GM Longroof Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.



 
HomeHome  PortalPortal  GalleryGallery  Latest imagesLatest images  SearchSearch  RegisterRegister  Log in  

 

 93 RMW rear defrost not working

Go down 
2 posters
AuthorMessage
theblurrrr

theblurrrr


Posts : 44
Join date : 2012-10-30
Location : Olympia, WA

93 RMW rear defrost not working Empty
PostSubject: 93 RMW rear defrost not working   93 RMW rear defrost not working Icon_minitimeSat May 04, 2013 2:16 am

Hello all!

The rear defroster on my 93 RMW isn't working although I can find nothing obviously wrong. Is there a common fault on these cars I should be aware of? Where would you look first? My dash controller indicates normal operation and time-out sequences.

Also, how would you check for outside rear view mirror defroster operation? It never gets cold enough here for them to fog up. Do they get warm to the touch?

Thanks in advance!
Back to top Go down
silverfox103
Moderator
silverfox103


Posts : 3370
Join date : 2008-11-05
Age : 75
Location : Littleton, NH & St. Simons, GA

93 RMW rear defrost not working Empty
PostSubject: Re: 93 RMW rear defrost not working   93 RMW rear defrost not working Icon_minitimeSat May 04, 2013 7:02 am

A lot of times the problem is the glass "shocks". The circuit runs through the absorber. If they have been replaced and not GM, then there is a good chance that is the problem. It's something to do with the paint and continuity. I know some guys have taken them apart and sanded the absorber, so there is continuity. This is a common problem.

Good Luck

Tom
Back to top Go down
Guest
Guest




93 RMW rear defrost not working Empty
PostSubject: Re: 93 RMW rear defrost not working   93 RMW rear defrost not working Icon_minitimeSat May 04, 2013 12:45 pm

The outside mirror heaters come on automatically when you turn on the rear window defroster.They get hot enough to discolor the paint surace of your mirrors,something to do with them being used in the warmer climates.The mirrors on my 91 OCC are badly discolored and bottomline is dont use unless the mirrors are icy.Dont think its a problem on the big mirror
cars.
Back to top Go down
Sponsored content





93 RMW rear defrost not working Empty
PostSubject: Re: 93 RMW rear defrost not working   93 RMW rear defrost not working Icon_minitime

Back to top Go down
 
93 RMW rear defrost not working
Back to top 
Page 1 of 1
 Similar topics
-
» no defrost, no floor vent, only middle vents working
» Rear Glass Defrost
» Rear Defrost Connector Broken
» Caprice defrost grille
» No defrost/vent selection '92 rmw blend door actuator??

Permissions in this forum:You cannot reply to topics in this forum
GM Longroof Forum :: Longroof Tech :: Heating and Air Conditioning-
Jump to: