Fuse; Overhead System-C-K Models; Rear Duct; Blower Motor Resistor - Chevrolet LIGHT DUTY TRUCK (SERIES 10-35) Service Manual

Replacement
1 . Disconnect the wiring harness at the relay.
2. Remove the relay to case attaching screws and
remove the relay.
3. Place the new relay in position and drive the
mounting screws.
4. Connect the relay wiring harness.

FUSE

A 25 amp fuse, located in the junction block protects
the entire air conditioning system except for the blower
circuit, the fuse for the blower circuit is located in the
electrical wiring between the junction block and the blower
relay (fig. IB-44).
O VERH EA D S Y S T E M -C -K M O DELS
The Overhead System is used in conjunction with the
Four-Season System. Since replacement of Four-Season
System components has been covered previously, only those
components peculiar to the Overhead System will be
covered in this section.

REAR DUCT

This duct covers the blower-evaporator assembly, at
the rear of the vehicle, and incorporates four adjustable air
outlets (fig. IB-45).
Replacement
1. Disconnect the battery ground cable.
2. Disconnect the drain tube from the rear duct.
3. Remove the screws securing the duct to the roof
Fig. 1 B-44~Engine C om partm ent W irin g Harness (C-K M odels)
AIR CONDITIONING
panel and rear header brackets.
4. Remove the duct.
5. To install, reverse Steps 1-4 above.

BLOWER MOTOR RESISTOR

The blower motor resistor is located on the cover side
of the Four-Season System blower-evaporator as shown in
Figure IB-46.
Fig. 1 B -4 5 -- R e a r D u c t (C-K a n d G O v e rh e a d S y s t e m )
1B-45
A
v i e w
LIG H T T R U C K SER V IC E MANUAL