1993 GMC Suburban Owner's Manual - Page 75

Your modern vehicle doesn't need 'an elaborate %reak-in." But it will perform bettei in the long run if you follow these guidelines: * Keep your speed at 55 mph (88 km/h) or less for the first SO0 miles (804 km). * Don't drive at any one speed-fast or S'law-for (804 km). Don't make full-thruttle starts. the first 500 miles * Avoid making hard stops for the first 200 miles (322 km) orso. During this fime your n0w brake liningsaren't yet broken in.. Hard stopswithnew linings can mean premature wear and earlier replacement. Fotlow this "breaking-in"guideline every the you get new brake linings. Useyoursquarekeyto start yourvehicle.Thesquarekeyletsyouturnthe ignitionswitchtofivedifferentpositions: KO404 Acc (Accessory): Ace letsyouusethingsliketheradioandthewindshield wiperswhentheengine is off. To getinto Acc, push in thekeyandturn it towardyou. Your steeringwheelwillremain locked, just as itwasbeforeyou insertedthe key. 2 11