1997 Buick Riviera Owner's Manual - Page 355

Park on a fairly steep hill, with the vehicle facing set While parked, and with the parking brake set, try to turn downhill. Keeping your foot on the regular brake, the parking brake. the ignition keyto LOCK in each shift lever position. To check the parking brake's holding ability: With The key should turn to LOCK only when the shift NEUTRAL (N), the engine running and transaxle in lever is i PARK (P). n slowly removefoot pressure from the regular brake The key should come out only in LOCK. pedal. Do this until the vehicle is held by the parking brake only. Parking Brake and Automatic Transaxle PARK (P) 0 To check the PARK (P) mechanism's holding ability: N - -:hanism I3eck (P). With the engine running, shift to PARK Then release all brakes. I Ignition Transaxle Lock Check When youare doing this check, your vehicle could beginto move. You or others could be injured and property could be damaged. Make sure there room in front your vehicle in case is of it begins to roll. Be ready to appIy the regular brake at once shouldthe vehicle beginto move. Underbody Flushing Service At least every spring, use plain water to flush any corrosive materials from the underbody. Take to care clean thoroughly any areas where mud and other debris can collect. 7-42