steering CHEVROLET DYNASTY 1993 Repair Manual

(a) Route transmission range indicator guide as-
sembly under left steering column wing and down
left side of column (Fig. 12). (b) Insert flange of column insert into column,
squeeze legs together with tabs under column
jacket and engage lock bar to secure insert (Fig.
14). (c) Hook cable eyelet to steering column actuator
check pointer, should indicate neutral. Do not kink
or bind transmission range indicator guide tube
and position guide tube in original location. (d) Adjust with tool if necessary to center pointer
on N (Neutral) and check in other gears (Fig. 15).
(4) Install upper and lower steering column cover.
(5) Install the rear window defogger bezel and ra-
dio bezel. (6) Install cluster bezel.
(7) Reconnect battery.
REMOVALÐCLUSTER WITHOUT TRANSMISSION RANGE
INDICATOR FROM STEERING COLUMN (1) Remove cluster bezel (Fig. 10).
(2) Remove four screws attaching cluster to base
panel. (3) Pull cluster rearward carefully, reach behind
and disconnect the two harness connectors. (4) Carefully rotate cluster and remove the two
transmission range indicator screws. (5) Remove cluster assembly.
(6) For installation reverse above procedures. (a) Do not kink guide tube when installing clus-
ter. (b) Replace guide tube behind fuse block.
GAUGES
It is not necessary to remove instrument clus-
ter assembly from vehicle for gauge replace-
ment. When removing gauge assemblies from cluster,
gauge must be pulled straight out, not twisted, or
damage to gauge pin may result.
MULTIPLE GAUGE MALFUNCTION
If the fuel, voltage and tachometer gauges appear
to be malfunctioning, remove the cluster assembly.
Check for good pin contact between the wire harness
and printed circuit board. If there is good contact,
check for ignition voltage at ignition cavity C of the
black connector. If there is ignition voltage, check for
continuity between the wire harness ground cavity H
of the black connector and ground. If there is conti-
nuity, replace printed circuit board. If the temperature, oil pressure and speedometer
gauges appear to be malfunctioning remove the clus-
ter assembly. Check for a good contact between the
wire harness and the printed circuit board. If there is
good contact, check for ignition voltage at cavity J of
the red connector. If there is voltage, check for con- tinuity at cavity H of the black connector. If there is
continuity, replace the printed circuit board.
If the temperature, fuel, voltage and speedometer
gauges appear to be malfunctioning, remove the clus-
ter assembly. Check for good pin contact between the
wire harness and the printed circuit board. If there is
good contact, check ignition voltage at cavity J of the
red connector. If there is voltage, check for continuity
at cavity H of the black connector. If there is conti-
nuity, replace the printed circuit board.
GAUGE INOPERATIVE (FIG. 17 THROUGH 23)
(1) Remove gauge in question.
Fig. 17 Fuel Gauge PinsÐWith Tachometer
Fig. 18 Fuel Gauge PinsÐWithout Tachometer
Ä INSTRUMENT PANEL AND GAUGES 8E - 7

CONDITION: SPEEDOMETER AND ODOMETER ARE INOPERATIVE OR OPERATESINTERMITTENTLY
PROCEDURE
Check for defective vehicle speed sensor wiring.
CONDITION: OIL GAUGE, FUEL GAUGE, TEMPERATURE GAUGE, OR VOLTAGE GAUGEINOPERATIVE
PROCEDURE
Check for defective sending unit or wiring: (a) Sending units and wiring can be checked by
grounding the connector leads, at the sending unit,
in the vehicle. (b) With the ignition in the ON position, a
grounded input will cause the oil, fuel, or temper-
ature gauge to read maximum.
CONDITION: CLUSTER DISPLAY DOES NOT DIM WHEN HEADLAMP SWITCH ISACTIVATED AND RHEOSTAT ROTATED
PROCEDURE
(1) Check fuses in headlamp circuit.
(2) Check for loose connections or defective wiring
from headlamp switch to the cluster. (3) Check for defective headlamp switch.
