instrument panel CHEVROLET DYNASTY 1993 Manual Online

Fig. 14 Speedometer System Diagnosis
Fig. 15 Vehicle Speed Sensor and ConnectorFig. 16 Vehicle Speed Sensor and Speedometer Pinion
8E - 66 INSTRUMENT PANEL AND GAUGES Ä

VEHICLE SPEED SENSOR TEST
For testing of the vehicle speed sensor and related
components using DRB II, refer to the appropriate
Powertrain Diagnostics Test Procedure Manual.
PRINTED CIRCUIT BOARD REPLACEMENT
(1) Remove cluster bezel.
(2) Remove instrument cluster.
(3) Remove tachometer drive module, if equipped.
(4) Remove six retaining screws (Fig. 18).
(5) Twist out all illumination and warning lamp
sockets. (6) Pull printed circuit board from cluster housing.
(7) For installation reverse above procedures. Posi-
tion printed circuit board on cluster housing, being
certain that all gauge pins are inserted correctly.
CLUSTER LAMP REPLACEMENT
Illumination Lamp Chart shows cluster as viewed
from rear. However, all lamps must be replaced by
removing cluster from instrument panel (Fig. 19).
SWITCH AND PANEL COMPONENT SERVICE
LOWER STEERING COLUMN COVER REPLACEMENT
(1) Disconnect park brake release rod from the
park brake handle. (2) Remove two screws attaching hood release (Fig.
20). (3) Remove fuse access door and remove steering
column cover attaching screw located directly above
the fuse block. (4) Remove six screws around outside of steering
column cover. (5) Remove steering column cover.
(6) For installation reverse above procedures.
CENTER MODULE LOWER COVER REPLACEMENT
(1) Open ash receiver and remove center module
bezel. (2) Remove module cover to instrument panel re-
taining screws (Fig. 20). (3) Remove module cover from vehicle.
(4) For installation reverse above procedures.
CENTER MODULE BEZEL REPLACEMENT
(1) Open ash receiver.
(2) Grip module bezel around outer edges and pull
rearward to release six spring-type retaining clips
(Fig. 20). (3) For installation position spring clips to instru-
ment panel and push firmly until seated. (4) Close ash receiver.
Fig. 17 Vehicle Speed Sensor Removal
Fig. 18 Printed Circuit Board
Fig. 19 Instrument Cluster Illumination Lamps
Ä INSTRUMENT PANEL AND GAUGES 8E - 67

HEADLAMP SWITCH REPLACEMENT
(1) Snap headlamp switch bezel out of instrument
panel pad (Fig. 21). (2) Remove three screws securing headlamp switch
mounting plate to instrument panel. (3) Pull headlamp switch and mounting plate rear-
ward from instrument panel opening. (4) Disconnect wiring connector from switch.
(5) Remove switch knob by depressing release but-
ton on the bottom on the switch and pulling knob out
from switch. (6) Snap headlamp switch escutcheon out of
mounting plate to gain access to mounting plate re-
taining nut. (7) Remove headlamp switch to mounting plate re-
taining nut and separate switch from mounting
plate. (8) For installation reverse above procedures.
A/C HEATER CONTROL REPLACEMENT
(1) Remove center bezel assembly.
(2) Remove A/C control to instrument panel retain-
ing screws (Fig. 22). (3) Pull control rearward and disconnect tempera-
ture control cable and electrical and vacuum connec-
tors. (4) Remove control from vehicle.
(5) For installation reverse above procedures.
Fig. 20 Lower Instrument Panel
Fig. 21 Headlamp Switch Assembly
8E - 68 INSTRUMENT PANEL AND GAUGES Ä

