1998 Buick LeSabre Owner's Manual - Page 344

Ignition Transaxle Lock Check While parked, and with the parking brake set, try to turn the ignition key to LOCKin each shift lever position. The key should turn to LOCK only when the shift lever is in PARK (P). 0 Park on a fairly steep hill, with the vehicle facing downhill. Keeping your foot on the regular brake, set the parking brake. 0 The key should come out only in LOCK. Parking Brakeand Automatic Transaxle PARK (P) Mechanism Check To check the parking brake's holding ability: With the engine running and transaxle in NEUTRAL (N), slowly remove foot pressure from the regular brake pedal. Do this until the vehicle is held by the parking brake only. To check the PARK (P) mechanism's holding ability: With the engine running, shift to PARK (P). Then release all brakes. A CAUTION: When you are aomg tms check, your vehicle could beginto move. You or others could be injured and property could damaged. Make be sure thereis roomin front of your vehicle in case it begins to roll. Be ready to apply the regular brake at once should the vehicle begin to move. Underbody Flushing Service At least every spring, use plain water to flush any corrosive materials from theunderbody. Take care to clean thoroughly any areas where mud and other debris can collect. 7-32