Standard Ignition PWS378 Disc Brake Pad Wear Sensor - Front

Disc Brake Pad Wear Sensor for Front Brake Calipers

Standard Ignition PWS378 is a disc brake pad wear sensor for the front brake caliper. It is built with a female oval connector, male blade terminals, and a direct sensor function for vehicles that use an electronic pad wear warning system.

Compatible with 2020-2026 GMC Sierra 2500 HD front and 2020-2025 Chevrolet Silverado 2500 HD front, Chevrolet Silverado 3500 HD front, and GMC Sierra 3500 HD front applications, this sensor supports accurate brake pad wear monitoring on heavy-duty trucks.

Key Features

• Disc brake pad wear sensor for front brake caliper mounting
• Female oval connector with 1 connector interface
• 2 male blade terminals for vehicle-side connection
• Direct sensor function for brake wear monitoring systems
• Fits GMC Sierra 2500 HD, Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, and GMC Sierra 3500 HD front brake applications
• Standard Ignition PWS378 cross-references to OE-style replacement part numbers 84166982 and WS578 for the same application

Detailed Description

Standard Ignition PWS378 is a front disc brake pad wear sensor designed for brake caliper mounting on select Chevrolet and GMC heavy-duty trucks. The oval female connector and blade-style male terminals support the factory-style electrical interface used by pad wear warning systems. If your truck uses a front brake wear sensor, this part number provides a direct replacement path for service on the Silverado 2500 HD, Silverado 3500 HD, Sierra 2500 HD, and Sierra 3500 HD.

Use PWS378 when servicing front brake components on 2020-2026 GMC Sierra 2500 HD and 2020-2025 Chevrolet Silverado 2500 HD, Silverado 3500 HD, and GMC Sierra 3500 HD models. Standard Ignition PWS378 is a practical match for vehicles that require a brake pad wear sensor at the caliper to monitor pad condition through the vehicle warning system.

What It Helps Solve

• Brake pad wear warning light staying on after pad service
• Faulty or damaged front brake wear sensor wiring
• Intermittent pad wear warning messages from a worn sensor
• Loss of brake pad wear monitoring on the front axle
• Replacement needs after front brake caliper service

Installation Notes and Tips

Install the sensor at the front brake caliper and verify the connector shape and terminal style match the vehicle harness before installation. Inspect the surrounding brake wiring, clips, and caliper area for damage or contamination during brake service. Confirm the vehicle application by year, make, model, and front position before ordering or installation.

Quality Assurance

Standard Ignition is a recognized aftermarket source for electrical and sensor components, and PWS378 is built to match the specified connector and terminal configuration for the listed applications.