2003 GMC Safari Owner's Manual - Page 98

Starting and Operating Your Vehicle New Vehicle Break-in Notice: Your vehicle doesn't need an elaborate "break-in." But it will perform better in the long run if you follow these guidelines: Keep your speed at 55 mph (88 km/h) or less for the first 500 miles (805 km). Don't drive at any one speed - fast or slow - for the first 500 miles (805 km). Don't make full-throttle starts. a Ignition Positions With the key in the ignition, you can turn it to five different positions. C A E Avoid making hard stops for the first 200 miles (322 km) or so. During this time your new brake linings aren't yet broken in. Hard stops with new linings can mean premature wear and earlier replacement. Follow this breaking-in guideline every time you get new brake linings. Don't tow a trailer during break-in. See "Towing a Trailer" in the Index for more information. a A (ACCESSORY): This position lets you use things like the radio, power windowsand windshield wipers when the engine is off. To getinto ACCESSORY, push in the key and turn it toward you. Your steering wheel will remain locked, just as it was before you inserted the key. 2-19