1993 GMC Sonoma Owner's Manual - Page 74

Features & Controls To release fhe parking brake: Hold theregularbrakepedaldown.Pullthebrakereleaselever. You may have tc ,zplace them, and you could also damage other your vehicle. If you are on a hill: See"Parkingon wheels. parts Hills" intheIndex.Thatpartshowshow to turnyourfront If you are towing a trailerand are parkingonany See "Towing aTrailer" in theIndex.Thatpartshowswhat thetrailerfrommoving. hill: to do first to keep Torque Lock The parkingbrakeshouldbesetfirstwheneverleavingthedriver'sseat. It you areparked on a hill andthetransmissionisplaced in P (Park)before theparkingbrakeisset,theweight ofthevehiclemay put too muchforce ontheparkingpawl in thetransmission.Itmay be difficult to pulltheselector leverout of P (Park).Thisiscalled"torquelock." To preventthis,theparking brakeshouldbesetBEFOREmovingtheselectorleverto P (Park). Whenpreparing to movethevehicle,theselectorlevershouldbe moved out of P (Park)BEFOREreleasingtheparkingbrake.Settheparkingbrakefirst, Then releasethetransmissionfrom P (Park),evenonlevelsurfaces. If"torque lock" doesoccur,youmayneed to haveanothervehicle nudge this vehicleuphill to takesome of thepressure off thetransmissionwhileyoupull theselectorleverout of P (Park). 2-22