1998 Pontiac Trans Sport Owner's Manual - Page 305

Engine Overheating You will find a coolant temperature gage on your vehicle's instrument panel. See "Engine Coolant Temperature Gage'' in the Index. You also have a low coolant level light on your instrument panel. See "Low Coolant Light" in the Index. NOTICE: After driving in the overheated engine protection operating mode, to avoid engine damage, allow the engine tocool before attempting any repair. The engine oil will be sev'erely degraded. Repair the causeof coolant loss and change the oil. See '(Engine Oil, When Change" in the Index. to Overheated Engine Protection Operating Mode Should an overheated engine condition exist, an overheat protection mode which alternates firing groups of three cylinders helps prevent engine damage. In this mode, you willnotice a significant loss in power and engine performance. The low coolant light may come on and the temperaturegage will indicate an overheat condition exists.This emergency operating mode allows yourvehicle to be driven to a safe glace in an emergency. Towinga trailer in the overheat protection mode should be avoided. 5-12