Control Assembly R E P La Ce M E N; Temperature Door Cable A Djustm E N; Blower Switch R E P Lace M E N; Resistor R E P La C E M E N - GMC 1986 P-Truck Service Manual

1B-58 AIR CONDITIONING
4. Blower motor lead wire.
5. Motor and wheel assembly (433).
• Five blower motor mounting screws.
• Pry gently on the blower flange if the sealer
acts as an adhesive.
6. Blower wheel to motor shaft nut.
7. Separate the wheel and motor assemblies.
Install or Connect (figure 54)
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1. Wheel to the blower motor.
• Assemble the blower wheel to the motor
with the open end of the wheel away from
the blower motor.
2. Blower wheel to the motor shaft nut.
3. Blower wheel and motor assembly to the vehicle.
• If the motor mounting flange sealer has
hardened or is not intact, remove the old
sealer and apply a bead of sealer to the
mounting flange.
• Check blower operations: blower wheel
should rotate with no interference.
4. Blower motor lead wire.
5. Coolant recovery tank and power antenna.
6. Battery ground cable.
CONTROL ASSEMBLY
REPLACEMENT
Remove or Disconnect (Figures 56, 57, 58 and
59)
1. Battery ground cable.
2. Headlamp switch control knob.
3. Instrument panel bezel.
4. Control.
• Screws.
• Temperature cable eyelet clip and retainer
(499).
• Control lower right mounting tab through
dash opening.
• Upper tab.
• Lower right tab.
5. Electrical harness.
6. Vacuum harness (506).
7. Control assembly.
Install or Connect (Figures 56, 57, 58 and 59)
1. Electrical and vacuum connection to the control.
2. Control into the opening in the dash panel.
3. Temperature cable.
Adjust
• Temperature door operation. Refer to
" Temperature Door Cable Adjustment."
4. Instrument panel bezel.
5. Headlmap switch control knob.
6. Battery ground cable.
TEMPERATURE DOOR
CABLE ADJUSTMENT
J P Adjust (Figure 57)
1. Remove instrument panel compartment and door.
2. Loosen the cable attaching screw at the selector
duct assembly.
• Make sure the cable is installed in the
bracket on the selector duct assembly.
3. Place the temperature lever in full HOT position
and hold while tightening the cable attaching
screw.
4. Install instrument panel compartment and door.
BLOWER SWITCH
REPLACEMENT
Remove or Disconnect (Figure 60)
1. Battery ground cable.
2. Left-foot cooler outlet assembly at the instrument
panel attachment.
3. Electrical harness.
4. Mounting screws.
5. Control assembly (491).
6. Switch (493).
Install or Connect (Figure 60)
1. New switch.
• Mounting screws.
2. Electrical harness.
3. Control Assembly (491).
4. Left-foot cooler outlet assembly.
5. Battery ground cable.
RESISTOR REPLACEMENT
Remove or Disconnect (Figure 61)
1. Electrical harness.
2. Resistor mounting screws.
3. Resistor (510).
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install or Connect (Figure 61)
1. Resistor (510).
• Screws.
2. Electrical harness.