Question about 2005 Chevrolet Malibu

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I can not turn on the airconditioner or rear defog. None of those buttons work. The airconditioner was stuck on, but somehow it got turned off. No matter how many times you push any buttons in that area, they won't come on.

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  • 315 Answers

Check for bad fuses. See your user manual for the location of the fuse boxes in your car.

If all else fails, ask a mechanic.

Posted on Jul 14, 2009

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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.

Nov 23, 2016 | 2011 Chevrolet Malibu

1 Answer

Wiring diagram for rear window defogger 2005 silverado from dash to deffoger


Rear Window Defogger System Components
The rear window defogger system consist of the following components:
• HVAC control module
• Body control module (BCM)
• DEFOG relay
• Rear window defogger grid
Rear Window Defogger Operation
When you turn the ignition to the ON position, ignition voltage is supplied to the DEFOG relay coil. Battery positive voltage is supplied at all times to the DEFOG relay switched input. 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 BCM. The BCM energizes the DEFOG relay by grounding the control circuit of the 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. Ground for the rear window defogger is provided by G306 or G390 (crew cab).
When you turn ON the ignition and press the rear window defogger switch for the first time, the defogger cycle lasts 10 minutes. Further operation results in 5 minute defogger cycles.

Do you know what your messing with ? What's the problem ?

Oct 30, 2016 | Cars & Trucks

1 Answer

Do you have the wiring for the rear defogger?


Did you check voltage and ground at rear defog connector, purple wire should be voltage, black wire is ground. Check to see what your missing, defog turned on. If you have good voltage and ground, then suspect a break in the defog grid. If you can locate the break, the auto store should have some stuff you can paint over the break to allow continuity for the grid.
Also, you should be able to check grid continuity, ohms test. If no continuity, something wrong with grid.
Here is partial diagram.
26008005-gi44cmd14lp0n4xljfqk2pra-2-0.jpg

Dec 14, 2015 | 2010 Chevrolet Chevrolet HHR LS

2 Answers

Why is my rear defrost not working


Switch, fuse or maybe the wiring to the window has come loose or off, happens alot, kits are available at local auto parts stores...
I hope that helps...

Mar 02, 2015 | 2008 Chevrolet Malibu

1 Answer

Front blower/rear defog 15A fuse keeps blowing


There is a short to ground on that circuit (a power wire is touching a ground somewhere). Since it happens when you turn the heater on, it's most likely between the front blower and the fuse. Unfortunately there is no easy fix that won't burn your car down, you'll need a wiring diagram and a short finder or multi meter.

Nov 15, 2013 | Dodge Durango Cars & Trucks

1 Answer

Rear-window defogger wont work and radio cuts off when u put on


Sounds like a dead short. Disconnect the power to the radio and try the rear defog. Then to determine if it is the radio or the hater, disconnect the heater and put power to the radio. Another simple test is to, at night have the head lights on, turn the radio on see how much the lights dim. Then with the radio off, turn the rear defog on. Then try both. IF either one makes the head lights dim and not recover after a minute or so that devise is the shorted component. Check grounds on the radio and the heater.

Nov 30, 2009 | 2003 Pontiac Grand Prix

1 Answer

1997 - Toyota Corolla -- Rear window defog not working


On each side of the Window (Could be at top or Bottom0 There are Small Slide on Wiring Connectors. Sometimes these Get Loose. I would start There.

Jan 04, 2009 | 1997 Toyota Corolla

1 Answer

Rear defogger for toyota 4runner


most likely its a linkage assembly in a/c controls that the linkage somehow binded and is not makeing a full contact
check the fuses and engine compartment relays

for the defoger on the rear pull the door panel off use a test light to test the leads so that you can get a good connection

most likely the wireing is not the cause and i recommend checking the linkage to or relay, fuse to the rear defoger

Jun 02, 2008 | 1991 Toyota 4Runner

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