HEATER CONTROL LAMP REPLACEMENT
(1) Remove heater control. Refer to A/C Heater
Control for removal. (2) Pull control far enough to gain access to the
lamp socket. (3) Replace lamp. To remove lamp rotate socket
counter clockwise. To install rotate clockwise. (4) For installation reverse above procedures.
A/C CONTROL LAMP REPLACEMENT
(1) Remove heater control. Refer to A/C Heater
Control for removal. (2) Pry temperature and blower switch knobs off
with flat blade tool. To protect cosmetic face place
cardboard or similar material on the face plate while
prying. (3) Remove face plate by lifting on the six tabs.
Three on top and three on bottom of the face plate. (4) Replace lamp.
(5) For installation reverse above procedures.
HEATER CONTROL BLOWER SWITCHREPLACEMENT
(1) Remove heater control. Refer to A/C Heater
Control for removal. (2) Pry temperature and blower switch knobs off
with flat blade tool. To protect cosmetic face place
cardboard or similar material on the face plate while
prying. (3) Remove face plate by lifting on the six tabs.
Three on top and three on bottom of the face plate. (4) Pry blower switch off with flat blade tool. To
protect cosmetic face, place cardboard or similar ma-
terial on the face plate while prying. (5) To replace, line up blower switch terminals and
press firmly until the it bottoms out on the housing. (6) For installation reverse above procedures.
A/C CONTROL BLOWER SWITCHREPLACEMENT
(1) Remove heater control. Refer to A/C Heater
Control for removal. (2) Position the temperature knob at the maximum
heat position to gain screw access. (3) Remove two screws holding the blower switch
located on top of the control. (4) Pry the blower switch off with a flat blade tool.
(5) To replace, line up blower switch terminals and
press firmly until the it bottoms out on the housing. (6) For installation reverse above procedures.
GLOVE BOX MODULE REPLACEMENT
(1) Disconnect battery negative cable and isolate
or remove fuse #13 prior to removing switch or wires
may short to ground. (2) Open glove box door (Fig. 23).
(3) Remove check strap screws to allow full down-
ward movement of the glove box door. (4) Remove six screws attaching glove box module
to instrument panel. (5) Pull glove box module rearward and disconnect
wiring from lamp and switch. (6) Remove glove box from vehicle.
(7) For installation reverse above procedures.
When installing glove box module, be sure that left
edge of module is pressed against foam bead on trim
pad. This will assure that there will be an adequate
gap between right edge of glove box door and trim
pad.
ASH RECEIVER ASSEMBLY REPLACEMENT
(1) Open ash receiver and remove center module
bezel. (2) Remove ash receiver bracket to instrument
panel retaining screws (Fig. 23). (3) Pull assembly rearward off of locating pins and
disconnect wiring for lamp. (4) Remove ash receiver from vehicle.
(5) For installation reverse above procedures.
Fig. 22 A/C Heater Control
Fig. 23 Glove Box, Ash Receiver and Cigar Lighter
Ä INSTRUMENT PANEL AND GAUGES 8E - 69

CIGAR LIGHTER REPLACEMENT
(1) Remove center bezel assembly (Fig. 23).
(2) Remove center module lower cover or open for-
ward console lid. (3) Unscrew lighter receptacle shell from recepta-
cle and remove from base instrument panel. (4) Disconnect wiring connectors from lighter re-
ceptacle and remove from vehicle. (5) For installation reverse above procedures.
REAR WINDOW DEFOGGER AND/OR FOG LAMP SWITCH REPLACEMENT
(1) Remove center module bezel assembly (Fig. 20).
(2) Remove two switch bezel screws (Fig. 24).
(3) Pull switches and bezel rearward and discon-
nect wiring connector. (4) Remove two switch retaining screws.
(5) Remove switch from bezel.
(6) For installation reverse above procedures.
INTERMITTENT WIPE MODULE REPLACEMENT
(1) Remove lower steering column cover.
(2) Slide intermittent wipe module off of bracket
located on steering column reinforcement (Fig. 25). (3) Disconnect wiring connector from module and
remove module from vehicle. (4) For installation reverse above procedures.
GLOVE BOX LAMP AND SWITCHREPLACEMENT
(1) Disconnect battery and/or pull fuse # 13 before
starting removal procedure. (2) Open glove box door (Fig. 26).
(3) Carefully pry lamp from its mounting surface
with tip of a small screwdriver. (4) Pull lamp from box and disconnect electrical
leads. (5) Remove lamp.
(6) For installation reverse above procedures.
CONSOLETTE ASSEMBLY REPLACEMENT
(1) Remove shifter handle.
(2) Unsnap transmission range indicator bezel or
shift boot bezel from consolette, disconnect wiring
and remove bezel assembly (Fig. 27). (3) Remove two screws from side of armrest.
(4) Remove four caps which cover attaching
screws. (5) Remove four attaching screws.
(6) Lift consolette up and over shift mechanism to
remove. (7) For installation reverse above procedures.
Fig. 24 Rear Window Defogger and Fog Lamp Switch
Fig. 25 Intermittent Wipe Module
Fig. 26 Glove Box Lamp and Switch
8E - 70 INSTRUMENT PANEL AND GAUGES Ä

