dome light will not come on

2001 FORD F-150
235,000 MILES • 5.4L • V8 • 2WD • AUTOMATIC
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CSA1
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My truck is the Lariat. It is having a odd electrical problem. up until a couple weeks ago, everything worked fine, but last week, the dome light will not come on and windows will not roll down. checked all the fuses and they are all good. any idea's what i should check next? Had a friend tell me it is possibly the G.E.M. gone bad?
Feb 8, 2017 at 11:25 AM
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HMAC300
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both are hooked up to the GEM module and also the battery saver relay. the lights also run through the interior light relay .
Feb 8, 2017 at 12:18 PM
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CSA1
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should i start with GEM or battery saver relay?
Feb 8, 2017 at 12:23 PM
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HMAC300
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try the battery saver relay. it is probably the cheapest and will not need a reprogram.
Feb 8, 2017 at 3:47 PM
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CSA1
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replaced battery save relay & GEM, still no power to windows & dome light
Feb 11, 2017 at 10:51 AM
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CJ MEDEVAC
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Just slinging out an idea.

Maybe you have a problem similar to these?

https://www.2carpros.com/questions/jeep-cherokee-2004-jeep-cherokee-driver-door-electrical-problem/page/3

Keep us posted.

The Medic

Feb 11, 2017 at 11:37 AM
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CSA1
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Checked the grounds, all good & ohmed out like they should, It's like a relay or fused is popped somewhere, but all the fuses are good & I replaced the battery save relay, If the windows have their own relay, I'll be damned if i can find it :/
Feb 11, 2017 at 11:51 AM
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CSA1
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Question, after changing the GEM ( Numbers matched ) does it need to be reprogrammed?
Feb 11, 2017 at 12:27 PM
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STRAILER
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Hey,

I have heard of people plugging them in and they work, but then others times they don't and they will need to be reprogrammed.

Please let us know happens so it will help others.

Best, Ken
Feb 15, 2017 at 9:52 AM