1994 Buick Skylark Owner's Manual - Page 270

CHECK OR SERVICE Brake-Transaxle Shift Interlock-BTSI (Automatic Transaxle) WHAT TO DO CHECK OR SERVICE Steering Column Lock WHAT TO DO Whileparked, and withtheparking brake set, to turn the key to try "LOCK" in each shift lever position. 0 1. Before you start, be sure you 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). 3. With the engine off, turn the key to the "RUN" position, but don't start theengine.Withoutapplyingthe regular brake, try to move the shift lever out of "P" (Park) with normal effort. If the shift le'ver moves out of "P" (Park), vehicle's your BTSI needs service. Thekeyshould turn to "LOCK' only when the shift lever is in "P" (Park). Thekeyshouldcomeoutonlyin "LOCK." 0