(4) The electronic instrument cluster requires both
a marker feed and illumination feed to operate cor-
rectly.
SWITCH AND PANEL COMPONENT SERVICE
HEADLAMP/FOG LAMP SWITCH REPLACEMENT
(1) Remove cluster bezel (Fig. 40).
(2) Remove three screws securing headlamp switch
mounting plate to base panel (Fig. 41). (3) Pull headlamp/fog lamp switch mounting plate
rearward. Disconnect wiring connectors from head-
lamp switch and fog lamp switch pigtail (Fig. 42). (4) Remove knob and stem by depressing button on
bottom of the switch (Fig. 43). (5) Snap-out escutcheon.
(6) Remove fog lamp switch from escutcheon.
(7) Remove nut that attaches headlamp switch to
mounting plate (Fig. 44). (8) For installation reverse above procedures.
FOG LAMP SWITCH TEST
(1) Remove the fog lamp switch from mounting lo-
cation. (2) Disconnect the wiring harness from the switch
pigtail. (3) Using a Ohmmeter, test for continuity between
the terminals of the switch pigtail (Fig. 45). (4) If not OK, replace switch.
LOWER STEERING COLUMN COVERREPLACEMENT
(1) Disconnect park brake release rod from park
brake. (2) Remove fuse box access door and remove screw
from lower column cover (Fig. 46). (3) Remove screws from lower cover, four across
the top and two on bottom. (4) Remove lower steering column cover.
(5) For installation reverse above procedures.
LEFT LOWER INSTRUMENT PANEL SILENCER REPLACEMENT
(1) Remove screws from front of silencer (Fig. 47).
(2) Remove push nut.
(3) Remove silencer.
(4) For installation reverse above procedures.
RIGHT LOWER INSTRUMENT PANEL SILENCER REPLACEMENT
(1) On floor shift vehicles, remove console assem-
bly and center brace bracket. (2) On column shift vehicles, remove center brace
bracket. (3) Remove screws from front of silencer (Fig. 47).
(4) Remove three push nuts from rear of silencer.
(5) Remove lower right silencer.
(6) For installation reverse above procedures.
GLOVE BOX ASSEMBLY REPLACEMENT
(1) Disconnect battery negative cable and isolate
or remove fuse #2 prior to removing switch or wires
may short to ground. (2) Open glove box door and disconnect check
strap. (3) Remove glove box light and switch by squeez-
ing retaining tabs from behind switch mount and
slide rearward. Disconnect wiring connectors. (4) Remove 11 screws from glove box assembly
(Fig. 48). (5) Remove glove box assembly.
Fig. 36 Electronic Cluster
Ä INSTRUMENT PANEL AND GAUGES 8E - 15

(2) Remove glove box assembly (Fig. 49). Refer to
Glove Box Assembly Replacement. (3) Remove screw from relay.
(4) Disconnect wiring.
(5) Remove relay. (6) For installation reverse above procedures.
REAR WINDOW DEFOGGER SWITCH
REPLACEMENT
(1) Remove left bezel by pulling straight back.
(2) Press tabs and pull switch rearward.
(3) Disconnect wiring and remove switch.
(4) For installation reverse above procedures.
INSTRUMENT PANEL CENTER BEZELREPLACEMENT
(1) Pull bezel straight back disengaging five clips.
(2) Disconnect ash receiver lamp and wiring from
bezel. (3) For installation reverse above procedures.
ASH RECEIVER/CUP HOLDER REPLACEMENT
(1) Remove center bezel. Disconnect ash receiver
lamp socket. (2) Remove four screws from center module and re-
move module.
Fig. 42 Headlamp Switch Wiring Connectors
Fig. 43 Headlamp Switch Knob and Stem
Fig. 44 Headlamp Switch Mounting Nut
Fig. 45 Fog Lamp Switch Test
Fig. 46 Lower Steering Column Cover
Ä INSTRUMENT PANEL AND GAUGES 8E - 19

(3) Remove four screws from ash receiver/cup
holder housing. (4) For installation reverse above procedures.
