Vehicle make/model 2003 Chevy Trailblazer
Mileage = 159000
Engine size = V6
dash lights = No
codes = No
work done prior = Battery replacement
work done to repair = None
tech = JK
question = After having the battery replaced the dash vents will no
longer blow air.
JK:
I will need a little more info to be of some help.
Is there airflow from any vents (defrost, vent, lower)
Is this the automatic or manual a/c system?
Any more info will be helpful for me to assist you.
VISITOR:
Thanks for your quick response.
There is air flow from the defrost, lower and the back air vents. The dash vents seem to be the
only area without airflow.
Not sure what you mean by "the automatic or manual a/c". Sorry.
Thanks.
JK:
The automatic system controls air temp and delivery automatically, the manual system you must
control yourself. Sounds like you have a problem with the mode actuator. Sometimes this
happens after a battery is replaced, or after trying to jump start. Fist thing to do that usaually
works is perform a reset and calibration of the mode doors and control head.
With the key off, remove the HVACB, and the HCAV1 fuses from the rear fuse block under the
second row seats. Wait for at least 1 minute. Re-install fuses, start truck and do not touch a/c
control head for 2 minutes. Shut off truck, re-start and check for normal operation.
Back
Mileage = 159000
Engine size = V6
dash lights = No
codes = No
work done prior = Battery replacement
work done to repair = None
tech = JK
question = After having the battery replaced the dash vents will no
longer blow air.
JK:
I will need a little more info to be of some help.
Is there airflow from any vents (defrost, vent, lower)
Is this the automatic or manual a/c system?
Any more info will be helpful for me to assist you.
VISITOR:
Thanks for your quick response.
There is air flow from the defrost, lower and the back air vents. The dash vents seem to be the
only area without airflow.
Not sure what you mean by "the automatic or manual a/c". Sorry.
Thanks.
JK:
The automatic system controls air temp and delivery automatically, the manual system you must
control yourself. Sounds like you have a problem with the mode actuator. Sometimes this
happens after a battery is replaced, or after trying to jump start. Fist thing to do that usaually
works is perform a reset and calibration of the mode doors and control head.
With the key off, remove the HVACB, and the HCAV1 fuses from the rear fuse block under the
second row seats. Wait for at least 1 minute. Re-install fuses, start truck and do not touch a/c
control head for 2 minutes. Shut off truck, re-start and check for normal operation.
Back
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