STEERING COLUMN 1998 Pontiac Bonneville1998-99 STEERINGSteering Columns - Cars - All OthersGMBonneville, Camaro, Corvette, DeVille, Eighty Eight,Eldorado, Firebird, LeSabre, LSS, Park Avenue, Regency, SevilleMODEL IDENTIFICATIONMODEL IDENTIFICATION - CARS Body Code (1)"C""E""F""H""K""Y"Model. Park Avenue. Eldorado. Camaro & Firebird. Bonneville, Eighty Eight, LeSabre, LSS & Regency. ( 2) DeVille & Seville. Corvette(1) - Vehicle body code is fourth character of VIN.(2) - Includes Concours and D’Elegance. DESCRIPTION & OPERATION* PLEASE READ THIS FIRST *Steering columns are designated as fixed or tilt column, andas column shift or floor shift. Column shift and floor shift columnsare basically the same, except for the shift tube on column shiftsteering columns.Steering column components are designed to collapse ifimpacted during a collision. Steering shaft, column jacket and shifttube (column shift) are 2-piece units injected with plastic to holdthe 2 pieces together as one unit. If column and/or steering wheel areimpacted, the injected plastic will shear, allowing the columnassembly to collapse.BRAKE/TRANSMISSION SHIFT INTERLOCK (BTSI) SYSTEMThis system does not allow shift lever to be moved out ofPark unless brake pedal is pressed. With brake pedal released andignition on, current flows through BTSI solenoid to ground, energizingsolenoid. With solenoid energized, a lock pawl protrudes fromsolenoid, preventing shift lever from being moved.With brake pedal pressed, current flows through stoplightswitch to ground side of solenoid. Under this condition, batteryvoltage is available on positive and negative sides of solenoid. Thiscauses solenoid to de-energize, releasing lock pawl.COLUMN COLLAPSE FEATURESteering column is designed to collapse if impacted during acollision. Steering shaft and column jacket are both 2-piece unitswhich are internally injected with plastic. Plastic protrudes fromholes in each unit keeping 2 separate pieces held together as oneunit. See Fig. 17. If the column or steering wheel is forcefully

impacted, plastic pieces break off, allowing column and shaft tocollapse.PARK LOCK CABLE SYSTEM (A/T)A park lock cable system prevents shift lever from beingmoved out of Park position unless ignition lock cylinder is out ofLOCK position. It also prevents the lock cylinder from being turned toLOCK position unless shift lever is in Park position. This isaccomplished by a park lock cable connected between lock cylinder andshift lever.STEERING WHEEL ROTATION SENSORThe steering wheel rotation sensor, on vehicles equipped withvariable effort steering, senses rotation speed of the steering wheelassembly. This information provides more assist during suddendirectional changes at highway speeds.WARNING: All vehicles are equipped with air bag. See SERVICEPRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM beforeattempting any repairs to steering column or components.SERVICE PRECAUTIONSsystem:*******Observe the following precautions when servicing air bagDisable air bag system before attempting any repairs tosteering column or components. See DISABLING & ACTIVATING AIRBAG SYSTEM.After disabling air bag system, Diagnostic Energy ReserveModule (DERM) retains back-up voltage for about 10 minutes.To avoid accidental air bag deployment, wait at least 10minutes after disabling air bag system before working onvehicle components.Always wear safety glasses when working around air bagsystem.Always carry a live (undeployed) air bag with trim coverfacing away from your body. This minimizes the chance ofinjury if air bag accidentally deploys.Place a live (undeployed) air bag on a bench or other surfacewith trim cover facing up, away from surface. This willreduce motion of air bag if it accidentally deploys.Never probe air bag inflator module connectors. Air bag mayaccidentally deploy.Never attempt repair of any air bag system components.Replace any faulty components as required.DISABLING & ACTIVATING AIR BAG SYSTEMWARNING: Supplemental Inflatable Restraint (SIR) Diagnostic EnergyReserve Module (DERM) retains back-up voltage for about 10minutes after disabling SIR system. Wait a minimum of 10minutes after disabling SIR before servicing steering columncomponents. Servicing steering column components before 10minute period may cause accidental deployment of air bag andpossible personal injury.1) Before proceeding, follow air bag service precautions. SeeSERVICE PRECAUTIONS. To disable air bag, with wheels in straight-ahead

