Hummer H1 (2002+). Manual - part 86

___________________________________________

Transmission/Transfer Case 5-143

05745159

SHIFT CONTROL ASSEMBLY REMOVAL

NOTE:

Wavy washers eliminate any potential transfer case

shift linkage rattle (Figure 5-54). If a rattle is present on a vehi-
cle not equipped with a wavy washer, install one as shown. Re-
fer to parts manual for wavy washer part number.

NOTE:

Open shifter boot cover (unfasten snaps and pull apart

velcro strips) for access to shifter linkage.

Remove driver side inner kick panel.

Disconnect shift rod trunnions at housing shift arms
(Figure 5-54).

Figure 5-54: Shift Rod Connection (Illustration

Shown with Shifter Boot Cover Opened)

Remove two shift control boot protectors.

Remove shift control housing bolts and remove assembly
from body (Figure 5-55).

Move shift boot away from shift control housing for
access to wires (Figure 5-55).

Remove wiring tie strap.

NOTE:

Tag wires for installation reference.

Disconnect body harness wires from backup light switch.

Disconnect body harness wires from park/neutral position
switch wires.

Figure 5-55: Harness Wire Identification

Disconnect body harness lead from shift indicator wire.

10. Disconnect interlock cable at shifter (Figure 5-56).

11. Remove boot from shift control housing.

12. Remove shift control assembly.

Figure 5-56: Interlock Cable Attachment

SHIFT

ARM

TRANSFER

CASE

SHIFT ROD

TRUNNION

TRANSMISSION

SHIFT ROD

SHIFT

ARM

BOOT

PROTECTOR

WAVY

WASHERS

TRUNNION

FLAT

WASHERS

SHIFTER

BOOT

COVER

(SHOWN OPEN)

SHIFT

CONTROL

HOUSING

SHIFT CONTROL

ASSEMBLY

SHIFT

INDICATOR

WIRES

BACKUP

LIGHT

SWITCH

WIRES

PARK/NEUTRAL

POSITION

SWITCH WIRES

SHIFT

INTERLOCK

CABLE

5-144

Transmission/Transfer Case

___________________________________________

SHIFT CONTROL ASSEMBLY SERVICE

NOTE:

Shifter Boot Cover (procedure in this section) must be

removed for access to Shifter Control Boot.

The shift control housing and shift arms are not serviceable.
The shift arm mechanisms can be lubricated to correct a bind
condition when necessary. However, if any of the housing
components are worn, or damaged, the housing must be re-
placed as an assembly.

The only control assembly parts that can be replaced sepa-
rately, include the following (Figure 5-57):

• shift indicators

• shift knobs and spring pins

• housing cover plate and seal

• switches and retaining nuts

• wiring tie straps

• indicator bulb

Figure 5-57: Shift Control Assembly Serviceable Components

(Illustration Shown with Shifter Boot Cover Removed)

SHIFT

KNOB

SPRING

PIN

RELEASE

BUTTON

SHIFT

KNOB

SPRING

PIN

TRANSMISSION

LEVER

SWITCH

NUT

TIE STRAP

SHIFTER

BOOT

SWITCH

NUT

SEAL

COVER PLATE

INDICATOR

BULB

SWITCH AND

LAMP HARNESS

HOUSING

SHIFT

ARMS

BACKUP

LAMP SWITCH

SHIFT

CONTROL

HOUSING

TRANSFER

CASE LEVER

PARK/NEUTRAL

POSITION

SWITCH

TRANSMISSION

SHIFT INDICATOR

TRANSFER CASE

SHIFT INDICATOR

COVER

___________________________________________

Transmission/Transfer Case 5-145

05745159

PARK/NEUTRAL POSITION OR BACKUP LAMP
SWITCH REPLACEMENT

Remove driver side inner kick panel.

Open shifter boot cover for access to shift control arms.

Disconnect shift rods at shift control arms.

Remove bolts attaching shift control housing to tunnel
floor.

Lift up for access and remove interlock cable.

Remove shift control assembly.

Remove shifter boot cover and shifter boot (Figure 5-58).

Remove position switch screws and remove switch from
housing.

Remove tie strap and disconnect switch leads.

10. Disconnect backup or position switch wires at body

harness.

11. Install switch on shift control housing and secure with

lockwashers and screws.

12. Position wires in shifter boot and install shifter boot on

housing assembly.

13. Install shift control assembly.

14. Install housing attaching screws.

15. Connect shift rods to control assembly shift arms.

16. Install inner kick panel.

Figure 5-58: Shift Housing Switch Replacement

SHIFT CONTROL

ASSEMBLY

CONTROL

HOUSING

TIE STRAP

PARK/NEUTRAL

POSITION SWITCH

SHIFTER

BOOT

SHIFTER BOOT

COVER

5-146

Transmission/Transfer Case

___________________________________________

SHIFTER BOOT COVER REPLACEMENT

A “shifter boot cover” protects the shifter boot and linkage.
The shifter boot cover is made of a silicone coated fiberglass,
heat resistant material. This material provides the additional
benefits of reduced noise and heat intrusion from under the ve-
hicle into the passenger compartment.

Removal

WARNING: Exhaust system components can be ex-
tremely hot. To avoid injury, do not touch hot exhaust
system components.

The exhaust system passes directly under the shift control
assembly. Loosen, but do not remove, the two clamps
holding the heat shield to the exhaust pipe so that it can be
moved out of the way as necessary when performing the
following procedure.

Unfasten shifter boot cover snaps and pull apart velcro
strips to open cover (Figure 5-59).

Figure 5-59: Shift Rod Removal

Remove shift rods from shift control assembly.

Remove bezel from shift control assembly (Figure 5-60).

Remove fasteners securing shift control assembly to tunnel
and raise shift control assembly until interlock cable
contacts tunnel, restricting further upward movement.

Cut shifter boot cover from the lip to the interlock cable
hole as shown (Figure 5-60).

Work shifter boot cover lip out of tunnel opening and
remove from under vehicle (Figure 5-61).

Figure 5-60: Cutting Shifter Boot Cover

Figure 5-61: Shifter Boot Cover Removal

SHIFTER

SNAPS

SHIFT

BOOT

COVER

RODS

BEZEL

SHIFT CONTROL

TUNNEL

SHIFTER BOOT

CUT FROM COVER LIP TO

INTERLOCK CABLE

INTERLOCK

ASSEMBLY

COVER LIP

CABLE

TUNNEL

INTERLOCK

(UNDERNEATH VEHICLE)

CABLE

Content .. 84 85 86 87 ..