rear defroster are not working anymore

could be but the fuse for the blower is a 30 amp and rear defroster is less.
make sure the contacts on the rear window are intact as they often fail from all the heat we have had.
the blower may be at fault or the resistor may have failed.
have a shop check this for you to confirm and give you a bid.

Roy

I have a 2004 impala that did the same thing. Check for a fuse on the drivers side fuse panel (just inside the drivers door)it is a 20 or 25amp fuse towards bottom of fuse panel in the middle.Test the fuse with a test light.If you get voltage on one side of fuse but not the other (and the fuse is good)your problem may be in the ignition switch(mine was). Pull the ignition switch out, take the black plastic cover off the back(don't worry no springs will pop out)and look for burned (black) spots under the connections. Clean (gently) with emery paper and put back together.I hope this helps, took me days to track it all down on mine.

Hey guys, I replaced my ignition switch last spring due to non-start issues. My intermittent blower motor, cruise and rear defrost problems came after that. I don't see how the ignition switch could be tied to the blower motor. When my blower motor works, my cruise control works and my rear defroster works. The outside ambient temp. must be above 60F and then the problem is intermittent, otherwise the 3 functions will not work ever. I don't know much about auto electronics, but these functions might be controlled by the BCM. I remember from reading posts on this site about my non-start issue that the BCM has some control of the signal in the starting. So, maybe the BCM is at fault???

2002 base Impala with 203,000 miles. Ignition has never been better since reading on this website about changing the Ignition switch.

If you can dig into this blower motor issue in more depth, I would appreciate it.

blower motor stoped defroster wont work happened last week waited and came on this week waited half hour no working

i have replaced the relay that is under the hood, still not working.

Have you checked the grid for visible breaks or the tabs the feed it power and ground for being loose or came off?

Electrical problem
2006 Chevy Impala 6 cyl Two Wheel Drive Automatic

The rear defroster will not work. I have check all fuses and relay. No power to back window strip. HELP!!!

check both rear defroster tabs at each end of the window. they come off all the time,you can resolder it to the window.

Both ends are good .Just no power to the deforster

if there is no power at the grid than check for power at the grid connector,it's attached to the side of the rear window. if there is power at the connector then there is a chance that it might be a problem with the rear window itself. if thats the case you would have to replace the whole rear window. also check the rear defroster relay,switch it with a different relay and see if it works.

My defroster quit too. I found a wire burned in the connector that is found under the fuse box that is located inside the car on the passenger side kick panel.
You have to remove the entire kick panel to access the large white connector not just the fuse door. The panel just unsnaps as you lift up and out. Start from the panel seam beside the passenger seat and lift up and back. You'll also have to unsnap the carpet there too.
You'll see the white connector that has a lot of wires on it. If you'll unsnap the connector you'll see the burned wire. It will be thicker than the others and purple. Just cut the purple wire on both sides of the connector and splice them together with a piece of wire the same gauge and it will work fine.

[quote:9752a3a136="chrisdurham"]My defroster quit too. I found a wire burned in the connector that is found under the fuse box that is located inside the car on the passenger side kick panel.
You have to remove the entire kick panel to access the large white connector not just the fuse door. The panel just unsnaps as you lift up and out. Start from the panel seam beside the passenger seat and lift up and back. You'll also have to unsnap the carpet there too.
You'll see the white connector that has a lot of wires on it. If you'll unsnap the connector you'll see the burned wire. It will be thicker than the others and purple. Just cut the purple wire on both sides of the connector and splice them together with a piece of wire the same gauge and it will work fine.[/quote:9752a3a136]


Hey, Thanks for the tip.
Worked like a charm.

When I push the button the defrost light comes on and stays on, but the window never defrosts. I am the second owner, but it worked when I bought it and got me through last winter.

I do have tinted windows, but it was factory, do not know if this is a factor.

I unfortunately have NO idea about this stuff and don't even know where to begin to look. I noticed on a previous answer on a Cavalier that it could be a fuse, but again, not sure where to look as I am a complete novice. I don't want to take it to a shop having no clue what to expect, any advice would be helpful so that I am not taken advantage of.

Thanks!!

