This document provides instructions for replacing the ignition lock cylinder on a 1998 Buick Skylark while the vehicle is on the road. The procedure involves removing trim covers and disconnecting the supplemental inflatable restraint system before pulling the ignition lock cylinder out of the steering column. Reinstallation requires inserting the lock cylinder while rotating the key and reconnecting related components. Specifications for tightening fasteners on the steering wheel and column are also provided.

1. 1998 Buick Skylark | Achieva, Grand Am, Skylark, (VIN N) Service Manual | Steering |
Steering Wheel and Column - Standard | Specifications | Document ID: 482139
Fastener Tightening Specifications
Application
Specification
Metric English
Column Bracket Support Bolts 27 N·m 20 lb ft
Column Covers Screws to Column 9 N·m 80 lb in
Inflator to Steering Wheel Screws 10 N·m 89 lb in
Lower Pinch Bolt 41 N·m 30 lb ft
Redundant Radio Control Screws 1 N·m 9 lb in
Steering Wheel Nut to Shaft 41 N·m 30 lb ft
Upper Pinch Bolt 41 N·m 30 lb ft
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2. 1998 Buick Skylark | Achieva, Grand Am, Skylark, (VIN N) Service Manual | Steering |
Steering Wheel and Column - Standard | Visual Identification | Document ID: 609365
Steering Column Disassembled View
Standard Steering Column
(1) Flanged Prevailing Torque Nut
(2) Retaining Ring
(3) SIR Coil
(4) Wave Washer
(5) Bearing Retainer
(6) Shaft Lock
(7) Turn Signal Cancel Cam Assembly
(8) Upper Bearing Spring
(9) Upper Bearing Inner Race
(10) Adapter Screws
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3. (11) Steering Column Housing Assembly
(12) Ignition Lock Actuator Assembly
(13) Lock Pre-Load Spring
(14) Ground Strap
(15) Mounting Plate
(16) Bearing Retainer
(17) Ignition Switch Assembly
(18) Tapping Screws
(19) Lock Bolt Assembly
(20) Lock Bolt Support Bracket
(21) Tapping Screws
(22) Bearing Retainer
(23) Steering Shaft Assembly
(24) Support Screws
(25) Support Mounting Adapter
(26) Steering Column Jacket Assembly
(27) Wire Restraint Clip
(28) Adapter and Bearing Assembly
(29) Lower Bearing Seat
(30) Lower Bearing Spring
(31) Lower Spring Retainer
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4. 1998 Buick Skylark | Achieva, Grand Am, Skylark, (VIN N) Service Manual | Steering |
Steering Wheel and Column - Standard | Component Locator | Document ID: 540047
Standard Wheel/Column Component Views
Center Console
LH Lower Instrument Panel near Steering Column
(1) PRNDL Connector
(2) ETS Connector
(3) Automatic Transaxle Control
(4) Clip
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5. Center Instrument Panel near Tie Bar
(1) Cruise Control Brake Switch
(2) Brake Switch
(3) SIR Branch
(4) SIR SDM Harness
(5) Cruise Control Switch
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6. LH Side of the Engine Compartment
(1) S227
(2) S439
(3) S391
(4) ETS
(5) BTSI
(6) PRNDL Control Module
(7) S277
(8) S327
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7. LH Side of Instrument Panel
(1) Engine Compartment Fuse Center
(2) Fuse Block Bracket
(3) Battery
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8. Lower LH of Steering Column
(1) Steering Column Wiring Branch
(2) DLC Cover
(3) Screw
(4) DLC
(5) Rear Defogger Relay
(6) Fuse Block
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9. LH Side of Engine
(1) Multi-Function Lever
(2) SIR Coil
(3) Ignition Lock Solenoid
(4) Passlock Connector Lead
(5) Windshield Wiper Switch Lead
(6) SIR Lead
(7) SIR Connector
(8) DLC Lead
(9) S128
(10) S127
(11) S200
(12) S205
(13) S204
(14) S423, S424
(15) LH Stalk Switch Branch
(16) S202
(17) Headlamp Switch Lead
(18) Ignition Switch Connector
(19) Wiper Switch
(20) Passlock Connector Lead
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10. (1) Ground Lead
(2) Transaxle Range Switch
(3) Trans Shift Cable Bracket
(4) Engine Wiring Harness
(4) Engine Wiring Harness
(5) Engine Harness To Rear Lead
(6) S111, A/C Diode, S110
(7) Coolant Fan
(8) Automatic Transaxle Connector
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11. 1998 Buick Skylark | Achieva, Grand Am, Skylark, (VIN N) Service Manual | Steering |
Steering Wheel and Column - Standard | Component Locator | Document ID: 541096
Standard Wheel/Column Connector End Views
Transaxle Range Switch C1
Connector Part Information
• 12191757
• 4-Way F Metri-Pack Series 150 (LT GRY)
Pin Wire Color Circuit No. Function
A WHT 776 Transaxle Position Switch Signal - Parity BIT
B YEL 772 Transaxle Position Switch Signal - BIT 2
C GRY 773 Transaxle Position Switch Signal - BIT 3
D BLK/WHT 771 Transaxle Position Switch Signal - BIT 1
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13. 1998 Buick Skylark | Achieva, Grand Am, Skylark, (VIN N) Service Manual | Steering |
Steering Wheel and Column - Standard | Repair Instructions | Document ID: 482224
Ignition Lock Cylinder Replacement - On Vehicle (With
Key)
Removal Procedure
Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK
position, and all electrical loads must be OFF before servicing any electrical component.
Disconnect the negative battery cable to prevent an electrical spark should a tool or
equipment come in contact with an exposed electrical terminal. Failure to follow these
precautions may result in personal injury and/or damage to the vehicle or its components.
1. Disconnect the negative battery cable.
2. Disable the supplemental inflatable restraint (SIR) system. Refer to Disabling the SIR System
in SIR.
3. Remove the three screws from the lower left insulator panel.
4. Remove the lower left insulator panel.
5. Disconnect 2 yellow 2-way SIR connectors.
6. Remove the tilt lever. Refer to Tilt Lever Replacement - On Vehicle in Steering Wheel and
Column - Tilt.
7. Remove 3 Torx® screws (4) from the trim covers. (Pontiac and Oldsmobile shown, Buick
similar)
8. Remove the upper steering column trim cover (1).
9. Remove the lower steering column trim cover (5).
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14. 10. Turn the ignition lock cylinder (6) to the RUN position.
11. Push down and hold the ignition lock cylinder locking button on the rear of the bearing and
housing assembly.
12. Remove the ignition lock cylinder by pulling the ignition lock cylinder (6) away from the
steering column.
Installation Procedure
1. Install the ignition lock cylinder (6) into the steering column:
1.1. Turn the lock cylinder to the RUN position.
1.2. Push in the lock cylinder while rotating the key approximately 5 degrees in the
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15. 2. Install the upper steering column cover (1) and the lower steering column cover (5) with
3 Torx® head screws (4).
3. Install the tilt lever. Refer to Tilt Lever Replacement - On Vehicle in Steering Wheel and
Column - Tilt.
4. Connect 2 yellow 2-way SIR connections.
5. Install the lower left insulator panel with 3 screws.
6. Enable the SIR system. Refer to Enabling the SIR System in SIR.
7. Connect the negative battery cable.
8. Perform the Passlock Learn Procedure. Refer to Vehicle Theft Deterrent (VTD) Operation in
Theft Deterrent.
counterclockwise direction.
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