position, turn ignition switch to OFF-LOCK position and remove key.Remove SIR fuse (air bag fuse) from fuse block.2) Remove left sound insulator. Remove Connector PositionAssurance (CPA) clip from Yellow SIR harness connector at base ofsteering column. All SIR system connectors use CPA clips to ensureconnector retention. Disconnect Yellow SIR connector. Wait at least 10minutes before working on vehicle.3) With SIR fuse removed and ignition on, AIR BAG indicatorlight will be on. This is normal operation for SIR system and does notindicate a fault code or system problem.4) To activate air bag system, ensure ignition is off.Connect Yellow SIR connector and CPA clip at base of steering column.Install SIR fuse. Turn ignition switch to RUN position. Observe AIRBAG indicator light. Light should flash 7-9 times and then go out. IfAIR BAG indicator light does not function as described, a malfunctionin air bag system exists.ADJUSTMENTS* PLEASE READ THIS FIRST *CAUTION: When battery is disconnected, vehicle computer and memorysystems may lose memory data. Driveability problems may existuntil computer systems have completed a relearn cycle. SeeCOMPUTER RELEARN PROCEDURES article in GENERAL INFORMATIONbefore disconnecting battery.NOTE:For aid in adjustments, see exploded views of columnassemblies. See Figs. 19-25.BTSI & PARK LOCK SYSTEMSystem Check1) Place shift lever in Park. Turn lock cylinder to OFF-LOCKposition. Remove key. If lock cylinder cannot be turned to OFF-LOCKposition or key cannot be removed, perform appropriate adjustmentprocedure.2) With lock cylinder in OFF-LOCK position, try to move shiftlever out of Park. If shift lever can be moved out of Park, performappropriate adjustment procedure.3) Turn lock cylinder to RUN position. Try to move shiftlever out of Park. If shift lever can be moved out of Park, performappropriate adjustment procedure. Depress brake pedal, move shiftlever out of Park. If shift lever cannot be moved out of Park, performappropriate adjustment procedure.4) Try to turn lock cylinder to OFF-LOCK position. Ignitionswitch should stop turning before reaching the OFF-LOCK position, andthe key should not be able to be removed. If system does not operateas specified, perform appropriate adjustment procedure.5) With key in same position as in previous step (just beforeOFF-LOCK position), place shift lever in Park. Turn lock cylindertoward RUN position, and then to OFF-LOCK position. Remove key. Ifsystem does not operate as specified, perform appropriate adjustmentprocedure.Adjustment (Column Shift "C" & "H" Bodies)1) Turn lock cylinder to OFF position (not LOCK position).Place shift lever in Neutral. Unlock shift cable adjuster at transaxleend of shift cable (pull button up) to release cable tension.2) Lock shift cable adjuster (push button down). Place shiftlever in Park. Ensure shift indicator is adjusted. Recheck BTSIsystem. If system still does not operate as specified, go to next

step.3) Remove interlock solenoid by prying actuator end fittingfrom shift lever stud and prying adjuster block from bracket. Removeretaining clip. Compress adjuster block to release, slide away fromsolenoid as far as possible. See Fig. 1. With shift lever in Neutral,reinstall solenoid. Move shift lever to Park, BTSI solenoid actuatoris now properly adjusted. Reinstall adjustment retaining clip.4) Recheck BTSI system. If system does not operate asspecified, repeat previous step.NOTE:Lock cylinder must be in RUN position when park lock cable isremoved from or inserted into ignition switch inhibitor.Adjustment (Column Shift "E" & "K" Bodies)Turn lock cylinder to RUN position, depress brake pedal. Moveshift lever out of Park position. Disengage locking button, pull cableaway from solenoid until fitting starts to extend, compressing springinside ball joint. Allow cable to move back .04-.08" (1-2 mm), engagelocking button. See Fig. 2. Recheck BTSI system. If system does notoperate as specified, repeat procedure.Adjustment (Floor Shift)1) Remove center console trim for access to base of shiftlever. Place shift lever in Park. Turn lock cylinder to RUN positionto energize BTSI solenoid. Unlock cable adjuster at base of shiftlever by pressing locking button upward. Turn lock cylinder to LOCKposition.2) On "C", "F", "H" and "Y" bodies, push cable connector noseforward to remove slack. On "E" and "K" bodies, push cable housingtoward shifter to remove slack. On all models, with no load applied tocable, lock cable adjuster button by pressing locking button down.Install center console trim. Connect negative battery cable.3) Recheck BTSI system. If system does not operate asspecified, repeat previous step.Fig. 1: Adjusting BTSI Actuator ("C" & "H" Bodies)Courtesy of General Motors Corp.

