1995 GMC Yukon Owner's Manual - Page 228

If You Do Decide To Pull A Trailer If you do, here are some important points. 0 There are many different laws, including speed limit restrictions, having to dowith trailering. Make sure your rig will be legal, not only where you live but also where you'll be driving. A good source for this information can be state or provincial police. Consider using a sway control if your trailer will weigh 3,000 pounds (1 362 kg) or less for a utility vehicle or, for a Suburban, 4,000 pounds (1 800 kg) or less. You should always use a sway control if your trailer will weigh more than 3,000 pounds (1 362 kg) for a utility vehicle or 4,000 pounds (1 800 kg) for a Suburban. You can ask a hitch dealer about sway controls. Don't tow a trailer at all during the first 500 miles (800 km) your new vehicle is driven. Your engine, axleor other parts could be damaged. Then, during the first 500 miles (800 km) that you tow a trailer, don't drive over50 mph (80 k d h ) and don't make starts at full throttle. This helps your engine and other parts of your vehicle wear in at the heavier loads. If you have an automatic transmission, you should use DRIVE (3) (or, as you need to, a lower gear) when towing a trailer. Operating your vehicle in DRIVE (3) when towing a trailer will minimize heat build-up and extend the life of your transmission. If you have a manual transmission and you are towing a trailer, it's better notto use FIFTH (5) gear. Just drive in FOURTH (4) gear (or, as you need to, a lower gear). 4-40