#04-08-48-001D - Rear Window Defogger - Broken Heating Grid Detection Method - (Apr 17, 2012)

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Subject:
Rear Window Defogger – Broken Heating Grid Detection Method
Models:
2013 and Prior GM Passenger Cars and Light Duty Trucks

This bulletin is being revised to add the 2013 model year and change the recommended repair. Please discard Corporate Bulletin Number 04-08-48-001C (Sectio...

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Document Title: #04-08-48-001D - Rear Window Defogger - Broken Heating Grid Detection Method - (Apr 17, 2012)

rear

window

defogger

broken

heating

grid

method

passenger

change

vertical

detect

line

test

vehicle

steel

wool

heat

sensitive

paper

portable

infrared

thermometer

driver

zone

area

start

engine

point

repeat

mark

using

place

conductive

grid lines

grid line

broken grid

line zone

vertical grid lines

broken defogger grid

ball fine steel

fine steel wool

liquid crystal heat

crystal heat sensitive

outboard vertical lines

broken grid line

start engine window

engine window defogger

grid line repeat

driver grid line

repeat process passenger

process passenger center

passenger center area

center area zones

mark grid line

grid line zone

grid line found