1967 CHEVROLET CAMARO ECU

STEERING 9-16

new upper shift lever spring into bowl pocket. Be

sure spring is seated in bowl pocket. Install bowl

washer (fig. 30).

12.
Insert the upper bearing housing assembly and the

turn signal switch assembly into the cover, feeding

the signal switch wires through the back of the

cover.

13.
Align the signal switch and bearing housing holes

with the holes in the cover. Install three mounting

screws through the holes.

14.
Slide three springs onto screw ends at rear of cover

and place lockplate in position over screws and

springs. Turn screws three turns into lockplate.

15.
Feed switch wire through the shift lever bowl and

place upper end assembly on top of bowl.

16.
Place the shift lever bowl and signal switch cover

assembly on top of jacket, aligning the tangs on the

I.D. of the lockplate with the slots in the top of the

jacket. Shift tube key should align in bowl keyway as

bowl is pushed ono

17.
Lock upper end assembly into position by pushing

down on the cover assembly and rotating assembly

fully clockwise. Tangs of lock plate must engage

slots in jacket.

18.
Tighten three turn signal switch mounting screws in

a gradual criss-cross sequence to avoid cocking the

lockplate.

19.
Slide wave washer and thrust washer over steering

shaft and against upper bearing housing.

20.
Start "C" retaining ring over steering shaft taper.

Complete installation of. retaining ring using snap

ring installer J-22659 as shown in Figure 28. Be

sure "C" retaining ring is completely seated into

steering shaft groove.

21.
-Place turn signal switch lever in position and secure

with screw. Screw hazard warning knob into position.

22.
Remove column from vise and pull wires flat against

jacket. Snap wire protector into place.

23.
If mesh cover was removed, wrap mesh cover around

jacket and secure with electricians or friction tape.

24.
Slide cancelling cam and upper bearing preload

spring onto end of shaft.

Disassembly—Column Mounted Power glide Lever or

Floor Shift Column (Fig. 32)

NOTE: In this procedure, automatic refers to a

column with a column mounted, Powerglide shift-

ing lever. Floor shift refers to a column taken

from a vehicle with conventional or Powerglide

floor shift controls.

1.
Unsnap and remove wiring protector and wiring clip.

CAUTION: Secure column in bench vise for

service one of two ways shown in Figure 26.

Clamping column in vise in any other manner

will damage the column. If support fixture

J^22573 is not used, frequently check position of

column in vise jaws to insure column is not

working free of jaws.

2.
Clamp column in a bench vise as shown in Figure 26.

3.
Slide upper bearing preload spring and cancelling

cam off end of shaft.

4.
On automatic columns removed from Chevy II or

Camaro, remove screws securing dial retainer to

column and remove retainer and dial (fig. 33). Slide
Fig.
33—Powerglide Dial Indicator Assembly—Chevy II

and Camaro

indicator out of shift bowl and remove indicator. Re-

move cap and bulb from turn signal switch housing.

5.
Remove turn signal lever retaining screw and re-

move lever. Push hazard warning knob in; unscrew

and remove knob.

6. On automatic columns, drive'out shift control lever

retaining pin and remove shift lever.

7.
Remove "C" retaining ring from upper steering

shaft using snap ring remover Tool J-22569 (fig. 28).

8. Slide thrust washer and wave washer off upper steer-

ing shaft (fig. 28).

9. Loosen three turn signal switch mounting screws

until the switch cover can be rotated counterclock-

wise.
It may be necessary to push on top of screws

to loosen the cover assembly. ,

NOTE: Do not remove the three turn signal

switch screws completely unless it is necessary

to replace the turn signal switch, lockplate, or

upper bearing housing and bearing.

10.
Rotate turn signal switch cover counterclockwise

and pull cover off top of jacket (fig. 29).

11.
If necessary, pry upper shift lever spring (fig. 30)

from bowl and discard spring.

12.
Remove shift lever bowl from top of jacket.

13.
If necessary to service components within the signal

switch cover, remove the three signal switch covers,

remove the three signal switch mounting screws

completely from engagement with the lockplate. Use

care to control three springs as screws are removed.

14.
Remove turn signal switch and upper bearing housing

assembly from cover.

15.
Carefully pull steering shaft assembly from bottom

of column.

