Delphi SS21597 ABS Wheel Speed Sensor - Rear

Rear ABS Wheel Speed Sensor for Silverado and Sierra HD

Delphi SS21597 is a rear ABS wheel speed sensor built for select Chevrolet and GMC heavy-duty trucks. It uses a standard replacement design with an included wiring harness and OE-calibrated testing to help deliver accurate wheel speed readings for the ABS system.

• Rear ABS wheel speed sensor for select HD truck applications
• Standard replacement grade
• Wiring harness included
• 1 connector, square shape, black connector color
• 2 terminals, male connector and male terminal design
• Wiring harness length: 1010
• Package contents: ABS wheel speed sensor and instruction sheet

Detailed Product Information

Delphi SS21597 is an ABS wheel speed sensor for the rear position on select Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, Chevrolet Suburban 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD models. This part number is built to match the electrical and connector requirements of the original application, with a single square black connector, two terminals, and an included harness for a direct-style service replacement. Delphi tests and calibrates its sensors to OE standards to help maintain accurate signal output for the ABS control system. This part cross-references Standard Ignition ALS2652 for the same application.

Vehicle Fitment

• Fits 2015-2017 Chevrolet Silverado 2500 HD, rear.
• Fits 2015-2016 Chevrolet Silverado 3500 HD, rear.
• Fits 2016 Chevrolet Suburban 3500 HD, rear.
• Fits 2015-2017 GMC Sierra 2500 HD, rear.
• Fits 2015-2016 GMC Sierra 3500 HD, rear.

Common Issues This Part Can Address

• ABS warning light caused by a failed rear wheel speed sensor
• Erratic or missing wheel speed signal data
• ABS system faults related to rear sensor circuit issues
• Traction control or stability system warnings tied to wheel speed input
• Brake system diagnostic trouble codes linked to the rear sensor

Installation Notes and Tips

Confirm rear position and connector match before installation. Inspect the harness routing, connector terminals, and mounting points for corrosion, damage, or debris that could affect signal quality. Clear stored ABS codes after installation and verify proper system operation with a scan tool.

Quality Assurance

Delphi backs this sensor with OE-focused development and product validation methods. Each sensor is tested and calibrated to OE standards to help support accurate readings and reduce repeat repairs.