Impala V8-5.3L (2008)
Cowl: All Technical Service Bulletins
A/C - Windows Fog Up With Blower Motor ON
TECHNICAL
Bulletin No.: 08-08-64-014
Date: August 22, 2008
Subject:
Windows Fog Up When HVAC Blower Is Turned Up (Install Water Preventative Filter In Plenum Area)
Models:
2006-2008 Chevrolet Impala
Built Prior to 5/1/08
Condition
Some customers may comment that the windows fog up when the HVAC blower speed is increased.
Cause
This condition may be caused by water from the drain hole under the plenum area getting drawn into the HVAC system.
Correction
Important:
DO NOT replace any HVAC components.
Technicians are to install a water preventative filter in the plenum area using the procedure below.
1.
Set the windshield wiper arms so they are not in the park position (half way preferably).
2.
Remove the left air inlet grille panel. Refer to Air Inlet Grille Panel Replacement in SI.
3.
Remove the plenum water deflector.
4.
Assemble the bolt (1), clip (2) and filter (3) as shown.
5.
Install the filter and secure the clip (1) as shown.
6.
Tighten the bolt.
7.
Reinstall the plenum water deflector and the air inlet grille.
