1998 Buick Century Owner's Manual - Page 337

Starter Switch Check - take-Transaxle Shift Interlock (BTSI) Check A CAUTION: When you are doing this check, the vehicle could move suddenly.If it does, you others could be or injured. Follow the steps below. 1. Before you start, be sureyou have enough room around the vehicle. A CAUTION: When you are doing this check, the vehicle could move suddenly.If it does, you or others could be injured. Follow the steps below. 2. Firmly apply both the parking brake (see "Parking Brake" in theIndex if necessary) and the regular brake. 1. Before you start, be sureyou have enough room around the vehicle. It should be parked on a level surface. 2. Firmly apply the parking brake (see "Parking Brake'' in the Index if necessary). NOTE: Do not use the accelerator pedal,and be ready to turn off the engineimmediately if it starts. 3. Try to start the engine in each gear. The starter should work only in PARK (P) orNEUTRAL (N). If the starter works in any other position, your vehicle needs service. NOTE: Be ready to apply the regularbrake immediately if the vehicle begins to move. 3. With the engine off, turn the key to the RUN position, but don'tstart the engine. Without applying the regular brake, try to move the shift lever outof PARK (P) with normal effort. If the shift lever moves out of PARK (P), your vehicle's BTSI needs service. 7-15