1995 Cadillac DeVille Owner's Manual - Page 235

Engine Cooling When Trailering Your cooling system may temporarily overheat during severe operating conditions such as: e Climbing grades steeper than 4% at ambient temperatures above 90' F (32" C) with a loaded vehicle and trailer. Stopping after high-speed driving. e Idling for long periods in stop and gotraffic. If the ENGINE HOT-A/C COMPRESSOR OFF message appears on the Driver Information Center, d o no be alarmed. Thisis a normal function designed to reduce the load on the engine and cooling system. You can continue to drive your vehicle. if the ENGINE COOLANT HOT-IDLE ENGINE message appears on the Driver Information Center, pull off to the side of the road as soon as it is safe to do so. When the vehicle is at a complete stop, shift the transaxle selector to PARK (P) and allow the engine to idle. Do not turn off the engine or increase engine speed abovea normal idle. After several minutes resume driving at a reduced speed. Return to normal driving after 10 minutes if the ENGINE COOLANT HOT-IDLE ENGINE message is not displayed. 4-42