1999 GMC Sierra 1500 Pickup Owner's Manual - Page 240

Your Driving and the Road Power Winches If youwishtouseapowerwinchonyourvehicle,onlyuseitwhenyour vehicle NOTICE Use the regular brakes, set the parking brake or block the wheels your vehicle from rolling. to keep Power rake-off (PTO) Before using a power take-off, refer instructions. to themanufacturer'sorinstaller's To engageapowertake-off: 1. Set t h s parking brake. 2. Shiftthetransmissioninto N (Neutral). * 3. Holdtheclutchpedaldownandengagethepowertake-off. If you are going to drive the vehicle, shift the transmission into the gear (if you youwant.Thenshiftthetransfercaseintotherangeyouwant havefour-wheel-drive),applytheregularbrakesandreleasetheparking brake. 4. Releasetheclutch(andtheregularbrakes)asyounormallywould. Whenyoureleasetheclutch,thepowertake-offwillstart. 4-62