CENTER CONSOLE ASSEMBLY REPLACEMENT
(1) Place transmission in neutral and remove
shifter handle. (2) Unsnap transmission range indication bezel or
shift boot bezel from console, disconnect wiring and
remove bezel assembly (Fig. 27). (3) Unsnap power window/mirror switch bezel,
when so equipped and disconnect switch wiring. (4) Remove two screws from side of armrest.
(5) Remove arm rest and center console section as
a unit by lifting from the front and unsnapping from
front console section. (6) For installation reverse above procedures. Ad-
just transmission range indicator in the PARK posi-
tion.
CONSOLE GEAR SELECTOR INDICATOR LAMP REPLACEMENT
(1) Place shifter handle in Neutral position.
(2) Remove handle from shifter.
(3) Unsnap gear selector bezel and pull upward
(Fig. 27). (4) Remove indicator lamp socket from bezel to re-
place lamp. (5) For installation reverse above procedures. Ad-
just transmission range indicator in the PARK posi-
tion.
FRONT CONSOLE ASSEMBLY REPLACEMENT
(1) Remove shifter handle.
(2) Unsnap transmission range indicator bezel or
shift boot bezel from console assembly, disconnect
wiring and remove bezel assembly (Fig. 27). (3) Unsnap power mirror/window switch bezel,
when so equipped and disconnect switch wiring. (4) Open arm rest and remove three screws hold-
ing arm rest to center console retractor bracket. (5) Remove armrest and center console section as a
unit by lifting and unsnapping from forward console
section. (6) Remove center module bezel.
(7) Remove forward console and side walls as com-
plete unit by removing six sidewall attaching screws
to instrument panel and console bracket. Slide unit
rearward and lift to remove. (8) For installation reverse above procedures.(a) For adjustment move gearshift lever with
force into park position. (b) Check gear selector indicator for proper
alignment.
INSTRUMENT PANEL TOP COVER REPLACEMENT
(1) Place trim-stick tool in groove between the
panel top cover and pad surface (FIG. 28).
Fig. 27 Front and Center Console with Transmission Range Indicator
Ä INSTRUMENT PANEL AND GAUGES 8E - 71

(2) Pry cover up and forward until released from
instrument panel pad. (3) Lift top cover upward and rearward to remove
from vehicle. (4) For installation place top cover on panel open-
ing. Be certain that blades of top cover are located in
the retaining spring clips. (5) Push forward and down to engage in pad.
INSTRUMENT PANEL REPLACEMENT
CAUTION: Disconnect negative battery cable, in en-
gine compartment, before servicing instrument
panel.
(1) Remove windshield wiper arms.
(2) Open hood and remove cowl top plastic cover.
(3) Remove windshield washer reservoir.
(4) Pull connector loose from the A/C resistor block
and push wiring and grommet through bulkhead into
passenger compartment. (5) Remove the console/consolette assembly.
(6) Remove the passive restraint seat belt logic
control module wiring. (7) Remove six attaching nuts securing the instru-
ment panel to console support brace. (8) Remove the instrument panel to console sup-
port brace with the Air Bag System Diagnostic Mod-
ule attached. (9) Remove right and left cowl side and scuff plate
trim moldings. (10) Remove left and right A-pillar trim moldings.
(11) Remove instrument panel top cover (Fig. 28).
(12) Remove lower steering column cover.
(13) Disconnect the steering column wiring at the
25-way connector. (14) Disconnect park brake, stop lamp and speed
control wiring. (15) Remove five steering column support nuts and
lower steering column. Then remove two steering col-
umn attaching studs. (16) Disconnect engine harness wiring at 18-way
and 16-way connectors located on the left side panel
support bracket. (17) Remove glove box assembly.
(18) Remove the panel top cover assembly.
(19) Loosen the panel roll-down pivot bolts.
(20) Remove the defroster duct adapter from de-
froster duct. (21) Remove screws which attach instrument panel
to windshield fence line. Roll panel down, attach
heavy wire to hold in position and remove defroster
duct retaining screws. (22) Disconnect body wiring at the right side
18-way connector and left side 25-way connector. (23) Disconnect temperature mode cable at in-line
connector. Disconnect resistor block and blower mo-
tor wiring connectors.
Fig. 28 Instrument Panel and Top Cover
8E - 72 INSTRUMENT PANEL AND GAUGES Ä

