Charge Air Cooler Pump
WARNING: This page does not describe the selected car, but rather 35 other vehicles, including the 1992 Pontiac Trans Sport, 1992 Oldsmobile Silhouette, 1992 Oldsmobile Bravada, 1992 GMC Yukon, and 1992 GMC Vandura Special. However, it is still accessible from the selected car via links, so may be relevant.
Remove charge air cooler radiator and charge air cooler pump. See REMOVAL, OVERHAUL & INSTALLATION article. Apply battery voltage and ground to charge air cooler pump electrical terminals. If pump does not activate, replace pump.