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Where exactly is the fuse located for the rear window defogger for a 2007 Chevy Trailblazer?

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There are two fuse boxes, one is under the hood on drivers side and the other is under second row passenger seat on drivers side.

Posted on Aug 22, 2010

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Posted on Jan 02, 2017

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Which fuse box on the 2011 Chevy Malibu is the fuse for the rear defrost


Fuse box rear , fuse #23 30 amp ! Do you know where this is located ? There is also a relay for the Rear window defogger , located in the same rear fuse box .
Fuse Block - Rear
Left side of the luggage compartment, behind the left rear wheel well . But you really need to know how it works , you can check fuse an relay .
Rear Window Defogger Operation
Battery positive voltage is supplied through the BATT 1 fuse in the underhood fuse block to the rear defog relay switched input. When the rear defog switch button is pressed, the body control module (BCM) energizes the rear defog relay by providing a B+ to the control circuit of the rear defog relay. This allows battery positive voltage from the relay switched input through the switch contacts and out the relay switched output to the rear window defogger grid. The HVAC control module houses the rear defog switch and also illuminates the rear defog indicator on the switch button, upon this request. Ground for the rear window defogger grid is provided by G301 for the Sedan or G302 For the Extended Sedan.

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Where is rear window defogger relay located on 2007 Toyota Corolla


did you check the fuse panel on the outside under the hood drivers side near battery

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How do I re-attatch the plug for my rear window defogger to a 2007 Chevy Trailblazer?


To do it right you have to solder it-Does the Permatex not work? I'm sure they have many new gadgets like that but in my day we did it the old fashioned way-Good Luck John T

Dec 01, 2014 | 2007 Chevrolet Trailblazer

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WHERE IS THE FUSE FOR REAR WINDOW DEFROSTER WHAT NUMBER FUSE IS IT IN THE 2007 ENVOY


Does the indicator light come on when you turn the defroster on? Have you checked to see where the wires come in on the rear window to see if they might have gotten disconnected. It usually happens right at the point where the wire connects to the grid.

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Need wiring diagram of rear-window defogger circuit for 2008 Chevy Impala LT


What fuse ? BATT 3 40amp. under hood fuse box ? Did you check G403 ? Free wiring diagrams here http://www.bbbind.com/free-tsb
Enter vehicle info. year , make , model an engine . Under system click on body & accessories ,then under subsystem click on power windows . Click the search button then the blue link . The second diagram down is the defogger diagram . With a volt meter test for B+ voltage at relay pin # 30 .

Jan 30, 2018 | Chevrolet Impala Cars & Trucks

1 Answer

What fuse runs the rar window defogger? I cant find one labeled for that in either fuse box


The rear defogger is controlled by the Liftgate Module and the fuse for that is located in the fuse panel under the rear seat at location #3 (LGM# 2)

Nov 11, 2010 | 2003 Chevrolet TrailBlazer

1 Answer

My 2004 6cfl. Trailblazer rear window defroster is not working. The wires appear to be making a good contact. The outside mirrors defrost ok using the same switch as the test window defroster. Is there...


There is a module that controls the rear window defogger grid . LGM/ EGM Liftgate or endgate module .Receive's message on class 2 serial data network from the HVAC control module to turn it on when button pressed . Fuse # 3 30 amp located in the rear fuse box . Do you know where the rear fuse box is ?
Rear Window Defogger Description and Operation
Rear Window Defogger System Components
The rear window defogger system consist of the following components:
• HVAC control module
• Liftgate module (LGM)/endgate module (EGM)
• Rear window defogger grid
Rear Window Defogger Operation (With LGM)
Battery positive voltage is supplied through the LGM 2 fuse to the LGM for the rear window defogger system. When the rear window defogger switch is depressed, the HVAC control module illuminates the rear window defogger indicator, and sends a class 2 message to the LGM to enable the rear window defogger. The LGM enables the rear window defogger by allowing battery positive voltage to the rear window defogger.
When the rear window defogger switch is pressed for the first time, the defogger cycle lasts 10 minutes. Further operation results in 10 minute defogger cycles.
Rear Window Defogger Operation (With EGM)
Battery positive voltage is supplied through the EGM 2 fuse to the EGM for the rear window defogger system. When the rear window defogger switch is depressed, the HVAC control module illuminates the rear window defogger indicator, and sends a class 2 message to the EGM to enable the rear window defogger. The EGM enables the rear window defogger by allowing battery positive voltage to the rear window defogger.
The following conditions must be met for rear window defogger to operate:
• The end gate glass position is not below the index position.
• The window express down movement is not requested.
• The window down movement is not requested.
If the end-gate glass is not fully closed, the DIC displays "Tailgate Glass Down" when the rear defogger operation is attempted.
When the rear window defogger switch is pressed for the first time, the defogger cycle lasts 10 minutes. Further operation results in 10 minute defogger cycles.

Fuse Block - Rear
Beneath the left rear seat

Jul 13, 2017 | Chevrolet TrailBlazer Cars & Trucks

1 Answer

Where is the fuse for the rear defogger.


Hello u+fundraiser: My name is Roger and I will answer your question. To locate the rear window defogger fuse. Raise the hood and locate the fuse box under the hood. The fuse you want should be in the right hand upper corner. It will be a 30 amp. MAXI-FUSE. Should you need further help please just ask. Please rate the answer you received as this way I know your answer helped you. Thank You for using Fix Ya. Roger

Oct 19, 2009 | 1995 Plymouth Neon

1 Answer

Rear defogger/defroster is out in my 2007


The 30 amp fusible link located in the drivers side junction block controls power to the rear defoger. It is larger than a regular fuse it is pink and has a clear top.
The easiest thing to check first is just touch the terminal on the rear glass with a 12 volt test light or a DVOM to see if you have power.

Sep 21, 2009 | 2007 Toyota Yaris

1 Answer

2001 Sienna rear window defogger doesn't work


There are 3 fuses that control the rear defogger, and 1 relay

The fuses are: 10 amp HEATER, 10 amp MIRROR-HEATER; under the dash
The 30 amp DEF fuse is in the fuse box under the hood
The relay is the DEFOGGER relay, which is on the back side of the fuse panel under the dash

Also, check for a loose wire on the defroster grid (on the back glass), this is the most common problem.


Oct 19, 2008 | 2001 Toyota Sienna

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