bulb CHEVROLET DYNASTY 1993 Workshop Manual

HEAD LINING
REMOVAL
(1) Disconnect battery negative cable.
(2) Pull dome lamp downward to disengage from
retaining ring in head lining. Separate lens from
lamp body and remove bulb. Separate bulb holder
from lamp body. Remove attaching screw holding re-
taining ring to roof bow, if equipped. (3) Remove screws holding coat hooks to roof above
quarter panels. (4) Remove roof rail and A-pillar mouldings.
(5) Remove screws holding sun visors to roof
header and disconnect wire connector, if equipped.
Remove inboard sun visor hangers. (6) Remove overhead console, if equipped.
(7) Pull front reading lamp downward to disengage
from retaining ring in head lining and disconnect
wire connector. Remove screws holding retaining
ring to roof header, if equipped. (8) Remove pinch welt holding headlining to sun
roof opening, if equipped. (9) Remove one quarter trim panel as necessary to
clear head lining removal path. (10) Disengage hook and loop fasteners holding
head lining to roof above rear window and slide head
lining from behind quarter panel. (11) Remove head lining from vehicle.
INSTALLATION
Reverse the preceding operation.
SUN ROOF WEATHERSTRIP
REMOVAL (FIG. 22)
(1) Remove sun roof sunshade and glass. Refer to
Owner's Manual for instructions. (2) Pull weatherstrip from pinch flange around sun
roof opening.
INSTALLATION
Reverse the preceding operation.
SUN ROOF AIR DEFLECTOR
REMOVAL (FIG. 22)
(1) Remove sun roof sunshade and glass. Refer to
Owner's Manual for instructions. (2) Disengage snap-on linkage at rear of air deflec-
tor in sun roof opening. (3) Remove screws holding air deflector to front of
sun roof opening.
INSTALLATION
Reverse the preceding operation.
SUN ROOF DRAIN TUBES
REMOVAL (FIG. 22)
(1) Remove head lining as necessary.
(2) Remove A-pillar or quarter trim covers as nec-
essary. (3) Remove cowl panel and sill plate trim as neces-
sary. (4) Disconnect effected drain tube from nipple at
sun roof opening. (5) Pull drain tube upward to remove from pillar
involved.
INSTALLATION
Reverse the preceding operation. Route the tube to
avoid kinks or puncture from sharp edges.
REAR WINDOW GLASS
REMOVAL (FIG. 23)
(1) Remove rear window mouldings.
(2) Remove interior trim as necessary to gain ac-
cess to rear window defogger wire connector and
ground screw, if equipped.
WARNING: WEAR EYE AND HAND PROTECTION
WHEN HANDLING SAFETY GLASS. PERSONAL IN-
JURY CAN RESULT.
CAUTION: Do not damage body or trim finish when
cutting out glass or applying fence primer.
(3) Cut the urethane around the perimeter of the
back window glass. Refer to Windshield section of
this group for proper procedures. (4) Separate the rear window from the vehicle.
INSTALLATION
(1) Prepare the work area, window fence, and glass
the same way as described in the Windshield section
of this group. (2) Place fence spacers at the locations shown (Fig.
23). (3) Apply a 10 mm (0.4 in.) bead of urethane
around the perimeter of the glass. (4) Install the glass in the same manner described
in the Windshield section of this group. (5) Install the rear window moulding.
(6) Connect rear window defogger wiring and in-
stall interior trim. (7) After urethane has cured, water test rear win-
dow to verify repair. Verify rear window defogger op-
eration, see Group 8N, Rear Window Defogger.
Ä AJ-BODY 23 - 81

INSTALLATION
Reverse The preceding operation.
HEAD LINING
REMOVAL (FIG. 41)
(1) Disconnect battery negative cable.
(2) Pull dome lamp downward to disengage from
retaining ring in head lining. Separate lens from
lamp body and remove bulb. Separate bulb holder
from lamp body. Remove attaching screw holding re-
taining ring to roof bow. (3) Remove screws holding coat hooks to roof above
rear doors. (4) Remove roof rail and A-pillar mouldings.
(5) Remove screws holding sun visors to roof
header and disconnect wire connector, if equipped.
Remove inboard sun visor hangers. (6) Remove overhead console, if equipped.
(7) Pull front reading lamp downward to disengage
from retaining ring in head lining and disconnect
wire connector. Remove screws holding retaining
ring to roof header. (8) Remove pinch welt holding headlining to sun
roof opening, if equipped. (9) Remove inside rear view mirror from wind-
shield bracket if necessary. (10) Disengage hook and loop fasteners holding
head lining to roof above rear window and slide head
lining forward about 25 mm (1 in.). (11) Shift the front of head lining to one side to
pull head lining from behind B-pillar trim. Pull head
lining from behind other B-pillar trim. (12) Allow front of head lining to drop downward.
Slide head lining forward from behind quarter panel
trim. (13) Remove head lining from vehicle.
INSTALLATION
Reverse the preceding operation.
SUN ROOF WEATHERSTRIP
REMOVAL (FIG. 42)
(1) Remove sun roof sunshade and glass. Refer to
Owner's Manual for instructions. (2) Pull weatherstrip from pinch flange around sun
roof opening.
INSTALLATION
Reverse the preceding operation.
SUN ROOF AIR DEFLECTOR
REMOVAL (FIG. 42)
(1) Remove sun roof sunshade and glass. Refer to
Owner's Manual for instructions.
Fig. 39 Floor Carpet and SilencersÐTypical
Fig. 40 Overhead ConsoleÐTypical
Fig. 41 Head LiningÐTypical
23 - 114 AP-BODY Ä

