Walker 235-91157 Engine Crankshaft Position Sensor

Engine Crankshaft Position Sensor Overview

Walker Products FSK 235-91157 is an engine crankshaft position sensor built for direct replacement service on select GM trucks and SUVs. It uses a black housing, one male connector, one mounting hole, and an included mounting bracket for a clean OE-style installation.

Compatible With 2001-2007 Chevrolet Silverado, GMC Sierra, Chevrolet Avalanche, Chevrolet Suburban, GMC Yukon XL, Chevrolet Express, and GMC Savana applications listed below, this sensor supports accurate crankshaft signal input for proper engine management. Part number 235-91157 is also a fitment-based replacement for several common OE cross-references.

Walker Products FSK Details

• Brand: Walker Products FSK
• Part number: 235-91157
• Category: Ignition sensor
• Engine crankshaft position sensor for signal timing and engine control
• Black finish with 1 connector and 1 mounting hole
• Male connector design
• Mounting bracket included
• Walker Products has supplied fuel system and engine management components since 1946
• Manufactured to meet or exceed OEM standards and specifications
• ISO 9001/IATF16949 certified manufacturing environment

Product Line Information

Walker Products FSK focuses on engine management and fuel system components, including cam and crankshaft sensors, oxygen sensors, throttle position sensors, fuel injectors, spark plug wires, gaskets, and repair kits. That product-line focus supports accurate cataloging and OE-style replacement selection for service work on GM applications such as the Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, and Sierra 3500.

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 2002-2006 Chevrolet Avalanche 2500, N/A
• Fits 2001-2006 Chevrolet Silverado 2500 HD, N/A
• Fits 2001-2006 Chevrolet Silverado 3500, N/A
• Fits 2001-2006 Chevrolet Suburban 2500, N/A
• Fits 2001-2006 GMC Sierra 2500 HD, N/A
• Fits 2001-2006 GMC Sierra 3500, N/A
• Fits 2001-2006 GMC Yukon XL 2500, N/A
• Fits 2001-2002 Chevrolet Express 3500, N/A
• Fits 2001-2002 GMC Savana 3500, N/A

What This Sensor Helps Address

• Crankshaft position signal loss or erratic signal output
• Hard starting or extended crank conditions
• Intermittent stalling or engine cut-out concerns
• Misfire-related drivability complaints tied to crank signal issues
• Check engine light faults related to crankshaft position sensor performance

Installation Notes and Tips

Verify the connector style, mounting hole location, and application before installation. Clean the mounting surface, inspect the harness connector for corrosion or damaged terminals, and confirm the sensor seats fully with the included bracket in place. After installation, clear diagnostic trouble codes and confirm stable engine operation.

Quality Assurance

Walker Products backs this sensor with manufacturing, engineering, and product support resources focused on accurate vehicle applications and OE-level specifications. The company’s ISO 9001/IATF16949 certified processes support consistent production quality for service replacement parts.

This part cross-references Standard Ignition PC269 for the same application.