1993 GMC Suburban Owner's Manual - Page 202

Drivingonfrozenlakes,pondsorrivers can bedangerous. Underwatersprings,currentsundertheice,orsuddenthaws can weakentheice. Your vehicle could fall throughtheice and you and yourpassengers could drown.Driveyourvehicleonsafesurfaces Driwing h Water Lightraincauses no specialoff-roaddrivingproblems.Butheavy meanflashflooding, and floodwatersdemandextremecaution. rain can Find outhowdeepthewater is beforeyoudrivethrough it. If it'sdeep enoughtocoveryourwheelhubs,axles,orexhaustpipe,don'ttry it-you probably won't get through. Also, waterthatdeepcandamageyour axle and other vehicle parts. If thewaterisn'ttoodeep,thendrivethrough it slowly. At fastspeeds,water splashes on yourignitionsystem and yourvehicle can stall.Stalling can also long asyourtailpipe is occur if yougetyourtailpipeunderwater.And,as under water, you'llnever be able to startyourengine.When you go through water,rememberthatwhenyourbrakesgetwet, it maytake you longer to stop. Drivingthroughrushingwater can bedangerous.Deepwater can sweepyourvehicledownstreamand you and your passengers could drown. If it's onlyinchesdeep, it can stillwashawaytheground fromunderyourtires, and you could losetraction and roll thevehicle over. Don'tdrivethroughrushing water. Afiw Off-Road Driwing Removeanybrushordebristhathascollected on theunderbody,chassis,or underthehood.Theseaccumulations can be afirehazard. Afteroperation in mudorsand,have the brakeliningscleaned and checked. Thesesubstances can causeglazingandunevenbraking.Checkthebody structure,steering,suspension,wheels,tires, and exhaustsystemfordamage. Also, check the fuel lines and coolingsystem for anyleakage. Your vehicle will requiremorefrequent Sectlon 7 foradditionalinformation. service due to off-road use. Refer to 4-24