OEM 2004 Cadillac DeVille Brake Booster

2004 Cadillac DeVille Brake Booster Parts and Q&A

• Q: How to replace the hydraulic brake booster on 2004 Cadillac DeVille?

  A: Begin Brake Booster replacement by protecting yourself using a negative Battery Cable disconnect and blocking the front wheels while applying the parking brake. Remove the power steering inlet hose together with the pressure hose and the power steering gear to booster hose. The booster assembly requires removal of its master cylinder together with the wiring harness bracket along with the spacer component. Remove the left closeout insulator panel with both the left knee bolster and knee bolster bracket. Before proceeding with the Brake Booster vacuum removal you must first disconnect and take out the vacuum Brake Booster retainer clip and foam spacer that secure the Brake Pedal clevis pin and then separate the vacuum Brake Booster push rod from the clevis pin before fully removing the vacuum Brake Booster assembly by taking off its mounting nuts . You should consider replacing the vacuum Brake Booster mounting gasket only when needed. Installation begins with mounting the booster gasket to its place followed by attaching the vacuum Brake Booster assembly while tightening the stud mounting nuts of the Brake Pedal assembly to 36 nm torque. Apply gm p/n 12346293 lubricant or equivalent on the Brake Pedal clevis pin. Then couple the pushrod of the vacuum Brake Booster to the Brake Pedal assembly clevis pin before installing both spacer foam and retaining clip. The installation order is left knee bolster bracket followed by left knee bolster then left closeout insulator panel. The sequence continues with the booster spacer along with the wiring harness bracket. After integrating the master cylinder with the booster assembly you should install the power steering pressure hose and power steering gear to booster hose and power steering inlet hose. To finish, put back the negative Battery Cable while performing a hydraulic booster system bleed followed by wheel block and parking brake release procedures.