AIR CONDITIONING CONTROLREPLACEMENT
(1) Disconnect battery negative cable and isolate
or remove fuse #2 prior to removing switch or wires
may short to ground. (2) Remove center bezel. Disconnect ash receiver
lamp socket. (3) Remove glove box assembly. Refer to Glove Box
Assembly Replacement. (4) Reach through glove box opening and discon-
nect vacuum lines. (5) Remove two control mounting screws (Fig. 50).
(6) Slide control rearward, disconnect cable, and
electrical wiring. (7) Remove unit.
(8) For installation reverse above procedures.
CIGAR LIGHTER ASSEMBLY REPLACEMENT
(1) Remove center bezel. Disconnect ash receiver
lamp socket. (2) Remove two screws from bezel of the lighter as-
sembly. (3) Pull assembly rearward and disconnect wiring.
(4) For installation reverse above procedures.
TRAVELER/MESSAGE CENTER REPLACEMENT
(1) Remove cluster bezel.
(2) Remove four mounting screws.
(3) Pull unit rearward and disconnect wiring.
(4) For installation reverse above procedures.
INSTRUMENT PANEL
INSTRUMENT PANEL TOP COVER REPLACEMENT
(1) Lift up rearward edge of instrument panel top
cover. (2) Pull panel rearward to remove.
(3) To install: position top cover and snap into
place, pull rearward for proper fit.
INSTRUMENT PANEL REPLACEMENT
CAUTION: Disconnect negative battery cable, in en-
gine compartment, before servicing instrument
panel.
(1) Disconnect battery negative cable and isolate
or remove fuse #2 prior to removing switch or wires
may short to ground. (2) Remove left and right A-pillar trim.
(3) Remove left and right cowl side trim.
(4) Remove glove box assembly. Refer to Glove Box
Assembly Replacement. (5) Remove four relays above glove box assembly.
(6) Reach through glove box opening and discon-
nect A/C control vacuum lines, radio noise suppressor
wires, and blower motor/cycling switch wires. (7) Remove hood release handle.
(8) Remove lower steering column cover.
(9) Remove lower left instrument panel silencer
and reinforcement. (10) Remove instrument panel center bezel.
(11) Remove floor console. Refer to Group 23,
Body. (12) Remove radio, A/C control, cigar lighter, and
message center/traveler. (13) Disconnect demister hoses.
(14) Remove instrument panel top cover (Fig. 51).
(15) Disconnect battery to assure no air bag sys-
tem fault codes are stored. (16) Remove cluster refer to Cluster Assembly.
(17) Remove radio and rear window defogger be-
zels. (18) Lower steering column.
(19) Loosen instrument panel pivot bolts.
(20) Remove screws which attach instrument panel
to windshield fence line. (21) Allow panel to roll down slightly and discon-
nect remaining electrical connections. (22) With the aid of a helper remove panel pivot
bolts and remove panel from vehicle. (23) For installation reverse above procedures.
INTERIOR LAMP REPLACEMENT
The dome, overhead console and door lamps, if
equipped operate when the doors are open or head-
lamp switch is placed in courtesy position. The front
header reading lamp operates only when the lamp
push buttons are ON.
DOME LAMP
Pry either the forward or rearward edge of the lens
away from the bezel and replace lamp.
FRONT HEADER READING LAMP
Pull lamp from headliner. Disconnect wiring and
replace lamp.
Fig. 50 A/C Control
Ä INSTRUMENT PANEL AND GAUGES 8E - 21

off, there should be continuity in the system. Start
the engine. With the engine running, the ohmmeter
should show no continuity. If the above results are
not obtained, replace the switch.
