1998 GMC Safari Owner's Manual - Page 253

Getting under a vehicle whenit is jacked up is dangerous. If the vehicle slips off the jack, you could be badly injured or killed. Never get under a vehicle whenit is supported only bya jack. U Raising your vehicle with jack improperly the positioned can damage the vehicle and even make the vehicle fall.To help avoidpersonal injury and vehicle damage, be sure to fitthe jack lift headinto the proper location before raising the vehicle. 7. Raise the vehicle by rotating the ratchet toward the right. Make sure the mark facesyou. Raise the UP vehicle far enough off the ground so there is enough room for the spare tire to fit. 8. Remove all the wheel nuts and take the flat tire. off 5-31