(24) Disconnect antenna cable.
(25) Disconnect left and right demister hoses from
demister outlets on the panel. (26) Remove instrument panel from vehicle.
(27) For installation reverse above procedures.
INTERIOR LAMP REPLACEMENT
The Dome Lamp operates when the doors are open
or headlamp switch is placed in courtesy position.
DOME LAMP
(1) Pry the forward or rearward edge of the dome
lamp to free it from the retaining bracket. (2) Pry either the forward or rearward edge of the
lens away from the bezel and replace lamp. (3) For installation, snap lens into bezel and then
bezel into bracket.
TRUNK LAMP
Pry along rearward portion of lens and pivot out of
trunk trim panel. Remove lens and replace lamp. For installation, snap lens into trunk trim panel.
Ä INSTRUMENT PANEL AND GAUGES 8E - 73

AUDIO SYSTEM
CONTENTS
page page
ANTENNAS ............................ 20
COMPACT DISC PLAYER ................. 30 RADIOS
................................ 1
SPEAKERS ............................ 24
RADIOS INDEX
page page
Audio Diagnostic Test Procedures ............. 1
Description .............................. 1
Interference Elimination ..................... 1
Radio Removal AP Body Replacement ........ 19 Radio RemovalÐAA Body
.................. 18
Radio RemovalÐAC and AY Bodies .......... 18
Radio RemovalÐAG and AJ Bodies .......... 18
DESCRIPTION
For operation of the factory installed standard and
optional radios and the optional compact disc player,
refer to the Sound Systems Operating Instructions
Manual supplied with the vehicle. All vehicles are equipped with an Ignition-Off
Draw Connector which, is used when the vehicles are
originally shipped from the factory. This connector
which, is located near the battery, helps to prevent
battery discharge during storage. For specific connec-
tor type and location, refer to Group 8W, Wiring Di-
agrams. This connector is included in the radio memory cir-
cuitry and should be checked if the memory of time
or radio station programming is inoperative.
INTERFERENCE ELIMINATION
Some components are used on vehicles equipped
with a radio capacitor, to suppress radio frequency
interference/static. Capacitors are mounted in various locations, on the
generator either internal or external, internal to the
instrument cluster, and internal to the windshield
wiper motor. Ground straps are mounted from radio chassis to
instrument panel support structure, engine to cowl,
across engine mount on right hand side. On vehicles
with air conditioning there is a strap from evapora-
tor valve to cowl. These ground straps should be se-
curely tightened to assure good metal to metal
contact. Ground straps conduct very small high fre-
quency electrical signals to ground and require clean
large surface area contact. Radio resistance type spark plug cables in the high
tension circuit of the ignition system complete the in-
terference suppression (Fig. 1).
If radio noises are evident, be sure the capacitor
lead wires are making good contact on their respec-
tive terminals and are securely mounted. Faulty or
deteriorated spark plug wires should be replaced.
AUDIO DIAGNOSTIC TEST PROCEDURES
Whenever a audio malfunction occurs, first verify
that the radio wire harness is properly connected to
all connectors before starting normal diagnosis and
repair procedures. Refer to Audio Diagnostic Charts
and/or Radio Connector Circuit Chart (Fig. 2).
Fig. 1 Resistance Type Spark Plug Cables
Ä AUDIO SYSTEM 8F - 1

RADIO REMOVALÐAA BODY
(1) Remove center bezel by pulling straight back
disengaging the five clips. (2) Remove radio mounting screws (Fig. 3).
(3) Pull radio from panel and disconnect wiring,
ground strap and antenna lead from radio. (4) Remove radio.
INSTALLATION
(1) Connect wiring, ground strap and antenna lead
to radio. (2) Position radio into panel, install mounting
screws and tighten securely. (3) Install center bezel.
RADIO REMOVALÐAG AND AJ BODIES
(1) Remove center instrument panel bezel by pull-
ing toward the rear of the car (Fig. 4). (2) Remove two screws attaching radio to console.
(3) Pull radio through front face of console, discon-
nect wiring harness, antenna lead, and ground strap.
INSTALLATION
(1) Position radio so that the wiring harness, an-
tenna lead, and ground strap can be connected. (2) Install two screws attaching radio to console.
(3) Install center bezel by pushing in until clips
engage.
RADIO REMOVALÐAC AND AY BODIES
(1) Remove upper and lower bezel screws (Fig. 5)
and bezels.
(2) Remove two radio attaching screws.
(3) Disconnect wiring connectors and antenna ca-
ble. (4) Remove screw attaching ground strap.
(5) For installation reverse above procedures.
Fig. 3 Radio AssemblyÐAA BODY
Fig. 4 Radio AssemblyÐAG and AJ Bodies
Fig. 5 Radio AssemblyÐAC and AY Bodies
8F - 18 AUDIO SYSTEM Ä