BRAKE SYSTEM WARNING LAMP
The brake warning lamp illuminates when parking
brake is applied with ignition key turned ON. The
same lamp will also illuminate should one of the two
service brake systems fail when brake pedal is ap-
plied. To test system turn ignition key ON, and ap-
ply parking brake. If lamp fails to light, inspect for a
burned out lamp, disconnected socket, a broken or
disconnected wire at switch. The lamp also lights
when the ignition switch is turned to START. To test service brake warning system, raise vehicle
on a hoist and open a wheel cylinder bleeder while a
helper depresses brake pedal and observes warning
light. If lamp fails to light, inspect for a burned out
lamp, disconnected socket, a broken or disconnected
wire at switch. If lamp is not burned out and wire continuity is
proven, replace brake warning switch in brake line
Tee fitting mounted on frame rail in engine compart-
ment below master cylinder (Fig.6 and 7). CAUTION: If wheel cylinder bleeder was opened
check master cylinder fluid level.
SEAT BELT WARNING LAMP
For testing of this system, refer to Group 8M, Re-
straint System.
MALFUNCTION INDICATOR (CHECK ENGINE) LAMP
For testing of this system, refer to the Powertrain
Diagnostic Test Procedure Manual.
MECHANICAL/ELECTRONIC CLUSTER REMOVAL
CLUSTER BEZELS REMOVAL
(1) Move gear selector to the low position.
(2) Remove five screws attaching upper bezel to in-
strument panel (Fig. 8). (3) Lift cluster bezel over steering wheel.
(4) Remove four screws attaching lower bezel to in-
strument panel. (5) Lift lower cluster bezel from instrument panel.
(6) For installation reverse above procedures.
CLUSTER MASK AND LENS REMOVAL
(1) Remove cluster bezel.
(2) Remove trip reset knob by pulling straight
back. (3) Remove five screws attaching mask and lens to
cluster. (4) For installation reverse above procedures.
Fig. 4 Combination Oil Sending Unit
Fig. 5 Combination Oil Sending Unit Test
Fig. 6 Brake Warning Lamp Switch
Ä INSTRUMENT PANEL AND GAUGES 8E - 25

CLUSTER ASSEMBLY
REMOVALÐCLUSTER WITH TRANSMISSION RANGE
INDICATOR FROM STEERING COLUMN (1) Disconnect battery to assure no air bag system
fault codes are stored. (2) Remove cluster bezel (Fig. 9).
Fig. 7 Brake System Warning Lamp Diagnosis
Fig. 8 Cluster Bezel
Fig. 9 Instrument panel Bezels
8E - 26 INSTRUMENT PANEL AND GAUGES Ä

(3) Remove lower steering column cover (Fig. 10
through 14).
(4) Place gear shift lever in neutral or park.
(5) Remove guide tube from behind fuse block and
disconnect cable eyelet from column actuating arm. (6) Release lock bar on column insert, squeeze legs
together and remove from column (Fig. 13). (7) Secure insert and cable guide out of the way.
(8) Remove the rear window defogger bezel and ra-
dio bezel. (9) Remove the upper steering column cover.
(10) Remove the four screws attaching cluster
housing to the base panel (Fig. 15). (11) Pull cluster rearward, reach behind cluster
and disconnect the two wiring harnesses. (12) Remove cluster assembly. INSTALLATION
(1) Connect wiring harnesses.
(2) Install cluster assembly while routing trans-
mission range indicator guide tube through access
hole in base panel (Fig. 10 through 14). Release
guide tube from behind fuse block. (3) Insert flange of column insert into column,
squeeze legs together with tabs under column jacket
and engage lock bar to secure insert (Fig. 13). (4) Hook cable eyelet to steering column actuator
check pointer, should indicate neutral. Do not kink
Fig. 10 Transmission Range Indicator
Fig. 11 Transmission Range Indicator Step 1
Fig. 12 Transmission Range Indicator Step 2
Fig. 13 Transmission Range Indicator Step 3
Ä INSTRUMENT PANEL AND GAUGES 8E - 27

or bind the transmission range indicator guide tube
and position guide tube in original location.(5) Adjust with tool if necessary to center pointer
on N (Neutral) and check in other gears (Fig. 14). (6) Install upper and lower steering column cover.