16.
Remove securing back-up lamp/neutral start switch

to column, if so equipped, and remove switch. Retain

these mounting nuts.

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-17

STEERING SHAFT

SHIFT TUBE

Fig.
34—Shift Tube and Steering Shaft

17.
Remove bearing adapter clip (fig. 34).

18.
Remove bearing adapter with bearing, and shift

tube spring. On automatic columns, remove spring

thrust washer (fig. 32).

19.
U necessary, press bearing out of bearing adapter.

20.
Withdraw shift tube assembly from lower end.

21.
Remove the lower bowl bearing from the top end of

the jacket by inserting a suitable length of pipe or

wooden rod through the lower end and tapping the

bearing out. This bearing may be reused in this

column or discarded. It may not be used as a re-

placement part in another column.

22.
Slide steering shaft lower bearing spring, plunger,/

tolerance
*
ring and sleeve assembly, and thrust

washer off upper end of shaft.

23.
If necessary, unwrap mesh cover from jacket.

24.
Remove flange clamp bolt and flange at bottom of

steering shaft, if so equipped.

Assembly—Column Mounted Powerglide Lever or

Floor Shift Column (Fig. 32)

1.
Apply a thin coating of lithium soap grease to all

friction surfaces.

2.
If lower shift bowl bearing was removed from jacket,

press bowl bearing into top end of jacket.

3.
If lower bearing was removed from adapter, press

lower bearing into adapter.

4.
On automatic columns, install spring thrust washer

on end of shift tube against lower shift lever.

5. Install shift tube spring and adapter on end of shift

tube and secure with bearing adapter clip (fig. 34).

6. Slide shift- tube into position through lower end of

jacket.

7. Attach the back-up lamp/neutral start switch, if so

equipped, to the jacket using the same nuts removed

during disassembly. Install these nuts loosely; the

switch must be adjusted after column is installed in

the vehicle.

NOTE:
If the steering shaft assembly, mast

jacket, upper bearing housing assembly, or lower

bearing assembly has been replaced, the com-

ponent stack-up in the column will be different.

Replace the lower plastic injected tolerance ring

and bearing preload spring with the necessary

tolerance ring kit as described below.

8. Slide thrust washer, tolerance ring kit, plunger, and

kit spring into position from top of steering shaft.

9. Slide steering shaft assembly into position through

lower end of jacket.

10.
On automatic columns, if upper shift lever spring

was removed, press a new upper shift lever spring

into shift lever bowl. Be sure spring is seated in

bowl pocket.
Fig.
35—Tolerance, Ring Kit—First Adjustment

11.
Insert the upper bearing housing assembly and the

turn signal switch assembly into the cover, feeding

the signal switch wires through the back of the cover.

12.
Align the signal switch and bearing housing holes

with the holes in the cover. Install three mounting

screws through the holes.

13.
Slide three springs onto screw ends at rear of cover

and place lockplate in position over screws and

springs. Turn screws three turns into lockplate.

14.
Feed switch wire through the shift lever bowl and

place upper end assembly on top of bowl.

15.
Place the shift lever bowl and signal switch cover

assembly on top of jacket, aligning the tangs on the

RING KIT

OUTER SECTION

Fig.
36—Tolerance Ring Kit—Final Adjustment

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-19

20.

21.

22.

23.

24.

25.

26.

27.

28.
Start "C" retaining ring over steering shaft taper.

Complete installation of retaining ring using snap

ring installer J-22659 as shown in Figure 28. Be

sure "C" retaining ring is completely seated into

steering shaft groove.

Remove any remaining looseness from internal col-

umn stack-up by unscrewing inner tolerance kit ring

section; then screw inner kit ring section back in

1/8 to 1/4 turn (fig. 36).

Touch the outer surface of the tolerance ring kit
.at

several locations with a hot soldering iron to melt

the threads of the inner and outer ring sections

together.

Place turn signal switch lever in position and se-

cure with screw. Screw hazard warning knob into

position.

If column is automatic and to be installed in a Chevy

II or Camaro, install the bulb and cap (fig. 33). Slide

the indicator into the 'shift bowl. Install dial and re-

tainer with screws removed during disassembly.

Install flange and clamp bolt at bottom of steering

shaft, if so equipped.

