Blower Motor Resistor Replacement; Blower Motor Relay Replacement; Fuse Replacement; Vacuum Line Replacement - Engine Compartment - GMC G Service Manual

Cable-Temperature Control
240.
241. Bolt
242. Retainer
Heater Control Assembly
243.
244. Cam
M Remove or Disconnect (Figures 47, 48 and
1. Vacuum lines at the tank.
2. Tank-to-dash panel screws.
3. Tank.
M Install or Connect (Figures 47, 48,and 49)
1. Tank.
2. Tank-to-dash panel screws.
3. Vacuum lines to the tank.
224
224. Vacuum Control Hose
Figure 47 — Vacuum Hose — 4.8L Engine
BLOWER MOTOR RESISTOR
REPLACEMENT
The blower motor resistor is located in the blower side of
the blower-evaporator case.
B
Remove or Disconnect (Figure 37)
. Wiring harness connector from the resistor.
1
Figure 46 — Temperature Door Cable Adjustment
L00210
AIR CONDITIONING 1B-43
2. Resistor-to-case attaching screws.
3. Resistor (3).
H Install or Connect (Figure 37)
1. Resistor (3).
2. Screws.
3. Wiring harness.
BLOWER MOTOR RELAY
REPLACEMENT
The blower motor relay is located on the blower side of
the blower-evaporator case.
H Remove or Disconnect (Figure 37)
1. Wiring harness at the relay.
2. Attaching screws.
3. Relay (16).
H Install or Connect (Figure 37)
1. Relay (16).
2. Mounting screws.
3. Wiring harness.

FUSE REPLACEMENT

A 25-amp fuse, located in the fuse block, protects the
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.
VACUUM LINE REPLACEMENT —
ENGINE COMPARTMENT
Rubber vacuum hoses can be repaired by cutting the
hose at a leak, inserting a connector and pushing the hoses
onto the connector.
If the entire hose needs replacing, pull the hose from
each connector and thread a new hose into place. Follow
the routing of the original hose.
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