Walker 235-91187 Engine Camshaft Position Sensor

Camshaft Position Sensor for GM Applications

Walker 235-91187 is an engine camshaft position sensor built for direct-fit service on a wide range of GM vehicles. It monitors camshaft position and speed so the engine control module can maintain accurate valve timing and fuel injection control for smoother operation.

Compatible With Buick Enclave, Chevrolet Impala, Chevrolet Traverse, Cadillac ATS, Cadillac CTS, and other listed applications, this sensor supports precise engine management across 2010-2020 model years.

Key Features

• Engine camshaft position sensor for ignition and engine management systems
• 3-terminal blade connection with oblong male connector
• Female and male terminal design for secure electrical contact
• Mounting bracket included for application-specific installation
• Uses Hall Effect or magnetic induction sensing technology, depending on application
• Walker Full Service Kit line for service-focused replacement parts

Product Details

Walker Products 235-91187 is engineered to provide accurate camshaft position feedback to the ECM, helping the engine maintain proper synchronization between valve operation and fuel delivery. That precision can support stable idle quality, consistent throttle response, fuel efficiency, and lower emissions when the original sensor is worn or failing. The Full Service Kit line is aimed at complete service replacement needs, and this part number is listed for multiple GM platforms including Buick Enclave, Chevrolet Traverse, and Cadillac CTS.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems This Sensor May Address

• Hard starting or extended crank time
• Rough idle or unstable engine speed
• Check engine light related to camshaft position signal faults
• Intermittent stalling or hesitation during acceleration
• Poor fuel control caused by inaccurate camshaft timing input

Installation Notes and Tips

Verify connector shape, terminal count, and mounting location before installation. This sensor uses a 3-terminal blade-style connection with an oblong male connector and includes a mounting bracket. Confirm the vehicle application against the listed fitment before service, especially on 2010-2020 Buick, Chevrolet, Cadillac, GMC, Saturn, and Saab models.

Fits 2011-2020 Buick Enclave, N/A; Fits 2012-2020 Chevrolet Impala, N/A; Fits 2011-2020 Chevrolet Traverse, N/A; Fits 2013-2019 Cadillac ATS, N/A; Fits 2011-2019 Cadillac CTS, N/A; Fits 2013-2019 Cadillac XTS, N/A; Fits 2012-2017 Chevrolet Caprice, N/A; Fits 2010-2017 Chevrolet Equinox, N/A; Fits 2017 GMC Acadia Limited, N/A; Fits 2010-2017 GMC Terrain, N/A; Fits 2010-2016 Buick LaCrosse, N/A; Fits 2010-2016 Cadillac SRX, N/A; Fits 2015-2016 Chevrolet Colorado, N/A; Fits 2013 Chevrolet Colorado, N/A; Fits 2014-2016 Chevrolet Impala Limited, N/A; Fits 2011-2016 GMC Acadia, N/A; Fits 2015-2016 GMC Canyon, N/A; Fits 2010-2015 Chevrolet Camaro, N/A; Fits 2011-2015 Chevrolet Captiva Sport, N/A; Fits 2010-2012 Chevrolet Malibu, N/A; Fits 2010-2011 Cadillac STS, N/A; Fits 2010-2011 Saab 9-5, N/A; Fits 2010 Buick Allure, N/A; Fits 2010 Saturn Outlook, N/A; Fits 2010 Saturn Vue, N/A.

Quality Assurance

Walker Products manufactures this camshaft position sensor as part of its Full Service Kit line, with a focus on accurate signal output and durable service in demanding engine environments. Part number 235-91187 is specified for direct replacement use on the listed applications.