Fig. 2: Adjusting Park Lock Cable ("E" & "K" Bodies)Courtesy of General Motors Corp.DIMMER SWITCH1) With switch removed from column bracket, insert a 3/32"drill bit into adjusting pin hole to limit switch travel. See Fig. 3.Insert actuator rod into switch. Install switch to column bracket,finger-tighten screws.2) Lightly push switch upward against actuator rod until nolash (free-play) exists between rod and switch. Tighten mountingscrews to 35 INCH lbs. (4 N.m). Remove drill bit. Ensure proper switchoperation using dimmer/headlight switch handle.Fig. 3: Adjusting Dimmer SwitchCourtesy of General Motors Corp.IGNITION SWITCHCAUTION: New ignition switch is pinned in OFF-LOCK position. Plasticpin must be removed before operating switch.

1) Set key lock cylinder in OFF-LOCK position. On fixedcolumn, set ignition switch slider (where actuator rod connects toswitch) to OFF-LOCK position by moving slider as far left as possible,and then one detent to right. See Fig. 4.2) On tilt column, set ignition switch slider (where actuatorrod connects to switch) to OFF-LOCK position by moving slider to rightas far as possible, and then one detent to left. See Fig. 4.3) Install switch. Tighten switch screws to 35 INCH lbs. (4N.m). Ensure ignition switch functions properly with lock cylinder inall positions.Fig. 4: Adjusting Ignition SwitchCourtesy of General Motors Corp.COLUMN SHIFT INDICATOR

"E" & "K" Bodies1) Position shift lever in Neutral. Loosen shift indicatoradjustment nut on steering column. Slide adjuster until shiftindicator is centered in Neutral.2) Move shift lever through all positions, and back toNeutral to check adjustment. Verify pointer indicates proper gearposition, and does not show 2 gear positions at same time. See Fig. 5.All Except "E" & "K" Bodies1) Position shift lever in Neutral. Position guide clip onedge of shift bowl to center position pointer in Neutral. Push cliponto bowl. Ensure that cable rests on bowl and not on column jacket.2) With gear selector in Neutral, holes must be visible onboth sides of pointer. Pointer must cover portions of "1" or be toright of "1" when transaxle is in LOW position. See Fig. 6.Fig. 5: Adjusting Column Shift Indicator ("E" & "K" Bodies)Courtesy of General Motors Corp.Fig. 6: Adjusting Column Shift Indicator (All Except "E" & "K"Bodies)Courtesy of General Motors Corp.SIR COIL ASSEMBLY

NOTE:If coil assembly hub or steering shaft were rotated afterassembly was removed, use the following procedure to centercoil ribbon before installing assembly. A new coil ribbondoes not require centering, as it is already centered andheld in position with a plastic tab. Remove tab after coilassembly is installed.1) Hold coil assembly with clear bottom upward to see coilribbon. While holding coil assembly housing and pressing spring lock,rotate hub in direction of arrow (on bottom of assembly) until itstops. Coil assembly should now be wound up snug against center hub.2) Rotate coil assembly hub in opposite direction about 2 1/2turns. Release spring lock between locking tabs in front of arrow.Coil assembly can now be installed if wheels are in straight-aheadposition.REMOVAL & INSTALLATION* PLEASE READ THIS FIRST *CAUTION: When battery is disconnected, vehicle computer and memorysystems may lose memory data. Driveability problems may existuntil computer systems have completed a relearn cycle. SeeCOMPUTER RELEARN PROCEDURES article in GENERAL INFORMATIONbefore disconnecting battery.NOTE:All components listed under REMOVAL & INSTALLATION can beremoved without removing steering column. To remove all othercomponents, remove steering column, and then performappropriate procedure under OVERHAUL. See Figs. 19-25.AIR BAG (INFLATOR) MODULERemoval1) See SERVICE PRECAUTIONS. Disable SIR system. See DISABLING& ACTIVATING AIR BAG SYSTEM.2) Loosen screws behind steering wheel using No. 30 Torx bit,until air bag module is released from steering wheel. Pull up air bagmodule, and then disconnect electrical connectors from rear of module.Remove module and position aside with pad facing upward.InstallationConnect electrical connectors to rear of module. Installmodule in steering wheel and install retaining screws. Tighten screwsto specification. See TORQUE SPECIFICATIONS table. Activate SIRsystem. See DISABLING & ACTIVATING AIR BAG SYSTEM.STEERING