Turn brake-pedal effort into the hydraulic pressure that operates your truck's brakes with the Dorman - First Stop Brake Master Cylinder M630031. It installs as a direct-fit replacement for the listed applications, including the 1999-2002 Chevrolet Silverado 1500, 1999-2002 GMC Sierra 1500, 2000-2002 Chevrolet Tahoe, and 2002 Cadillac Escalade. If a failing master cylinder is the cause of a sinking or spongy pedal, this unit replaces it.
- Hydraulic pressure source: converts the force you apply at the brake pedal into hydraulic pressure sent to the brake circuits.
- Signs it may need replacing: a pedal that slowly sinks under steady foot pressure, a soft or spongy pedal, or unexplained brake-fluid loss can indicate a worn master cylinder—diagnose the cause before replacing, since other brake components can cause similar symptoms.
- Direct-fit application: designed to replace the original master cylinder on the listed year, make, and model vehicles.
Interchange: 174-1003 · 1741003 · M901215 · M901239 · 100-2630 · 1002630 · M-86038 · M86038 · 13570 · 13-2881 · 132881 · 10-2881 · 102881 · 130.66041 · 131.66041 · MC500150 · MC500320 · 355-47168 · 35547168 · 18040252 · 18048538 · 18060789 · 19209249 · M3089 · NM3089 · MC390541 · F131468 · F140673 · MC140673
Manufacturer part number M630031.
Fitment: 1999-2002 Chevrolet Silverado 1500; 1999-2002 GMC Sierra 1500; 2000-2002 Chevrolet Blazer; 2000-2002 Chevrolet Suburban 1500; 2000-2002 Chevrolet Tahoe; 2000-2002 GMC Yukon; 2000-2002 GMC Yukon XL 1500; 2001-2002 Chevrolet Silverado 1500 HD; 2001-2002 GMC Sierra 1500 HD; 2001-2002 GMC Yukon XL 2500; 2002 Cadillac Escalade; 2002 Cadillac Escalade EXT; 2002 Chevrolet Avalanche 1500. See the Buyer's Guide tab for the full list.
This part cross-references / interchanges with the following part numbers:
174-1003, M901215, M901239, 100-2630, M-86038, 13570, 13-2881, 10-2881, 130.66041, 131.66041, MC500150, MC500320, 355-47168, 18040252, 18048538, 18060789, 19209249, M3089, NM3089, MC390541, F131468, F140673, MC140673
