Removal & Installation (Except S-10 & FWD "U" Van)

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 1999 Pontiac Montana, 1999 Oldsmobile Silhouette, 1999 Oldsmobile Bravada, 1999 GMC Yukon, and 1999 GMC Suburban. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For Hydro-Boost removal and installation. See POWER BRAKE BOOSTER - BENDIX HYDRO-BOOST article. .

Remove master cylinder. See MASTER CYLINDER . Ensure no brake fluid contacts ABS control unit or related electrical connectors and wiring.
Disconnect vacuum hose from booster. Disconnect booster push rod from brake pedal. Remove booster mounting nuts from inside vehicle. Remove booster and gasket.
To install, reverse removal procedure. On Savana and Express, tighten booster retaining nuts to specification in a cross pattern using following procedure. Tighten right lower, left upper, left lower and then right upper retaining nut. Bleed brake system if lines were disconnected from master cylinder. See MANUAL BLEEDING or PRESSURE BLEEDING under BLEEDING BRAKE SYSTEM.