Hummer H1 (2006+). Manual - part 249

8-12

Steering System

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8.

Raise the steering column to the mounting bracket. Insert the thru-bolt, three washers, lockwasher, and the locknut. Finger
tighten the locknut.

9.

Slide the intermediate shaft yoke onto the splines while carefully aligning the scribe marks. Insert the bolt and tighten the
locknut to 60 lb-ft (81 N•m).

10. Tighten the thru-bolt and the locknut to 31 lb-ft (42 N•m).

11. Tighten the pivot bolt and the locknuts to 10 lb-ft (14 N•m).

12. Install the steering wheel.

13. Install the close-out panel.

14. Operate the vehicle to verify the steering wheel alignment.

Figure 8-13:   Steering Column Components

STEERING COLUMN MULTI-SWITCH REPLACEMENT

NOTE: This procedure covers the directional signal, horn, high beam, and hazard light switches.

Removal 

1.

Remove the close-out panel.

2.

Remove the locknut, lockwasher, three washers, and the thru-bolt from the mounting bracket and loosen the pivot bolts. The 
column will drop down as it pivots in the bracket (Figure  8-13).

3.

Remove the five screws and shroud (two halves) from the steering column.

4.

Disconnect the ground wires from the steering column.

5.

Remove the two screws and the multi-switch from the steering column (Figure  8-14).

6.

Remove the control handle from the multi-switch by pulling outward.

Installation 

1.

Attach the control handle to the multi-switch (Figure  8-14).

2.

Secure the multi-switch to the steering column with the two screws.

3.

Connect the ground wires to the steering column.

7.

Secure the shroud (two halves) to the steering column with the five screws.

MOUNTING BRACKET

THRU-BOLT

SHROUD

IGNITION SWITCH

IGNITION SWITCH 

SHROUD

MULTI-SWITCH 

STEERING COLUMN

INTERMEDIATE SHAFT

60 lb-ft (81 N •m)

MULTI-SWITCH

10 lb-ft (14 N•m)

31 lb-ft (42 N•m) 

CONNECTORS

CONNECTOR

LOCK CYLINDER

CONNECTOR

PIVOT BOLT

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 Steering System  8-13

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4.

Raise the steering column to the mounting bracket. Insert the thru-bolt, three washers, lockwasher and the locknut. tighten the
locknut to 10 lb-ft (14 N•m).

5.

Install the close-out panel.

Figure 8-14:   Steering Column Multi-Switch Replacement

LOCK AND SWITCH HOUSING ASSEMBLY REPLACEMENT

Removal 

1.

Disconnect the battery ground cable.

2.

Remove the close-out panel.

3.

Remove the locknut, lockwasher, three washers and the thru-bolt from the mounting bracket and loosen the pivot bolts. The
column will drop down as it pivots in the bracket (Figure  8-13).

4.

Remove the five screws and shroud (two halves) from the steering column.

5.

Disconnect the ground wires from the steering column

6.

Remove the two screws and the multi-switch from the steering column (Figure  8-14).

7.

Remove the screw and the interlock cable from the ignition switch.

8.

Remove the two bolts, the lock and switch housing assembly from the steering column.

Installation 

1.

Apply thread-locking compound to the bolt threads and secure the lock and switch housing assembly on the steering column 
with the two bolts.

2.

Secure the interlock cable to the ignition switch with the screw.

3.

Install the multi-switch.

4.

Connect the ground wires to the steering column.

5.

Secure the shroud (two halves) to the steering column with the five screws.

6.

Raise the steering column to the mounting bracket. Insert the thru-bolt, three washers, lockwasher and the locknut. Tighten the
locknut to 10 lb-ft (14 N•m).

7.

Install the close-out panel.

8.

Connect the battery ground cable.

9.

Verify that the ignition switch operates properly.

STEERING 

CONTROL HANDLE

MULTI-SWITCH

COLUMN

LOCK

CYLINDER

HOUSING

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8-14

Steering System

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STEERING COLUMN REPAIR

Lock and Switch Housing Assembly

Disassembly

NOTE: The key must stay in the ignition switch at all times. 

1.

Remove the lock cylinder and key assembly from the lock cylinder housing (Figure  8-15).

2.

Remove the two screws securing the upper retainer plate to the lock cylinder housing. Remove the retainer plate, the upper
bearing assembly and upper bearing sleeve from the lock cylinder housing.

3.

Remove the two screws and the multi-switch assembly from the lock cylinder housing (Figure  8-14). 

4.

Remove the two screws securing the ignition switch assembly to the lock cylinder housing. Remove the ignition switch
assembly (Figure  8-15).

5.

Remove the six stakes from the tube and bracket assembly (Figure  8-16). 

6.

Remove the two screws and remove the lock cylinder housing from the tube and bracket assembly. 

7.

Remove the retainer ring, shaft and bearing from the tube and bracket assembly. 

Assembly

1.

Install the shaft, bearing and retainer ring into tube and bracket assembly (Figure  8-16). 

2.

Secure the lock cylinder housing to the tube and bracket assembly with two screws. Tighten screws to 6-7 lb-ft (8.1-9.4 N•m). 

3.

Stake the bearing securely in six (6) places(Figure  8-16). 

4.

Secure the ignition switch assembly to the lock cylinder housing with two screws. Tighten screws to 35-40 lb-in. (3.9-4.5
N•m)(Figure 8-15).

5.

Secure the multi-switch assembly to the lock cylinder housing with two screws. Tighten screws to 35-40 lb-in. (3.9-4.5
N•m)(Figure 8-14).

6.

Install the upper bearing assembly and upper bearing sleeve in the lock cylinder housing (Figure 8-15).

7.

Install the retainer plate on the lock cylinder housing with two screws. Tighten screws to 35-40 lb-in. (3.9-4.5 N•m). 

8.

Install the lock cylinder and key assembly in the lock cylinder housing assembly. 

9.

Verify that ignition switch operates properly.

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 Steering System  8-15

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Figure 8-15:   Lock and Switch Housing Components

Steering Column and Shaft 

Disassembly

1.

Remove the two screws and the multi-switch assembly from the lock and switch housing (Figure  8-14). 

2.

Remove the two screws, lock and the switch housing assembly from the steering column. 

3.

Remove the six stakes from the tube and bracket assembly (Figure  8-16). 

4.

Remove the shaft, retainer ring, and bearing from the tube and bracket assembly. 

5.

Remove the retainer ring and the bearing from the shaft. 

Figure 8-16:   Steering Column and Shaft 

IGNITION LOCK CYLINDER 

COLUMN LOCK 

COLUMN LOCK 

STEERING COLUMN 

UPPER BEARING

    UPPER STEERING 

BEARING RETAINER PLATE

GEAR RETAINER

FLAT BEARING

LOCK GEAR

 SLEEVE

COLUMN BEARING

LOCK CYLINDER

 HOUSING

ASSEMBLY

AND KEY ASSEMBLY

IGNITION SWITCH

ASSEMBLY

STEERING

STAKES

STEERING COLUMN 

BEARING

RETAINER RING

 COLUMN

TUBE AND BRACKET

ASSEMBLY 

SHAFT

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