1993 GMC Sonoma Owner's Manual - Page 73

I CAUTION A If youskipmorethanonegearwhenyoudownshift,youcouldlose control of yourvehicle. And youcouldinjureyourselforothers. If youskip more than one gear when you downshift, or if yourace th enginewhenyoudownshift, you candamagetheclutch or transmission. I N O TC l E Locking Rear Axle If youhave this feature,yourrearaxlecangiveyouadditionaltractionon snow,mud,ice,sandorgravel. It workslikeastandardaxlemost of the time,butoneoftherearwheels has notractionandtheotherdoes,the lockingfeaturewillallow the wheelwithtraction to movethevehicle. Parking Brake KO424 To set the parking brake: Holdtheregularbrakepedal down withyourright foot. Pushdownthe parkingbrake pedal withyourleftfoot. If theignition is on,thebrakesystem warninglightwillcomeon. 2-21