2008 Buick Enclave Owner's Manual - Page 290

If You Do Decide to Pull a Trailer If you do, here are some important points: Three important considerations have to do with weight: • There are many different laws, including speed limit restrictions, having to do with trailering. Make sure your rig will be legal, not only where you live but also where you will be driving. A good source for this information can be state or provincial police. • The weight of the trailer. • The weight of the trailer tongue. • And the total weight on your vehicle's tires. Tow/Haul Mode Tow/Haul is a feature that assists when pulling a heavy trailer or a large or heavy load. The purpose of the Tow/Haul mode is to: • Consider using a sway control. You can ask a hitch dealer/retailer about sway controls. • Do not tow a trailer at all during the first 500 miles (805 km) your new vehicle is driven. Your engine, axle or other parts could be damaged. • Reduce the frequency and improve the predictability of transmission shifts when pulling a heavy trailer or a large or heavy load. • Then, during the first 500 miles (805 km) that you tow a trailer, do not drive over 50 mph (80 km/h) and do not make starts at full throttle. This helps your engine and other parts of your vehicle wear in at the heavier loads. • Provide the same solid shift feel when pulling a heavy trailer or a large or heavy load as when the vehicle is unloaded. • Improve control of vehicle speed while requiring less throttle pedal activity when pulling a heavy trailer or a large or heavy load. • Obey speed limit restrictions when towing a trailer. Do not drive faster than the maximum posted speed for trailers, or no more than 55 mph (90 km/h), to save wear on your vehicle's parts. • Increase the charging system voltage to assist in recharging a battery installed in a trailer. • You can tow in DRIVE (D). You may want to shift the transmission to LOW (L) or, if necessary, a lower gear selection if the transmission shifts too often (e.g., under heavy loads and/or hilly conditions). See "Tow/Haul Mode" later in this section. 4-30