1995 GMC Safari Owner's Manual - Page 205

And don't mix your compact spare or wheel with other wheels or tires. They won't fit. Keep your spare and its wheel together. NOTICE: Tire chains won't fit your compact spare. Using them will damage your vehicle and destroy the chains too. Don't usetire chains on your compact spare. If You're Stuck:In Sand, Mud, Ice or Snow What you don't want todo when your vehicle is stuck is to spin your wheels too fast. Themethod known as "rocking" can help you get out when you're stuck, but you must usecaution. NOTICE: Spinning your wheels can destroy parts of your vehicle as well as the tires. If you spin the wheels toofast while shifting your transmission back and forth,you can destroy your transmission. For information about using tire chains on your vehicle, see "Tire Chains'' in the Index. Rocking your vehicle to get out: it First, turn your steering wheel left and right. That will clear the area around your front wheels. Then shift back and forth between REVERSE (R) and a forward gear, spinning the wheels as little as possible. Release the accelerator pedal while you shift, and press lightly on the accelerator pedal when the transmission is in gear. If that doesn't get you after a few tries, out you may need to be towed out. If you do need to be towed out, see"Towing Your Vehicle" in the Index. 5-35