Rear Defroster problems

hhipster35ca · 03-23-2008, 04:52 PM

Hi there, just a newbie here at the forums page. We have a 1999 Jimmy and the rear defroster doesn't seem to be working. Any suggestions from the members.

thanks

jimbo543 · 03-24-2008, 12:39 AM

look at the grid closely for any breaks in the grids/lines across the glass.

does the switch led light up when on?

hhipster35ca · 03-27-2008, 02:59 PM

Yes the light comes on when. I couldn't see ant breaks in the wires.

junior3382 · 03-27-2008, 04:19 PM

Welcome:
There is a wiring harness, looks like a little plug, that connects the defroster. I believe it is located in the upper corners of the glass. On both sides. Sometimes with the flip open glass like these, they come loose, make sure the flat metal connections are free from corosion and that they are firmly attatched. If that does not remedy the problem here, double check the fuse, make sure it is not blown. Those defrost units drain a lot of jucie, and if the heat, wipers, headlights and defroster are on, sometimes it can skip enough in the power supply to trip the fuse. I would start there, and then post back an see if that helps.

hhipster35ca · 03-27-2008, 05:57 PM

Thanks for the input I will check your suggestions in the morning.

03-23-2008, 04:52 PM	#1
hhipster35ca Junior Member Join Date: Mar 2008 Posts: 3	Rear Defroster problems Hi there, just a newbie here at the forums page. We have a 1999 Jimmy and the rear defroster doesn't seem to be working. Any suggestions from the members. thanks

03-27-2008, 04:19 PM	#4
junior3382 Senior Member Join Date: Mar 2007 Location: Currently, I live in Lancaster county, Pennsylvania. Posts: 3,170	Welcome: There is a wiring harness, looks like a little plug, that connects the defroster. I believe it is located in the upper corners of the glass. On both sides. Sometimes with the flip open glass like these, they come loose, make sure the flat metal connections are free from corosion and that they are firmly attatched. If that does not remedy the problem here, double check the fuse, make sure it is not blown. Those defrost units drain a lot of jucie, and if the heat, wipers, headlights and defroster are on, sometimes it can skip enough in the power supply to trip the fuse. I would start there, and then post back an see if that helps. __________________ *The Blazer is dead, so I pumped her with lead, laid her to bed, and bought a FORD instead!*

03-27-2008, 05:57 PM	#5
hhipster35ca Junior Member Join Date: Mar 2008 Posts: 3	Thanks for the input I will check your suggestions in the morning. __________________ 1999 GMC Jimmy 4x4 4.3L Vortec V6 Wifes truck I drive a Saturn 1999 Saturn SL1 1.9L

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
rear end	86 chev guy	GMC Truck Forum	9	12-15-2007 05:46 PM
rear end sag	bcookn	Toyota Truck Forum	4	02-12-2007 11:00 PM
Interior Problems...Seat Memory buttons & Rear Does not unlock ...	dlshunter	Chevy Truck Forum	2	01-03-2007 08:54 PM
rear end	87sierraclassic	GMC Truck Forum	12	09-21-2006 11:13 PM
The vehicle, an lder sedan, slid under the rear of the truck and was crushed as far back as the rear (Chico Enterprise-Record)	trucknews	Truck News (headlines)	0	09-30-2005 12:30 AM

03-24-2008, 12:39 AM	#2
jimbo543 Senior Member Join Date: Sep 2007 Location: MN Posts: 208	look at the grid closely for any breaks in the grids/lines across the glass. does the switch led light up when on?

03-27-2008, 02:59 PM	#3
hhipster35ca Junior Member Join Date: Mar 2008 Posts: 3	Yes the light comes on when. I couldn't see ant breaks in the wires.