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Username Post: 09 Impala rear defrost switch/ timer        (Topic#359372)
Henrys57wagon 
Valued Contributor
Posts: 3182
Henrys57wagon
Age: 70
Loc: Ontario
Reg: 04-15-06
01-04-20 07:24 PM - Post#2783706    

For years the rear defrost timer never timed out. Now the defrost works intermittently.
I swapped the relay and the old one works in the start socket.
I pulled up the carpet at the pass door and checked for power in the feed which works intermittently which leads me to think it is the timer.

Any help would be appreciated. Thanks.

57 B/A wagon, 408"BB with 14' Bonair travel trailer,71 Nova 355"SB, 07 2500HD with 26 Prowler 5th wheel, 09 Impala LT, 2- 51 HenryJ's,
http://www.picturetrail.com/sfx/album/listing/use r...


 




junkman104 
Frequent Contributor
Posts: 1469
junkman104
Age: 60
Loc: Murphy N.C.
Reg: 01-25-14
01-05-20 04:37 AM - Post#2783718    
    In response to Henrys57wagon

Do the outside mirrors defrost while the rear window does not?



 
Henrys57wagon 
Valued Contributor
Posts: 3182
Henrys57wagon
Age: 70
Loc: Ontario
Reg: 04-15-06
01-05-20 05:54 AM - Post#2783719    
    In response to junkman104

I have to add that the switch lights up every time I push the button.

The mirrors have never worked that great since I have had the car, however the defogger always worked up till now. Sounds kind of funny!

57 B/A wagon, 408"BB with 14' Bonair travel trailer,71 Nova 355"SB, 07 2500HD with 26 Prowler 5th wheel, 09 Impala LT, 2- 51 HenryJ's,
http://www.picturetrail.com/sfx/album/listing/use r...


 
junkman104 
Frequent Contributor
Posts: 1469
junkman104
Age: 60
Loc: Murphy N.C.
Reg: 01-25-14
01-05-20 03:49 PM - Post#2783764    
    In response to Henrys57wagon

Wiring diagram shows power to both when relay energizes. I need to figure out how to post it for you.



 
junkman104 
Frequent Contributor
Posts: 1469
junkman104
Age: 60
Loc: Murphy N.C.
Reg: 01-25-14
01-06-20 05:15 AM - Post#2783800    
    In response to junkman104

Got it, check Batt3 fuse also.





 
Henrys57wagon 
Valued Contributor
Posts: 3182
Henrys57wagon
Age: 70
Loc: Ontario
Reg: 04-15-06
01-09-20 05:38 AM - Post#2784036    
    In response to junkman104

Thank you, will have to do more testing.

57 B/A wagon, 408"BB with 14' Bonair travel trailer,71 Nova 355"SB, 07 2500HD with 26 Prowler 5th wheel, 09 Impala LT, 2- 51 HenryJ's,
http://www.picturetrail.com/sfx/album/listing/use r...


 




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