Monte Carlo V6-3.4L VIN E (2000)
Air Register: Customer Interest
A/C - Horizontal Vent Louvers Loose or Inoperative
TECHNICAL
Bulletin No.: 06-01-39-010A
Date: June 26, 2008
Subject:
HVAC Horizontal Vent Louvers Loose or Inoperative (Reinstall Louver Tabs Into Thumbwheel/Deflector Housing)
Models:
2000-2009 Chevrolet Impala
2000-2007 Chevrolet Monte Carlo
Supercede:
This bulletin is being revised to add model years. Please discard Corporate Bulletin Number 06-01-39-010 (Section 01 - HVAC).
Condition
Some customers may comment that when rotating the thumbwheel on the deflector vent, the horizontal vent louvers will not open or close properly.
Cause
This condition may be caused by the horizontal vent louver tabs becoming disengaged from the retaining holes in the thumbwheel actuator or the
deflector housing. This causes the louvers to become inoperative or loose. The louvers are designed to move together in a uniform manner.
Correction
Shine a light into the deflector vent housing to determine if the inoperative louver still has two round tabs on one side and one round tab on the other side
of the louver. If you are having difficulty seeing the tabs, it may be necessary to remove the inoperative louver. If the tabs are broken or the louver is
missing, this bulletin does not apply. If all the round tabs are present, then proceed to reinstall the horizontal louver using the procedure below:
Example of Deflector Vent with Louver Removed (Two Round Tabs on End of Louver Shown)
Important:
Depending on which louver you are working on, it may be necessary to have the louvers fully open but be careful not to drop the louver into
the air duct. You may need a pair of needle-nose pliers to hold onto the louver when trying to position the two tabs into the thumbwheel and
the housing pivot hole.
1.
Start with the side thumbwheel in the down position and the horizontal louvers in the near closed position.
2.
Install the two tabs of the louver into the thumbwheel actuator hole and the deflector housing pivot hole.
3.
Bow the louver you are trying to reinstall outward towards you.
4.
With the louver bowed, install the single tab into the opposite deflector housing pivot hole.
5.
The louver may show a slight bow after installing. It may be necessary to straighten the louver by slightly bending the louver in the opposite
position of the bow.
6.
Verify the proper operation of the vent deflector louvers by using the thumbwheel control.
