldsmobile, or Pontiac platform, this part number provides a service-ready option for the listed applications.

This part cross-references OE-style numbers including 5S1450 and 22565474 for the same application.

What It Is Used For

• Restoring coolant level monitoring when the warning system is inaccurate
• Replacing a sensor that triggers a low coolant warning without an actual coolant loss
• Addressing intermittent coolant level signal issues in the reservoir
• Repairing a failed sensor on Chevrolet Trailblazer, GMC Envoy, and Buick Rainier models
• Servicing GM cars and SUVs with coolant level sensor faults

Installation Notes and Tips

Verify the connector style and reservoir application against the vehicle before installation. Confirm the part number 211-1045 against the existing sensor and match the vehicle year, make, and model to the fitment list. After installation, check the cooling system for proper coolant level and inspect for leaks or damaged wiring at the reservoir.

Quality Assurance

Walker Products manufactures engine sensors and related components to meet or exceed OEM standards and specifications. The company supports production with in-house manufacturing, product management, engineering, and technical documentation, and operates as an ISO 9001/IATF16949 certified manufacturer.