1993 Pontiac Firebird Owner's Manual - Page 296

AtLeast Once a Year (cant.) I CHECK OR SERVICE WHAT TO DO CAUTION: Brake Transmission Shift Interlock-BTSI When you are doing this check, the vehicle could move suddenly. If it does, you 1 . Before you start, be sure you have enough room arouna me venicle. It should be parked on I a level surface. 2. Firmly apply the parking brake (see "Parking Brake" in the Index if necessary). NOTE: Be ready to apply the regular brake immediately if the vehicle begins to move. 3. With the engine off, turn the key to the Run position, but don't start the engine. Without applying the regular brake, try to move the shift lever out of P (Park) with normal effort. If the shift lever moves out of P (Park), your vehicle's BTSI needs service. ~~ ~~ Steering Column Lock While parked, and with the parking brake set, try to turn the key to LOCK in each shift lever position. With an automatic transmission, the key should turn to LOCK only when the shift lever is in P (Park). With a manual transmission, the key should turn to LOCK only when you press the key release button. On vehicles with a key release button, try to turn the key to LOCK without pressing the button. The key should turn to LOCK only with the key button depressed. On all vehicles, the key should come out only in LOCK. 295 9 9