(7) Install the rear window defogger bezel and ra-
dio bezel. (8) Install cluster bezel.
(9) Reconnect battery.
REMOVALÐCLUSTER WITHOUT TRANSMISSION RANGE
INDICATOR FROM STEERING COLUMN
(1) Remove cluster bezel (Fig. 10).
(2) Remove four screws attaching cluster to base
panel. (3) Pull cluster rearward carefully, reach behind
and disconnect the two harness connectors. (4) Carefully rotate cluster and remove the two
transmission range indicator screws. (5) Remove cluster assembly.
(6) For installation reverse above procedures. (a) Do not kink guide tube when installing clus-
ter. (b) Replace guide tube behind fuse block.
GAUGES
It is not necessary to remove instrument cluster
from vehicle for gauge replacement. When removing
gauge assemblies from cluster, gauge must be pulled
straight out, not twisted, or damage to gauge pins
may result.
MULTIPLE GAUGE MALFUNCTION
If all the instrument cluster gauges appear to be
malfunctioning, remove the cluster assembly.
² Check for good pin contact
² Check for ignition voltage between the IGN cavity
D and ground.
² If there is ignition voltage
² Check for continuity between the wire harness
ground cavity G and ground.
² If there is continuity, replace the print circuit
board (Fig. 16).
GAUGE INOPERATIVE (FIG. 17 THROUGH 20)
(1) Remove gauge in question.
(2) With the ignition key ON, check for ignition
voltage at ignition pin of gauge. Check for ground at
ground pin of gauge. Refer to the individual gauge
circuit test for proper pin. (a) If no voltage or ground at gauge pins. Check
cavity D red cluster connector for ignition voltage
or cavity G for ground. (b) If no voltage or ground, repair as necessary.
Refer to 8W, Wiring Diagrams.
Fig. 15 Cluster With Mask and Lens Removed
Fig. 14 Transmission Range Indicator Step 4
8E - 28 INSTRUMENT PANEL AND GAUGES Ä

(4) Remove panel top cover by pushing forward
and prying up, using a straight edge to assist in the
removal. (5) Disconnect bulkhead connector at brace under
instrument panel at left side. (6) Remove glovebox/ash receiver module and right
instrument panel silencer. (7) Remove center panel support brace and air bag
diagnostic module assembly. (8) Disconnect wiring to airbag module.
(9) Remove upper and lower cluster bezels.
(10) Remove steering column cover.
(11) Remove steering column mounting nuts and
lower steering column. (12) Unhook shift indicator cable eyelet from steer-
ing column actuator. (13) Unlatch lock tab in shift indicator column in-
sert and squeeze legs together to remove from steer-
ing column. (14) Remove cluster assembly while guiding trans-
mission range indicator guide tube through access
hole in the base panel. (15) Remove instrument panel steering column
opening support/hood release handle assembly. (16) Remove two steering column upper studs and
loosen side cowl tie-down bolts. (17) Remove steering column tilt lever.
(18) Remove upper and lower lock housing shroud.
(19) Remove lower fixed shroud.
(20) Remove upper fixed shroud (snaps in place).
(21) Disconnect airbag pigtail, ignition switch and
halo light/key buzzer switch wiring. (22) Disconnect Multi-function switch by loosening
connector jack screw and pulling connector from
switch. (23) Disconnect airbag pigtail from wiring trough
housing by pulling two push fasteners. (24) Remove wiring trough from steering column.
(25) Remove defroster ducts.
(26) Remove five screws along fence line and roll
panel down, attach a hook to hold in position. (27) Open hood and remove plenum grill.
(28) Disconnect washer bottle, resistor block and
under hood lamp wiring. Washer bottle must be re-
moved to gain access. (29) Remove grommet and pull plenum wiring into
vehicle through plenum panel. (30) Disconnect right demister hose from instru-
ment panel. (31) Disconnect antenna cable.
