1998 Chevrolet Blazer Owner's Manual - Page 245

If No Steam Is Coming FromYour Engine If you get the overheat warning but see or hear no steam, the problem may not be serious. Sometimes too the enginecan get a littletoo hot when you: Climb a long hill on a hot day. Stop after high-speed driving. Idle for long periods in traffic. 0 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 steam, push the accelerator until of the engine speed is about twice as fast as normal idle speed. Bring the engine speed backto normal idle speed after two or three minutes. Now see if the warning stops. But then, if you still have the warning,turn ofSthe engine and get everyoneout o the vehicle until it f cools down. You may decide not to lift the hood but to get service help right away. Tow a trailer. See "Driving on Grades" in the Index. If you get the overheat warning with no sign steam, of try this for aminute or so: 1. Turn off your air conditioner. 2. Turn on your heater to full hot at the highest fan speed and open the windowas necessary, 3. If you're in a traffic jam, shift to NEUTRAL (N); otherwise, shift to the highest gear while driving -- DRIVE (D) or THIRD (3) for automatic transmissions. 5-13