Power Brake Booster. 2004 - 1998 Chevrolet S10 2.2L, 4.3L. ►Brake Booster Diaphragm Style：Dual. 2005 - 1998 Chevrolet Blazer 4.3L. Brake Master Cylinder. Brake Caliper. A4: After replacing a brake booster, it may be necessary to adjust the brake light switch.
