LaCrosse V6-3.8L (2009)
Rear Defogger: Customer Interest
Audio - Poor Radio Reception/Static Interference
TECHNICAL
Bulletin No.: 03-08-44-005J
Date: January 20, 2010
Subject: Poor Radio Reception or Radio Static/Increased Interference with Rear Window Defogger On or Some Rear Window Defogger Grids May Be
Inoperative (Diagnose and Repair Rear Window Defogger Heating Grid)
Models:
1997-2005 Buick Century, LeSabre, Park Avenue, Regal
2005-2009 Buick Allure (Canada Only)
2005-2010 Buick LaCrosse
2006-2010 Buick Lucerne
1997-2001 Cadillac Catera
1997-2002 Cadillac Eldorado
1997-2004 Cadillac Seville
1997-2005 Cadillac DeVille
2003-2010 Cadillac CTS
2004-2010 Cadillac SRX
2005-2010 Cadillac STS
2006-2010 Cadillac DTS
2010 Chevrolet Camaro
1997-2004 Chevrolet Corvette
2000-2010 Chevrolet Impala
2000-2007 Chevrolet Monte Carlo
2004-2010 Chevrolet Aveo, Epica, Optra
2004-2007 Chevrolet Malibu (Classic Only)
1997-2003 Oldsmobile Aurora
1998-2002 Oldsmobile Intrigue
1999-2004 Oldsmobile Alero
1997-2006 Pontiac Grand Am
1997-2008 Pontiac Grand Prix
2004-2005 Pontiac GTO
2005-2010 Pontiac G6, G3/Wave (Canada Only)
2006-2009 Pontiac Solstice
2007-2009 Saturn SKY
2010 Saturn AURA
Supercede:
This bulletin is being revised to add models. Please discard Corporate Bulletin Number 03-08-44-005I (Section 08 - Body and Accessories).
Condition
Some customers may comment that the radio has poor reception or radio static/increased interference when the rear window defogger is turned on. Also,
some rear window defogger grids may be inoperative.
Cause
This condition may be due to microscopic cracks in the electrically heated grids of the rear window defogger. These cracks may cause electrical
interference when the rear defogger is on and this could affect radio reception.
Background
The addition of vertical grid lines to the heated back window defogger circuits has made it difficult to detect broken defogger grid lines. In the past, it
was a simple matter to use a voltmeter to check the continuity of each grid line in order to locate a non-functional line. New design back windows have
two vertical grid lines that connect all of the horizontal grid lines together, thereby providing alternate routes for the electrical current to follow. This
makes the old test method ineffective.
Materials Required
-
Permatex Quick Grid, P/N 12346001 or equivalent
