1993 GMC Sonoma Owner's Manual - Page 204

Your Driving and the Road .i P J AM470024 If thereisnocurbwhenyou'reparkinguphill,turnthewheelstotheright. If there is no curbwhenyou'reparkinguphillontheleftside street,yourwheelsshouldbeturned to theleft. of a one-way Torque Lock (Automatic Transmission) If youareparkingona hill andyoudon'tshiftyourtransmissioninto P (Park)properly,theweight of thevehiclemayputtoomuchforceonthe parkingpawl in thetransmission. You may find it difficult to pulltheshiftlever out of P (Park).Thisiscalledtorquelock. To preventtorquelock,always be sure to shiftinto P (Park)beforeyouleavethedriver'sseat. To findout how, see"Shifting Into P (Park) in theIndex." When you areready to drive,movetheshiftleverout youreleasetheparkingbrake. of P (Park) BEFORE If "torque lock" does occur,youmayneed to haveanothervehiclepush yours a little uphill to takesome of thepressurefromthetransmission, youcanpulltheshiftleverout of P (Park). so 4-50