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Walker 211-2011 Engine Coolant Temperature Sensor
| Brand | Walker 211-2011 |
|---|---|
| Product line | Walker Products |
| Fits | Buick, Chevrolet, GMC, Isuzu, Saab, and Oldsmobile · 27 vehicles |
OE-standard quality. Built to meet or exceed OEM specifications.
Engine sensor. Measures coolant temperature for accurate engine management.
Walker Products. A long-standing aftermarket manufacturer of fuel system and sensor components.
Cross-references NTK EF0149, Standard Ignition TX108 and 5S1603 for the same application. See all 8.
Engine Coolant Temperature Sensor Overview
Walker Products 211-2011 is an engine coolant temperature sensor for select GM and related applications. It provides the temperature signal used by the engine management system to monitor coolant conditions and support accurate fuel and ignition control. This part number 211-2011 is a direct-fit replacement for vehicles including the Chevrolet Trailblazer, GMC Envoy, and Buick Rainier.
Key Features
- Engine coolant temperature sensor for engine management systems
- Built by Walker Products, a long-standing manufacturer of fuel system and engine sensor components
- Manufactured to meet or exceed OEM standards and specifications
- ISO 9001/IATF16949 certified production environment
- Cross-references NTK EF0149 and Standard Ignition TX108 for the same application
Detailed Description
Walker Products 211-2011 is part of the Walker Products engine sensor lineup, backed by in-house manufacturing, engineering, product management, and technical support. The brand has supplied automotive fuel system and engine management components since 1946, with a focus on accurate vehicle applications and quality control. This coolant temperature sensor is used in applications such as 2002-2005 Chevrolet Trailblazer, 2002-2005 GMC Envoy, and 2004-2005 Buick Rainier, along with other listed fitments.
Compatible With 2002-2005 Chevrolet Trailblazer, 2002-2005 Chevrolet Trailblazer EXT, 2002-2005 GMC Envoy, 2002-2005 GMC Envoy XL, 2004-2005 GMC Envoy XUV, 2004-2005 Buick Rainier, 2003-2005 Isuzu Ascender, 2005 Saab 9-7x, and 2002-2004 Oldsmobile Bravada. Part number 211-2011 is also listed for these vehicle applications.
Common Issues This Part May Address
- Incorrect coolant temperature readings in the engine control system
- Hard starting or rough cold operation caused by inaccurate temperature input
- Cooling fan or gauge behavior affected by a faulty sensor signal
- Check engine light concerns related to coolant temperature sensor performance
- Fuel mixture or drivability issues tied to temperature data errors
Installation Notes and Tips
Verify the connector style, thread size, and engine application against the original sensor before installation. Inspect the cooling system for leaks or contamination that could affect sensor readings, and confirm the connector terminals are clean and secure. Use the vehicle fitment list to match the correct application for Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and related models.
Quality Assurance
Walker Products manufactures engine sensors to meet or exceed OEM standards and specifications. The company supports production with engineering and technical staff, and its facilities operate under ISO 9001/IATF16949 certification for quality management.
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2005 | Buick | Rainier | — | 4.2L | L6 | N/A | Walker Products |
| 2005 | Chevrolet | Trailblazer | — | 4.2L | L6 | N/A | Walker Products |
| 2005 | Chevrolet | Trailblazer EXT | — | 4.2L | L6 | N/A | Walker Products |
| 2005 | GMC | Envoy | — | 4.2L | L6 | N/A | Walker Products |
| 2005 | GMC | Envoy XL | — | 4.2L | L6 | N/A | Walker Products |
| 2005 | GMC | Envoy XUV | — | 4.2L | L6 | N/A | Walker Products |
| 2005 | Isuzu | Ascender | — | 4.2L | L6 | N/A | Walker Products |
| 2005 | Saab | 9-7x | — | 4.2L | L6 | N/A | Walker Products |
| 2004 | Buick | Rainier | — | 4.2L | L6 | N/A | Walker Products |
| 2004 | Chevrolet | Trailblazer | — | 4.2L | L6 | N/A | Walker Products |
| 2004 | Chevrolet | Trailblazer EXT | — | 4.2L | L6 | N/A | Walker Products |
| 2004 | GMC | Envoy | — | 4.2L | L6 | N/A | Walker Products |
| 2004 | GMC | Envoy XL | — | 4.2L | L6 | N/A | Walker Products |
| 2004 | GMC | Envoy XUV | — | 4.2L | L6 | N/A | Walker Products |
| 2004 | Isuzu | Ascender | — | 4.2L | L6 | N/A | Walker Products |
| 2004 | Oldsmobile | Bravada | — | 4.2L | L6 | N/A | Walker Products |
| 2003 | Chevrolet | Trailblazer | — | 4.2L | L6 | N/A | Walker Products |
| 2003 | Chevrolet | Trailblazer EXT | — | 4.2L | L6 | N/A | Walker Products |
| 2003 | GMC | Envoy | — | 4.2L | L6 | N/A | Walker Products |
| 2003 | GMC | Envoy XL | — | 4.2L | L6 | N/A | Walker Products |
| 2003 | Isuzu | Ascender | Base | 4.2L | L6 | N/A | Walker Products |
| 2003 | Oldsmobile | Bravada | — | 4.2L | L6 | N/A | Walker Products |
| 2002 | Chevrolet | Trailblazer | — | 4.2L | L6 | N/A | Walker Products |
| 2002 | Chevrolet | Trailblazer EXT | — | 4.2L | L6 | N/A | Walker Products |
| 2002 | GMC | Envoy | — | 4.2L | L6 | N/A | Walker Products |
| 2002 | GMC | Envoy XL | — | 4.2L | L6 | N/A | Walker Products |
| 2002 | Oldsmobile | Bravada | — | 4.2L | L6 | N/A | Walker Products |
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