Remove column from vise and pull wires flat against

bottom of jacket. Snap wire protector and clip into

place.

If mesh cover was removed, wrap mesh cover around

jacket and secure with electricians or friction tape

/**% • *t 1*1* i '% •< n

Slide cancelling cam and

spring onto end of shaft.
upper bearing preload

Disassembly-Til* Column (Fig. 37)

NOTE:
This procedure covers disassembly and

assembly instructions for all tilt columns. Auto-

matic refers to a tilt column with a column

mounted, Powerglide shifting lever. Floor shift

. refers to' a tilt column taken from a vehicle with

conventional or Powerglide floor shift controls.

1.
Unsnap and remove wiring protector.

CAUTION: Secure column in bench vise for

service one of two ways shown in Figure 26.

Clamping column in vise in any other manner

will damage the column. If support fixture

J-22573 is not used, frequently check position

of column in vise jaws to insure column is not

working free of jawsT

2.
Clamp column in a bench vise as shown in Figure 26.

3.
Slide upper bearing preload spring and cancelling

cam off end of shaft.

Fig,
38—Removing Turn Signal Cover Using Tools

J-21486 and J-6585-1
Fig.
39—Removing Steering Shaft Bearing Lock Nut

Using Lock Nut Wrench j-22599

4.
On automatic columns removed from a Camaro, re-

move screws securing dial retainer to column and

remove retainer and dial (fig. 33). Slide pointer out

of bowl and remove pointer. Remove cap and bulb

from turn signal switch housing.

5. Remove turn signal lever retaining screw and re-

move lever. Unscrew and remove tilt release lever.

Push hazard warning knob in, unscrew and remove

knob.

6. On Automatic columns, drive out shift control lever

retaining pin and remove shift lever.

7. Assemble slide hammer Tool J-6585-1 to turn signal

cover remover Tool J-21486. Place cover remover

over turn signal cover, tighten clamp, and pull

cover from end of column with slide hammer (fig.

38).

8. Remove three turn signal switch mounting screws.

Note short length of secure removed from top

position.

9. Lift signal switch assembly off bearing housing and

allow to hang by the wires. On some columns, the

switch and wires can be removed at this time; re-

move switch and wires if possible. If switch and

wires cannot be removed, allow assembly to hang

by wires.

10.
Install tilt release lever and place column in full up

position. Remove tilt spring retainer using screw-

driver blade that just fits into slot opening. Insert

screwdriver in slot, press in approximately 3/16-

inch;
rotate retainer approximately 1/8 turn clock-

wise until ears align with grooves in housing, and

remove retainer and spring. Use care when remov-

ing spring, it is tightly compressed.

11.
Remove steering shaft bearing lock nut using lock nut

wrench Tool J-22599 (fig. 39). Remove inner race

•seat and inner "race.

12.
Remove two pivot pins from bearing housing using

pivot pin remover Tool J-21854 (fig. 40).

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-20

Fig.
40-Removing Pivot Pins Using Pivot Pin Removal Tool J-21854

13.
Pull up on tilt release lever to disengage lock shoes.

Remove bearing housing and hang with signal switch,

if present, until further disassembly. If signal switch

and wires were removed earlier, bearing housing

may be completely removed. Remove tilt release

lever.

14.
Remove steering shaft flange bolt and flange from

lower end of shaft.

15.
Remove retaining ring, washers, sleeve and plunger

assembly and spring from lower end of shaft.

16.
Slide steering shaft out of top end of jacket.

17.
If necessary to disassemble steering shaft, proceed

as follows:

a. Slide bearing and race off top of shaft.

b.
Turn upper shaft slightly from center line of

lower shaft.

c. Using a narrow blade screwdriver, work pre-

load spring out of upper shaft and remove spring

(fig. 41).

d. Turn upper shaft 90° from center line of lower

shaft and remove shaft.
e. Rotate centering spheres and remove spheres and

wave washer from lower shaft.

18.
Remove screws securing the support assembly to the

lockpjate and mast jacket and remove support.

19.
Remove shift tube retaining ring with a screwdriver.

Remove thrust washer (fig. 42).

20.
Remove lower bearing adapter from bottom of shift

tube by depressing plastic fingers, one at a time, and

pulling adapter out.

