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Home >> GMC Truck >> 1998 >> Envoy 4WD V6-4.3L VIN W >> Repair and Diagnosis >> Steering and Suspension >> Steering >> Steering Column >> Service and Repair >> - With Tilt Column >> Lower Steering Shaft Assembly

Lower Steering Shaft Assembly

NOTE: This article also includes service procedures for the following components:
Lower steering shaft assembly:
^ Sphere
^ Joint spring
^ Steering column support assembly
^ Adapter & bearing assembly
^ Steering column jacket assembly




Tilt Steering Column - Part 1 Of 2:




Tilt Steering Column - Legend - Part 2 Of 2:






^ Tools Required:
- J 21854-01 Pivot Pin Remover
- J 41352 Modular Column Holding Fixture

REMOVE OR DISCONNECT

NOTICE: Once steering column is removed from vehicle, the column is extremely susceptible to damage. Dropping steering column assembly on its end could collapse steering shaft or loosen plastic injections which maintain column rigidity. Leaning on steering column assembly could cause jacket to bend or deform. Any of the above damage could impair steering column's collapsible design. If it is necessary to remove steering wheel, use only the specified steering wheel puller and holding fixture. Never place column directly into a vise. Under no conditions should the end of the shaft be hammered on as hammering could loosen plastic injections which maintain steering column rigidity.

1. Steering column guide assemblies from steering column jacket assembly (58).
2. Do steps 1 through 4 under REMOVE OR DISCONNECT, in STRG COL TILT HEAD ASM.
3. Refer to CAUTION and do steps 4 and 5 under REMOVE OR DISCONNECT, in TILT SPRING.
4. Cplg & strg shaft assembly (62) from lower strg shaft assembly (37).
^ Remove rd hd locking bolt (67).
^ Remove large flange hex nut (68).
5. Adapter & bearing assembly (60) from jacket assembly (58).
6. Two pivot pins (56) using J 21854-01.





7. Steering column tilt head assembly (26) with steering shaft assembly.
^ Install and pull tilt arm to disengage steering wheel lock shoes from dowel pins in steering column support assembly (57).




Correct Upper To Lower Shaft Orientation:





Important: Mark race & upper shaft assembly (34) and lower steering shaft assembly (37) to ensure proper assembly. Failure to assemble properly will cause steering wheel to be turned 180°.

DISASSEMBLE
^ Lower steering shaft assembly (37) from race & upper shaft assembly (34) and steering column tilt head assembly (26).
A. Race & upper shaft assembly (34) from lower steering shaft assembly (37).
^ Tilt 90° to each other and disengage.
B. Centering sphere (35) from upper shaft assembly (34).
^ Rotate sphere 90 degrees and slip out.
C. Shaft preload spring (36) from centering sphere (35).

ASSEMBLE
^ Lower steering shaft assembly (37) to race & upper shaft assembly (34) and steering column tilt head assembly (26).
A. Shaft preload spring (36) to centering sphere (35).
B. Centering sphere (35).
^ Lubricate with lithium grease. Slip into upper shaft assembly (34) and rotate sphere 90°.
C. Lower steering shaft assembly (37) to race & upper shaft assembly (34).
^ Line up marks and tilt assemblies 90 degrees to each other.
8. Four torx head screws (55).
9. Steering column support assembly (57).

INSTALL OR CONNECT

NOTICE: Always use the correct fastener in the proper location. When you replace a fastener, use ONLY the exact part number for that application. The manufacturer will call out those fasteners that require a replacement after removal. The manufacturer will also call out the fasteners that require thread lockers or thread sealant. UNLESS OTHERWISE SPECIFIED, do not use supplemental coatings (paints, greases, or other corrosion inhibitors) on threaded fasteners or fastener joint interfaces. Generally, such coatings adversely affect the fastener torque and joint clamping force, and may damage the fastener. When you install fasteners, use the correct tightening sequence and specifications. Following these instructions can help you avoid damage to parts and systems. Failure to do so may result in component damage or malfunction of steering column.

1. Steering column support assembly (57).
2. Four torx head screws (55).
^ Tighten screws (55) to 17 Nm (13 lb ft).

3. Do steps 1 through 3, and 5 through 7 under INSTALL OR CONNECT, in STRG COL TILT HEAD ASM.
4. Adapter & bearing assembly (60) to steering column jacket assembly (58).





^ Position tab on adapter & bearing assembly (60) with slot in steering column jacket assembly (58) and push together.
5. Cplg & strg shaft assembly (62) to lower strg shaft assembly (37).
^ Tighten bolt (67) and nut (68) to 62 Nm (49 lb ft).

6. Do all steps under INSTALL OR CONNECT, in COIL ASSEMBLY.
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