Start by testing these fuses with a test light.... A/C cruise-10 amp(left side of dash in panel), heated mirror fuse-10 amp (right side of dash in panel), this is also where you will find the circuit breaker and relay for the rear defroster. Test the breaker for power in and out. if ok, feel th erelay to see ifit clicks when you turn on the rear defrost. get back with what you find

I have about 80,000 miles on my POS 2004 Impala and now the rear defroster stoped working. I took it to the chevy dealership and had them reapair it for around $100 and now it doesn't work again about a week after and they refuse to give me my money back or re-repair it. I would like to know if this is an easy fix.

I'm having the same problem and same when I switch the cool air to hot air, these are common problems and they should have been a recall and have the company fix them instead of consumers paying to fix . They are nice cars but everything seems to go wrong with them.

My rear defroster stopped working. When I press the button on the panel to turn it on i hear a click and the light comes on but the defroster doesn't defrost the windows. Any ideas?

If the light on the rear defrost is coming on and you can hear the relay click on. I would by checking for power at the rear window. Just get a regular multimeter. Apply the red lead of the meter to the connector on the drivers side. Apply the black lead to a known good ground. If there is power trace the open from the connector back to the switch. If there is power set the multimeter on ohms and check the grinds the grind run parallel with each other hold the red lead on one side of a grind and the black lead on the other side if you find a grind with an open the meter will show ol. If grind is ok it will show a resistance value usuallly around 1 to 3 ohms. If you find a grind thats open it will need to be repaired to operate correctly

USER NOTE: it's a very common problem and there are videos explaining exactly what it it. It's a wire that needs to be taken apart and re-soldered.

could the fuse be blown?

If you think it might be grab the owners manual and check for the location of the rear defrost fuse, But given the information of the light coming on when pressed and a clicking noise (relay activating) its most likely is not a fuse

Rear Window Defogger not working.
Have gone through many of the steps outlined on various sites.
Big question is -where is the so called breaker for the rear window defrost as outlined in my manual???
The relay is there but where the breaker is supposed to be is a wiring block with a nut in the center to take off.
Is the breaker concealed behind it.
I read of other people taking out the wiring block and finding a power seat breaker but not a defrost breaker.
Any help would be appreciated.
l.b.

My info shows this. The relay is in right instrument panel junction block.

Just to add, if you have an owners manual, the location of relay should be there.

Electrical problem
2001 Chevy Impala 6 cyl Front Wheel Drive 154000 miles

1. The rear defroster doesn't work and we suspecting the fuse - but have not been able to locate it. The manual says it behind the fuse box, but how do you get to i?

2. What what cause just the low beam in both headlights to go out at the same time? The high beams work just fine. This is what happened: I was using my ipod with an itrip on trip at night and it the speakers were picking up interference with the low beam headlights on. Then I switched to high beams and the interference went way, switch back to low beam - again there was interference. Then when the car passed, back to high beams (no interference) but when the next car passed and I switch to low beam that the lights no longer worked. I drove with high beams or fog lights the rest of the way.

Do you have a voltmeter? Test the rear defroster at the plug that attaches to the grid, if there is no power then you should check the fuse and the switch. The switch should test with OHM meter, in the on position meter should read zero, in off position it should read infinite or OL. As for the headlights, which source did you use to power the ipod? The power point, or the cigar lighter? And is it just the headlights that are out, or is the outlet dead too?

I will try what you suggested for the rear defroster. As far as the headlight issue.. my ipod was not plugged into anything. I was using an i-trip that plugs into my ipod and allows me to transmit my music over through my car stereo.

The headlights are only out on low beam. On high beam they work fine.

Check the headlamp relay under the left side of the dash.

https://www.2carpros.com/how_to/how_do_i_check_a_relay.htm

Interior problem
2004 Chevy Impala 6 cyl Front Wheel Drive Automatic

The defroster does not work. I repalced the fuse / relay and is not the problem. Any suggestions?

check and see if there is power to the wires going to the rear grid. there may be a problem with the grid itself. take a look and see if there is any breaks in the grid. let me know what you find

Thank you very much. One of the clips attached to the window came loose / broke off