21.
Remove nuts securing back-up lamp, neutral start

switch to column, if so equipped, and remove switch.

Retain these mounting nuts.

22.
Remove shift tube assembly from bowl using shift

tube remover Tool J- 22551 (fig. 43). Insert the

hooked end of the tool into the notch of the shift tube

below the bowl key. Pilot sleeve into upper end of

shift tube. Force shift tube out of bowl by turning

SHIFT TUB

RETAINING RING

Fig.
41—Removing'Preload Spring from Centering Spheres
Fig. 42—Shift Tube Retaining Ring and Lower Bushing

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-21

Fig.
43-Removing Shift Tube Using Shift Tube Remover J-22551

nut on tool. If the shift tube is not completely free

when tool is removed, complete removal by hand.

As shift tube is removed from automatic columns,

use care as lower shift lever is lowered through bot-

tom of mast jacket. Do not hammer or force shift

tube during removal from mast jacket.

23.
Remove lockplate (fig. 44) by sliding out of jacket

notches. Tip plate down toward bowl hub and slide

out from under top edge of jacket opening. Remove

wave washer.

24.
Remove bowl from mast jacket. Remove signal

switch and bearing housing if not previously

removed.

25.
On automatic column, remove shift lever spring from

bowl by winding spring up with pliers and pulling out.

26.
On automatic column, remove screws securing shift

stop plate to support, if necessary.

27.
Remove upper bearing from upper bearing housing, if

necessary.

Fig.
44—Lockplate Installed
28.
Remove lower bearing from lower bearing adapter,

if necessary.

29.
Service lock shoes, release springs, or shoe release

if necessary, as follows:

a. Drive the lock shoe retaining pin out of the hous-

ing using release lever pivot remover Tool

J-22635 (fig. 45, View A).

b.
Hold the shoe springs in compression by rocking

lock shoes in with a wedge to relieve the load on

the shoe release lever; drive out shoe release

lever pin using Tool J-22635 (fig. 45, View B).

Remove shoe release lever and release lever

spring.

c. Remove lock shoes and lock shoe springs.

30.
If necessary, remove seals from lower end of shift-

tube and discard seals.

31.
Unwrap mesh cover from jacket, if necessary.

Assembly-Tilt Column (Fig. 37)

1.
Apply a thin coating of lithium soap grease to all

friction surfaces.

2.
Assemble bearing housing components as follows:

NOTE:
With tilt lever opening on the left side,

shoes facing up, position the four slot shoe on

the left.

a. Place lock shoe springs and lock shoes in position

in bearing housing. Line up shoes for pin instal-

lation using Tool J-22635 (fig. 45). Install shoe

pin flush with housing face on shoe release lever

pin side.

b.
Hold the shoe springs in compression by rocking

lock shoes in. Insert pin through release lever

and install pin and lever.

3.
If lower bearing was removed, press lower bearing

into adapter.

4.
If upper bearing was removed, press upper bearing

into race on top of bearing housing.

5. On automatic columns, install stop plate on support

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-23

Fig.
47—I retaliating Spherical Joint Spring

upper shaft should be on the same side as the

flat on the lower shaft.

d. Install the upper shaft with spheres into the lower

shaft.

e. Insert the joint preload spring through the

spheres into the lower shaft. Using the upper

shaft to hold the spring in place, carefully feed

the spring into the upper shaft joint with a narrow

bladed screwdriver (fig. 47).

17.
Slide the race and bearing over the top of steering

shaft and install shaft in shift tube from upper end.

Carefully guide shaft through shift tube, taking care

not to tear or push out foam seal cemented inside

lower end of shift tube.

18.
Install tilt control lever and, holding lock shoes in

disengaged position, assemble bearing housing on the

shaft over the support until pivot pin holes line up.

19.
Secure bearing housing in position by pressing in the

pivot pins.

20.
Place housing in full up position and install tilt

spring, tapered end first. Install tilt spring retainer

using screwdriver in retainer slot.

21.
Install turn signal switch with three mounting

screws. Place short length screw in top position

above lock shoes.

NOTE:
If the steering shaft, adapter, mast

jacket, support or bearing housing has been,

replaced, the component stack-up in the column

will be different. Replace the lower plastic in-

jected tolerance ring and the lower bearing pre-

load spring with the necessary tolerance ring

kit as described below.

