2003 Chevrolet Suburban Owner's Manual - Page 384
2003 Chevrolet Suburban Manual
Page 384 highlights
If Steam Is Coming From Your Engine eryone away fro the venlcle cools down. Wait until there is no sign of s ~ e a m o r coolant before you open the hood. If you keep driving when your engineis overheated, the liquids in it can catch fire. You or others could be badly burned. Stop your engine if it overheats, and get out of the vehicle until the engine is cool. See "Overheated Engine Protection Operating Mode" in the Index for information on driving to a safe place in an emergency. I Steam from an overheated engine can burn you badly, even if you just open the hood.Stay away from the engineif you see or hear steam coming from it. Just turn it off and get CAUTION: (Continued) Notice; If your engine catches fire because you keep driving with no coolant, your vehicle can be badly damaged. The costly repairs would notbe covered by your warranty.See "Overheated Engine Protection Operating Mode" in the Index for information on driving to a safe placein an emergency. 5-31