Chevrolet 1977 light duty truck, Service Manual

Page: 786 / 861

COMPONENT PART
REPLACEMENT
SEALED BEAM U N IT
Replacement (Figs. 8-3 and 8-4)
1. Remove bezel retain in g screws and bezel.
2.
Remove retain in g ring.
N O T E : Do not disturb adjusting screw setting.
3. Disconnect w iring harness connector located at
rear of' unit in engine c o m p a rtm e n t and remove sealed
b eam unit.
4. Attach w iring harness connector to unit.
5. Position new sealed b eam unit in m ounting ring
and install retaining ring.
N O T E : T he n u m b er molded into lens face must be
at top.
6. Install retain in g ring then check operation o f
unit and install bezel.
P A R K IN G LA M P BULB
Replacement (Figs. 8-3 and 8-4)
1. Remove lens retaining screws and remove lens
I'rom the housing.
2. Replace bulb and check lamp operation.
3. Install lens and re tain in g scrws.
P A R K IN G LA M P H O U S IN G
C-K M odels
Replacement (Fig. 8-3)
1. Remove park in g lam p lens screw's and remove
the lens.
2. Remove lam p housing retaining screws and pull
housing forward.
3. Disconnect park in g lam p w iring harness from
housing by rotatin g bulb socket counterclockwise.
4. Connect w iring harness to new housing by
in serting bulb socket into housing and rotating clockwise.
5. Install bulb if removed during disassembly.
Install lens and retaining screws.
G M odels
Replacement (Fig. 8-4)
Right Side
1. Remove both h e a d la m p bezels.
2. Rem ove both p ark in g lam p lens.
3. Remove grille.
4. Remove battery and battery box.
5. D isconnect wiring harness at connector.
6. Rem ove housing stud nuts and remove housing
with pigtail.
7. To install, reverse removal steps.
Left Side
1. Remove two screws and p ark in g lam p lens.
2. Disconnect wiring harness at connector.
3. Remove housing stud nuts and remove housing
with pigtail.
4. To install, reverse removal steps.
FR O N T SIDE M A R K ER LA M P BULB A N D /
OR H O U S IN G
All Models
Replacement
NOTE: For housing replacem ent follow procedure
for the right side bulb replacem ent below.
1. Left Side
- Raise hood.
Right Side
- Remove lam p assembly retaining
screws and pull outward on assembly.
2.
Twist wiring harness socket 90 counterclockwise
and remove harness and bulb from housing.
3. Replace bulb and check lam p operation.
4. Insert bulb into housing, press in on harness
socket and twist 90 clockwise. Check that socket is
securely attached.
5.
Left S ide-
Lower hood.
Right Side - Install housing in opening and install
retaining screws.
REAR SIDE M AR KER LA M P BULB
A N D /O R H O U S IN G
C-K 03 models with E62 and G Models
Replacement
Same as Right Front Side M a rk e r L a m p Bulb a n d /
or Housing Replacement - All Vehicles.
NOTE: Bulb on G Models without interior trim
may be removed from inside the vehicle.
C-K 14, 0 3 and 6 3 with E63, and 0 6
Models
Replacement
1. Remove lens to housing four screws.
2. Replace bulb and check operation.
3. Position lens and install four attaching screws.
P latform and S take Rack M odels (E 5 6 )
Exploded view o f the different re a r lighting
arrangem ents are shown in Figures 8-7 and 8-8. The
bulbs m ay be replaced by removing the lam p lens
attaching screws and lam p lens. T he lamp housings may