22.
Slide kit spring, tolerance ring kit, washers, and

retaining ring on steering shaft from lower end.

Seat retaining ring in steering shaft groove.

23.
Screw tolerance ring kit sections together leaving

enough inner edge exposed for later adjustment as

shown in Figure 35.

24.
Install inner race, inner race seat, and bearing lock-

nut on end of steering shaft, using locknut wrench

ToolJ-22599 (fig. 39).

25.
Remove any remaining looseness from internal col-
umn stack-up by unscrewing inner tolerance kit ring

section; then screw inner ring section back in 1/8 to

1/4 turn (fig. 36).

26.
Tighten bearing locknut installed in Step 24 above

until the torque required to rotate the steering shaft,

with the housing in the mid position, is 23 lb. in.

27.
Touch the outer surface of the tolerance ring kit at

several locations with a hot soldering iron to melt

the threads of the inner and outer sections together.

28.
Check to insure hazard warning switch is pushed in.

Remove tilt release control lever and install turn

signal switch cover using turn signal cover installer

Tool J-21853 (fig. 48). On automatic column, be sure

key in the cover is aligned with keyway in bearing

housing.

29.
Place turn signal control lever in position and se-

cure with mounting screw. Screw tilt release control

lever in. Screw hazard warning knob in.

30.
On automatic columns, place transmission shift con-

trol lever in position and insert lever retaining pin.

31.
On automatic columns to be installed in a Camaro,

insert the bulb and cap into the turn signal switch

housing (fig. 33). Slide pointer into position in bowl.

Install dial and dial retainer with mounting screws

removed during disassembly.

32.
Install steering shaft flange on bottom of shaft and

secure with flange bolt.

33.
Remove column from vise. Pull wires back against

column leaving a small amount of slack. Snap wiring

protector into position. Be sure enough slack re-

mains in wires to allow column head to tilt to full

up position.

34.
If mesh cover was removed, wrap mesh cover around

mesh portion of jacket and secure with friction or

electricians tape.

35.
Slide cancelling cam and cancelling cam spring on

upper end of shaft.

Disassembly—Standard Corvette Column (Fig. 49)

1.
Place column on a suitable work bench.

2.
Remove upper bearing preload spring and cancelling

cam from end of column.

3.
Slide escutcheon clear of wiring protector and re-

move protector.

4.
Remove turn signal lever retaining screw and re-

move lever. Push hazard warning knob in; unscrew

and remove knob.

Fig.
48—Installing Turn Signal Switch Cover Using

Signal Switch Installer Tool J-21853

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-25

\
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SIGNAL SWITCH

^ ^-BEARING

UPPER FLANGE^
HOUSING

COVER

»,

ESCUTCHEON
"^^^^^fr

Fig.
51-Assembling Upper End

13.
If necessary, remove two seals from lower end I.D.

of jacket.

14.
If necessary, unwrap mesh cover from jacket.

Assembly—Standard Corvette Column (Fig. 49)
RING KIT V

INNER SEaiON-n 1

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3

^^•-
'^p|§ • • ; ''•'- "; ' '-'""••-•• ••'•. " . ; /

W- - V: -: ';'^ /

W ^-RI^G KIT

OUTER SECTION

Fig.
52—Tolerance Ring Kit—First Adjustment

14.
Touch the outer surface of the tolerance ring kit at

several locations with a hot soldering iron to melt

the threads of the inner and outer ring sections

together.

1.

4.

5.

6.
of lithium soap grease to all 15. Place turn signal switch lever in position and secure

10.

11.

12.

13.
Apply a thin coating

friction surfaces.

If seals were removed from lower end I.D. of jacket,

cement two new seals into position.

If lower bearing assembly was removed, press new

lower bearing into position at lower end of mast

jacket.

Slide thrust washer, tolerance ring kit, plunger, and

new kit spring into position from top of steering

shaft.

Install flange and flange bolt on lower end of steering

shaft.

Carefully slide steering shaft into lower end of mast

jacket.

Assemble upper bearing housing and turn signal

switch into cover and secure entire assembly to mast

jacket upper flange with three signal switch mounting

screws as shown in Figure 51.