INSTALLATION
Reverse the preceding operation.
REAR DOOR FIXED WINDOW MODULE
REMOVAL (FIG. 22)
(1) Remove rear door trim panel.
(2) Remove rear door glass.
(3) Remove screws and bolts holding rear door
fixed glass module to door. (4) Separate fixed glass module from door.
INSTALLATION
Reverse the preceding operation.
OVERHEAD CONSOLE
REMOVAL (FIG. 23)
(1) Remove screws holding overhead console to re-
inforcement bracket. (2) Slide overhead console rearward to separate re-
inforcement bracket retainer tab from console. (3) Lower console from roof and disconnect wire
connectors.
INSTALLATION
Reverse The preceding operation.
HEAD LINING
REMOVAL (FIG. 24)
(1) Disconnect battery negative cable.
(2) Pull dome lamp downward to disengage from
retaining ring in head lining. Separate lens from
lamp body and remove bulb. Separate bulb holder
from lamp body. Remove attaching screw holding re- taining ring to roof bow, if equipped.
(3) Remove screws holding coat hooks to roof above
rear doors. (4) Remove roof rail and A-pillar mouldings.
(5) Remove screws holding sun visors to roof
header and disconnect wire connector, if equipped.
Remove inboard sun visor hangers. (6) Remove overhead console, if equipped.
(7) Pull front reading lamp downward to disengage
from retaining ring in head lining and disconnect
wire connector. Remove screws holding retaining
ring to roof header, if equipped. (8) Remove pinch welt holding headlining to sun
roof opening, if equipped. (9) Remove inside rear view mirror from wind-
shield bracket if necessary.
Fig. 21 Rear Door Outer CoverÐAY-P Body
Fig. 22 Rear Door Fixed Window
Fig. 23 Overhead Console
23 - 142 AY-BODY Ä

tem control. The computer control panel is not ser-
viceable except for the illumination bulbs. For bulb replacement, refer to A/C-Heater Control
Lamp Replacement in Group 8E Instrument Panel. The ATC Computer/Control Panel is located in the
center of the instrument panel above the radio.
REMOVAL AND INSTALLATION
Refer to A/C-Heater control replacement in the
Switch and Panel Component section of Group 8E,
Instrument Panel and Gauges.
POWER MODULE
The power module (PM) (Fig. 4) receives pulse
width modulated logic signals from the computer
control. The PM then supplies varied voltage to the
blower motor ground circuit for different blower
speeds based on the logic signal. The power module
is not serviceable and must be replaced if found to be
defective.
REMOVAL AND INSTALLATION
(1) Disconnect the negative battery cable.
(2) Remove glove box/ash tray assembly. Refer to
Switch and Panel Component Service section of
Group 8E. (3) Remove the four PM attaching screws (Fig. 5).
(4) Disconnect electrical connector.
(4) Gently extract PM (to prevent damage to A/C
evaporator) from A/C-heater housing and remove
from under instrument panel. To install, reverse the preceding operation. Perform
systems check.
AMBIENT TEMPERATURE SENSOR
The ambient air temperature sensor is located in
the A/C housing above the glove box. This is also a
thermistor and will pick up on the environmental
ambient temperature. The computer control uses the
information provided by the ambient sensor to:
² Regulate the low blower speed
² Temperature offsets
² Mode control
The ambient sensor is not serviceable and must be
replaced if found to be defective. The ambient temperature sensor is plugged into a
two wire receptacle in the A/C-heater housing behind
and above the glove box.
REMOVAL AND INSTALLATION
(1) Remove glove box/ash tray assembly.
(2) Locate and remove two attaching screws on
sensor receptacle (Fig. 6). (3) Carefully pull receptacle and sensor from hous-
ing.
CAUTION: It is possible for the sensor to hang up
on the edge of the hole in the A/C-heater housing
assembly during removal. This may cause the sen-
sor to disengage from the receptacle and fall into
the housing.
Fig. 3 ATC Computer ControllerÐAspirator Air Intake
Fig. 4 Power ModuleÐAmbient TemperatureSensorÐFresh/Recirc Door Actuator
Fig. 5 Power Module Removal and Installation
Ä HEATING AND AIR CONDITIONING 24 - 67