G 20 3/4 Ton Van V8-305 5.0L VIN H 4-bbl (1984)
Blower Motor: Customer Interest
A/C - Updated Wiring & Description Rear A/C Blower
85-32
1B (Ia)
Feb., 1985
Subject:
FRONT HEATER AND AIR CONDITIONING BLOWER RUNS CONTINUOUSLY
Model and Year:
1984-85 "G" VANS EQUIPPED WITH C69 REAR A/C
TO:
ALL CHEVROLET DEALERS
Some 1984 and 1985 "G" vans equipped with C69 rear air conditioning are wired so the front heater and air conditioning blower will run continuously
when the ignition switch is in the RUN position. This condition is normal, even though the heat and A/C selector switch may be in the OFF position. This
is necessary to keep air flowing over the rear A/C blower control resistor coils.
Vehicles built from February, 1984 through early 1985 model production are wired in this manner.
Figure #1 shows the wiring diagram for these vehicles only. The wiring diagrams, as published in the Light Duty Service Manuals, are correct for all
other "G" vans with rear air conditioning.
If a customer comments that the front heater and air conditioning blower runs continuously, the splice may be removed. However, the splice can only be
removed if the existing A/C rear blower speed control resistor is replaced with a part number 15591188, resistor.
FIGURE #1