Feed turn signal switch wires through escutcheon.

Slide escutcheon and upper assembly onto upper end

of column. Secure upper flange to column with three

mounting bolts.

Screw tolerance ring kit sections together leaving

enough inner edge exposed for later adjustment (fig.

52).

Slide wave washer, thrust washer, and "C" retaining

ring loosely into place at top of shaft.

Complete installation of "C" retaining ring using

snap ring installer Tool J-22659 as shown in Figure

50.
Be sure retaining ring is completely seated into

steering shaft groove.

Remove any remaining looseness from internal col-

umn stack-up by unscrewing inner tolerance ring kit

section; then screw inner kit section back in 1/8 to

1/4 turn. See Figure 53.
with screw. Screw hazard warning knob into position.

16.
Pull signal switch wires flat against column, install

wiring protector, and slide escutcheon into position.

17.
If mesh cover was removed, wrap mesh cover around

mesh portion of mast jacket and secure with friction

or electricians tape.

18.
Install spring and cancelling cam on end of shaft.

RING KIT

OUTER SECTION

fig.
53-Tolerance Ring Kit-Final Adjustment

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-27

Fig.
55— Removing Lower Bearing Retaining Ring

bearing assembly from lower end of shaft.

9. Push upper steering shaft section into lower section

until spring pin is visible at pin access hole in lower

section. Drive out spring pin.

10.
Remove upper shaft section from lower section. If

necessary, replace locking wedge and locking rod at

this time.

11.
Remove bumper key strap (fig. 56). Remove keys and

bumper assembly.

12.
Remove screws securing bottom of wiring protector

to column.

13.
Slide inner jacket section, switch cover, switch,

upper bearing housing, wiring protector, and es-

cutcheon off top end of jacket.

14.
If necessary, remove three turn signal switch mount-

ing screws and remove switch and upper bearing

housing.

15.
If necessary, remove seals from I.D. of mast jacket.

16.
If necessary, unwrap mesh cover from jacket.

Assembly—Corvette Telescoping Column (Fig. 54)

1.
Apply a thin coating of lithium soap grease to all

friction surfaces.

2.
If seals were removed from I.D. of mast jacket,

cement new seals in positions where old seals were

removed.

3.
Place locking wedge and locking rod into upper shaft

and slide upper shaft into lower shaft.

4.
Align upper and lower shafts and insert spring pin

into access hole.

5. Install bearing, packing, spring, washer, and retain-

ing ring on bottom of steering shaft. Seat the re-

taining ring into the steering shaft groove with a

screwdriver.

6. Carefully slide steering shaft into lower end of mast

jacket.

7. Install bearing retainer over lower end of shaft and

lower end of jacket. Secure retainer with three

screws.

8. Install flange and flange bolt on lower end of steering

shaft.

9. Feed wires of turn signal switch through turn signal

switch cover and escutcheon, and place switch and

upper bearing housing in cover. Secure switch to

cover with three mounting screws.
10.
Place wiring protector inside escutcheon.

11.
Start escutcheon and wiring protector, with signal

switch wires, over end of outer jacket.

12.
Slide inner jacket section into outer jacket section.

13.
Secure switch cover to flange of inner jacket section

by tightening the signal switch mounting screws.

14.
Secure the bottom of the wiring protector to the col-

umn with two screws.

15.
Assemble keys and bumper and place the entire as-

sembly in position in the jacket. Install bumper key

strap.

16.
Slide wave washer, thrust washer, and upper retain-

ing ring into place at top of shaft. Seat retaining ring

in steering shaft groove with a screwdriver.

17.
Place turn signal switch lever in position and secure

with screw. Screw hazard warning knob into position.

18.
If mesh cover was removed, wrap mesh cover around

mesh section of jacket and secure with electricians

or friction tape.

19.
Slide cancelling cam and upper bearing preload

spring over top end of shaft.

Installation

NOTE:
Before placing column in position in

vehicle, refer to figures 19 through 23 and slide

dash panel seals, covers, plates, and clamps

loosely into position on column for later

installation.

1.
Move front seat back as far as possible to provide

Fig.
56—Removing Bumper Key Strap

CHEVROLET CHASSIS SERVICE MANUAL