1994 GMC Safari Owner's Manual - Page 211

NOTICE: Raising your vehicle with the jack improperly positioned will damage the vehicle may allow the vehicle to fall off the or jack. Be sureto fit the jack lift head into the proper location before raising your vehicle. Raise the vehicle by rotating the ratchet to the right. Make sure the UP marking faces you. Raise the vehicle far enough off the ground so there is enough room for the spare tire to fit. Remove all the wheel nuts. 5-27