1998 Chevrolet Corvette Owner's Manual - Page 333

Ignition Automatic Transmission Lock Check While parked, and with the parking brake set, try to turn the ignition key to OFF in each shift lever position. The key should turn to OFF only when the shift lever is in PARK (P). On all vehicles, the key should come out only in OFF. Parking Brake and Automatic Transmission PARK (P) Mechanism Check Park on a fairly steep hill, with the vehicle facing downhill. Keeping your foot on the regular brake, set the parking brake. 0 To check the parking brake's holding ability: With the engine running and transmission in NEUTRAL (N), slowly removefoot 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. Underbody FlushingService When you are doing this check, your vehicle could begin to move. You or others could be injured and property could be damaged. Make sure thereis room in frontof your vehicle in case it begins toroll. Be ready to apply the regular brake at once should thevehicle beginto move. At least every spring, use plain water to flush any corrosive materials from the underbody. Takecare to clean thoroughly any areas where mud other debris and can collect.