buick Workshop Repair Guides

Buick Workshop Service and Repair Manuals

Sensors and Switches - Brakes and Traction Control > < Excessive Brake Pedal Effort/VAC. Pump Inop. & Warning Light on|Page 3218
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Vacuum Pump: Service and Repair

    The belt-driven vacuum pump is serviced as an assembly only. Refer to Fig. when replacing the vacuum pump. On models equipped with V6-181
engine, the vacuum pump pulley must be replaced whenever the vacuum pump is removed.

Fig. 12 Vacuum pump replacement. V6-173 engine

Vacuum Pump Mounting

Sensors and Switches - Brakes and Traction Control > < Excessive Brake Pedal Effort/VAC. Pump Inop. & Warning Light on|Page 3218