1996 Chevrolet Tahoe Owner's Manual - Page 225

If No Steam Is Coming From Your Engine If you get the overheat warning but seeor hear no steam, theproblem may not be too serious. Sometimes the engine can get €ittle too when you: a hot Climb a long hill on a hot day. Stop after high-'speeddriving. Idle for long periods in traffic. Tow a trailer. See "Driving on Grades" in the Index. If you no longer have the overheat warning, you can drive. Just to be safe, drive slower for about 10 minutes. If the warning doesn't come back on, you can drive normally. If the warning continues, pull over, stop, and park your vehicle right away. If there's still no sign of steam, push the accelerator until the engine speed is abouttwice as fast as normal idle speed. Bring the engine speed back to normal idle speed after two or three minutes. Now see if the warning stops. But then, if you still have the warning, turn offthe engine and get everyoneout of the vehicle until it cools down. You may decide not to lift the hood but to get service help right away. If you get the overheat warning with no sign of steam, try this for a minute or so: 1. If you have an air conditioner, turn it off. 2. Turn on your heater to full hotat the highest fan speed and open thewindow as necessary. 3. If you're in a traffic jam, shift to NEUTRAL (N); otherwise, shift to the highest gear while driving -- AUTOMATIC OVERDRIVE (a) or DRIVE (3) for automatic transmissions. 5-10