1993 Chevrolet Suburban Owner's Manual - Page 240

If No Steam Is Coming From Your C gine: If yougettheoverheatwarningbutseeorhear notbetooserious.Sometimestheenginecanget Climbalong hill ona hot day. Stop after high speeddriving. Idle forlongperiods Tow atrailer. If you get the overheat warning with orso: no steam,theproblem may a little too hotwhenyou: in traffic. no sign ofsteam, try this for a minute turn it off. 1. Ifyouhaveanairconditioner, 2. Turn on yourheater to full hotatthehighestfanspeedandopenthe window as necessary. 3. If you're in a trafficjam,shift to N (Neutral). If younolongerhavetheoverheatwarning,youcandrive.Just to besafe, driveslowerforabout ten minutes. If thewarningdoesn'tcomebackon,you candrivenormally. If thewarningcontinues, pull over,stop, and park yourvehiclerightaway. If there's still nosign of steam,pushtheacceleratoruntiltheenginespeedis about twice as fast as normalidlespeed.Bringtheenginespeedback to normal idle speedaftertwo or threeminutes. Now see if thewarningstops. OFF THEENGINEANDGET Butthen, if youstillhavethewarning,TURN EVERYONE OUT OF THEVEHICLEuntil it cools down. Youmay decidenot to lift thehoodbut to getservicehelpright away. 5-9