GMC 4000 Series Service Manual page 64

Figure 17— Door Lock Attaching Screws
DOOR LOCK A N D REMOTE CONTROL
M ECH ANISM REPLACEMENT
NOTE: Figure 16 illustrates the position of
the lock and remote control mechanism components.
REMOVAL (Fig. 17)
1. Remove the door inside lock knob which is
threaded on lock rod.
2. Remove the lower access panel from door
inner panel as directed previously.
3. Raise window and then remove the door in­
side handle as directed previously.
4. Remove three screw s which attach remote
control to door inner panel. Lower control to door
access opening, then disengage fastener at pull-
rod. Separate rod and remove control from door.
5. Remove the lock cylinder assembly from
outer side of door as directed previously.
6. At rear edge of door, remove two run chan­
nel retainer screws to provide clearance for re­
moval of lock mechanism.
7. At rear edge of door, remove three special
locking-type screws which attach lock mechanism
to door frame. Lower the lock and attached two
rods out through access opening in door.
8. Separate rods from lock mechanism by
disengaging fasteners.
INSTALLATION (Figs. 16 and 17)
Install lock mechanism with rods and remote
control in reverse of the "Removal" procedures.
IMPORTANT: Make sure to use the three
G M C S E R V I C E M A N U A L
special locking-type screw s which attach lock
mechanism to door frame. Check operation of door
lock and remote control mechanism after install­
ation. As required, remote control unit may be
shifted slightly on door inner panel to obtain sat­
isfactory lock operation.
REMOVAL
of door.
tor handle and escutcheon plate.
R E G U L A T O R A R M
Figure 18— Rem oving Regulator Arm from Track
DOOR W IN D O W REGULATOR
REPLACEMENT
1. Remove access panel from lower portion
2. Lower window and remove window regula­
Figure 1 9 — Low ering Regulator from D oor
Sec. 1
Page 57
TILT CAB
T-5805
R E G U L A T O R
A S S E M B L Y