1993 GMC Jimmy Owner's Manual - Page 244

Problems on the Road If No Steam Is Coming From Your Engine: I yougettheoverheatwarningbutsee f or hearnosteam,theproblemmay not be too serious.Sometimestheenginecangeta Climbalong hill on ahotday. 9 Stopafterhighspeeddriving. Idle for longperiods in traffic. Tow a trailer. If yougettheoverheatwarningwithnosignofsteam,try or so: 1. If youhaveanairconditioner,turnit little toohotwhenyou: this for a minute off. 2. Turnyourheater to fullhotatthehighestfanspeedandopenthe windowasnecessary. 3. If you're in atrafficjam,shift to N (Neutral). If younolongerhavetheoverheatwarning,youcandrive.Just to besafe, driveslower for about ten minutes. I thewarningdoesn'tcomebackon,you f can If thewarningcontinues,pullover, stop, andparkyourvehiclerightaway. If there'sstillnosign of steam,pushtheacceleratoruntiltheenginespeedis to abouttwiceas fast asnormalidlespeed.Bringtheenginespeedback normal idle speed after two or three minutes. Nowsee if thewarning stops. Butthen, if you stillhavethewarning,TURN OFF THEENGINE AND GET EVERYONEOUT OF THEVEHICLEuntil it coolsdown. Youmaydecidenot to lift thehoodbut to getservicehelprightaway. 7 4 KO715 5-1 0