1993 GMC Suburban Owner's Manual - Page 94

It can be dangerous to getoutofyourvehicle if the shift lever is not fullyin B (Park)withtheparkingbrakefirmlyset. If youhave four-wheeldrive,alsobesurethetransfercaseisin a drivegear. Your vehicle can roll. If you. have left the engine running, the vehicle canmovesuddenly.Youorothers could be injured. To be sureyour If youareparkingona vehiclewon'tmove,followthestepsbelow. hill, or if you're pullingatrailer,see"Parking on Hills" or"Trailer Towing" intheIndex. If yourvehiclehasfour-wheeldrive,youcansendyourengine'sdrivingpower To getthe most satisfaction out of toallfourwheelsforextratraction. four-wheeldrive, you mustbefamiliarwithitsoperation.Readthepartthat W followsbeforeusingfour-wheeldrive. You shoulduse 2 for most normal drivingconditions. Driving i the 4H QT 4h positions for a long time on dry CYwet pavement n coi~ldshorten the life d your vehicie's drivetrain. I PO276 2-30