Walker 225-1174 Manifold Absolute Pressure Sensor

Walker 225-1174 Manifold Absolute Pressure Sensor

Walker Products 225-1174 is a manifold absolute pressure sensor for select Chevrolet, GMC, Buick, and Cadillac applications. It is built to meet or exceed OEM standards and specifications, with application-specific coverage for vehicles such as the Chevrolet Equinox, Malibu, Silverado HD, GMC Sierra HD, and Terrain.

Walker Products has supplied fuel system and engine management components since 1946, supporting the automotive aftermarket with engineered parts and technical documentation. The Walker Products line includes sensors and fuel system components backed by in-house manufacturing, product management, and engineering resources.

Key Features

• Manifold Absolute Pressure Sensor for engine load and intake manifold pressure monitoring
• OE-style replacement for select Chevrolet, GMC, and Buick vehicles
• Built to meet or exceed OEM standards and specifications
• Application coverage includes 2016-2024 model years
• Cross-references Standard Ignition AX461 for the same application
• Part number: 225-1174

Detailed Description

This Walker MAP sensor is used in engine management systems that rely on manifold pressure data to help the powertrain control module calculate fuel delivery and ignition timing. It is a direct-fit service part for select 2021-2024 Chevrolet Equinox, 2022-2024 Chevrolet Malibu, 2021-2024 Chevrolet Silverado 2500 HD, 2021-2024 Chevrolet Silverado 3500 HD, 2021-2024 GMC Sierra 2500 HD, 2021-2024 GMC Sierra 3500 HD, and 2021-2024 GMC Terrain applications, along with earlier Buick, Chevrolet, and GMC models listed below. If you are replacing a MAP sensor on a Chevrolet Malibu, GMC Terrain, or Silverado HD, Walker 225-1174 provides application-specific coverage for the listed vehicles.

Vehicle Fitment

• Fits 2021-2024 Chevrolet Equinox, N/A
• Fits 2022-2024 Chevrolet Malibu, N/A
• Fits 2021-2024 Chevrolet Silverado 2500 HD, N/A
• Fits 2021-2024 Chevrolet Silverado 3500 HD, N/A
• Fits 2021-2024 GMC Sierra 2500 HD, N/A
• Fits 2021-2024 GMC Sierra 3500 HD, N/A
• Fits 2021-2024 GMC Terrain, N/A
• Fits 2021-2022 Buick Encore, N/A
• Fits 2021-2022 Chevrolet Trax, N/A
• Fits 2020 Chevrolet Equinox, N/A
• Fits 2020 Chevrolet Malibu, N/A
• Fits 2020 Chevrolet Silverado 2500 HD, N/A
• Fits 2020 Chevrolet Silverado 3500 HD, N/A
• Fits 2020 GMC Sierra 2500 HD, N/A
• Fits 2020 GMC Sierra 3500 HD, N/A
• Fits 2020 GMC Terrain, N/A
• Fits 2017-2019 Buick Cascada, N/A
• Fits 2018-2019 Buick Encore, N/A
• Fits 2018-2019 Chevrolet Cruze, N/A
• Fits 2018-2019 Chevrolet Equinox, N/A
• Fits 2018-2019 Chevrolet Malibu, N/A
• Fits 2018-2019 Chevrolet Silverado 2500 HD, N/A
• Fits 2018-2019 Chevrolet Silverado 3500 HD, N/A
• Fits 2018-2019 GMC Sierra 2500 HD, N/A
• Fits 2018-2019 GMC Sierra 3500 HD, N/A
• Fits 2018-2019 GMC Terrain, N/A
• Fits 2017 Chevrolet Silverado 2500 HD, N/A
• Fits 2017 Chevrolet Silverado 3500 HD, N/A
• Fits 2017 GMC Sierra 2500 HD, N/A
• Fits 2017 GMC Sierra 3500 HD, N/A
• Fits 2016 Buick Cascada, N/A

Common Replacement Reasons

• Check engine light related to manifold pressure sensor performance
• Rough idle or unstable engine operation
• Incorrect fuel mixture or drivability concerns
• Reduced throttle response under load
• MAP sensor fault codes during diagnostics

Installation Notes

Verify the connector style, mounting location, and calibration requirements against the original sensor before installation. Some listed applications note a seal or an air charge temperature sensor in the OE service description, so confirm the exact vehicle configuration before ordering. Use the vehicle identification number and service information to match the correct application for your Chevrolet Equinox, GMC Terrain, or Silverado HD repair.

Quality Assurance

Walker Products has supplied automotive fuel system and engine sensor components since 1946 and operates as an ISO 9001/IATF 16949 certified manufacturer. The company states that its parts are engineered to meet or exceed OEM standards and supported by manufacturing, engineering, and technical documentation resources.