buick Workshop Repair Guides

Buick Workshop Service and Repair Manuals

Vacuum Pump Relay, Brakes > < Excessive Brake Pedal Effort/VAC. Pump Inop. & Warning Light on|Page 4849
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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. 13 Vacuum pump replacement. V6-181 engine (typical)

Vacuum Pump Mounting

Vacuum Pump Relay, Brakes > < Excessive Brake Pedal Effort/VAC. Pump Inop. & Warning Light on|Page 4849