(32) Disconnect right and left 25 way body wiring
connectors. (33) Disconnect A/C heater control cables, wiring
connectors and vacuum harness. (34) Remove right side panel ground wire.
(35) Disconnect body controller wiring.
(36) Remove instrument panel assembly from vehi-
cle. (37) For installation reverse above procedures.
INTERIOR LAMP REPLACEMENT
The reading, overhead console and door lamps op-
erate when the doors are open or headlamp switch is
placed in courtesy position. Front overhead lamps re-
fer to Group 8C, Overhead Console.
TRUNK LAMP
The lamp has easily accessible without removing
components.
DOOR LAMP
Pry along the forward edge of the lens and pivot
lens out of the door trim panel. Remove lamp. To re-
move lamp housing, remove door trim panel. Refer to
Group 23, Body. Disconnect all wiring. Remove
screws, if so equipped securing lamp housing to trim
panel, and replace housing.
CÐPILLAR READING/COURTESY LAMP
Pry along the rearward edge of the lamp and pivot
lamp out from quarter trim panel. Disconnect wiring
and remove lamp cover. Replace lamp. The lamp operates when the doors are open or the
headlamp switch is turned to the courtesy mode. The
lamp will function as a reading lamp when the doors
are closed and the button switch on the lamp is de-
pressed.
ROOF RAIL READING
Pry along the bottom edge of the lens and pivot
lens out. Replace lamp. To remove the lamp, remove
the screw which retains the coat hook. Remove the
garnish molding. Disconnect the wiring harness. Re-
move the two clips which retain the lamp to the
molding. Replace lamp. The lamp operates like the
C-pillar reading/courtesy lamp.
Ä INSTRUMENT PANEL AND GAUGES 8E - 41

ELECTRONIC DIGITAL CLOCK
The electronic digital clock is in the radio. The
clock and radio each use the display panel built into
the radio. A digital readout indicates the time in
hours and minutes whenever the ignition switch is in
the ON or ACC position. When the ignition switch is in the ON or OFF po-
sition, or when the radio frequency is being dis-
played, time keeping is accurately maintained. The procedure for setting the clock varies slightly
with each radio. The correct procedure is described
under the individual radio operating instructions re-
ferred to in the Owner's manual supplied with the
vehicle.
WARNING LAMPS
The AG & AJ Body instrument clusters have warn-
ing lamps or indicators with the electronic cluster for
six different systems. These include low oil pressure,
check gauges, brake system, air bag, seat belt, mal-
function indicator (check engine) lamp.
CLUSTER AND GAUGE SERVICE AND TESTING
CAUTION: Disconnect negative battery cable, in en-
gine compartment, before servicing instrument
panel. When power is required for test purposes,
reconnect battery cable for test only. Disconnect negative battery cable after test and be-
fore continuing service procedures. It is not necessary to remove instrument cluster
from vehicle for gauge replacement. Gauges must be pulled straight out, when remov-
ing or pins may be damaged.
SWITCH POD ASSEMBLY REMOVAL
(1) Disconnect negative battery cable.
(2) Pry up edge of panel vent grille, using a
straight flat edge tool to disengage clips, then re-
move grille (Fig. 4). (3) Remove two screws located under panel vent
grille. (4) Remove two screws underneath switch POD as-
sembly. (5) With tilt steering adjust steering wheel to the
lowest setting. (6) Pull switch module rearward to remove module
and disconnect all wire connections. (7) For Installation reverse above procedures.
Tighten all screws to 2 N Im (20 in. lbs.) torque.
MECHANICAL/ELECTRONIC CLUSTER REMOVAL
CLUSTER MASK AND LENS REMOVAL
(1) Remove switch pod assembly (Fig. 4).
(2) Remove tilt column lever if equipped.
(3) Remove steering column trim cover.
Fig. 4 Switch POD Assembly
Ä INSTRUMENT PANEL AND GAUGES 8E - 43