15904563 | Genuine GM® ABS Antilock Brake Actuator Pump For Chevrolet

**Description**: The ABS Anti-lock Brake Actuator Pump **15904563** is a key component of a vehicle’s Anti-lock Braking System (ABS). It is sometimes integrated with the ABS Pressure Modulator Valve (BPMV) and is responsible for maintaining hydraulic pressure in the brake system during ABS operation. **Part Number:** 15904563 **Condition**: Remanufactured **Manufacture/Brand**: GM **Fits 15904563** For Year Make ModelEngineImportant vehicle option details2003-2007 Chevrolet Express6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.6L Diesel1/2 TON CARGO EXPRESS, 1/2 TON PASSENGER EXPRESS, 3/4 TON CARGO EXPRESS, 3/4 TON PASSENGER EXPRESS2003-2006 Chevrolet Silverado6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L1500 EXTENDED CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB2003-2004 Chevrolet Suburban8 Cyl 6.0L, 8 Cyl 8.1L1500 EXTENDED CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB2003-2007 GMC Savana6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.6L Diesel1/2 TON CARGO SAVANA, 1/2 TON PASSENGER SAVANA, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER SAVANA2003-2006 GMC Sierra6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L1500 EXTENDED CAB STANDARD BOX, **Purpose of using 15904563:** - **Restore Brake Pressure** - When the ABS modulator reduces pressure to a wheel that’s locking, the actuator pump **re-pressurizes the brake fluid** so braking can continue effectively. - **Maintain Continuous ABS Operation** - During rapid ABS pulses, fluid is constantly released and re-pressurized. The pump ensures that **pressure is available at all times**. - **Work with Hydraulic Modulator** - The pump is part of the **hydraulic control unit (HCU)** that opens/closes solenoid valves to adjust pressure to each wheel. **Sings of Bad ABS Actuator Pump 15904563:** ABS warning light stays on Brakes lock up during hard stops Pump motor runs continuously or not at all Brake pedal feels unusually soft or pulsates ABS codes stored in the system (C-codes, e.g., C0271, C0272, C1251)

• Items Included: ABS Pump
• Brand: GM
• Manufacturer Warranty: 1 Year
• Manufacturer Part Number: 15904563
• Country of Origin: United States