New Problem Today
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Senior User
Joined: Mar 2007
Posts: 198
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Have went through all grounds i've found and cleaned and tightened. cleaned all battery posts, cables, etc. Batteries are less than a year old and fully charged. Afer cleaning and tightening everything seemed to be fixed. Truck has set for about a week and a half. Drove it today and the power windows would work. Power door locks would not work from in the cab or the remote. The radio would not shut off when removing the key. And for a new ones the "Door Ajar" light stays 'ON' in the gauge display. This is getting really to be a PITA. Any more suggestions. I haven't tried the "GEM" thing yet, can someone explain it some more in detail.
thanks
thanks
Freshman User
Joined: Mar 2008
Posts: 45
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From: maui,hawaii
the gem is mounted on the back of the fuse box it is like a bunch of relays in one box. i would remove the fuse box and check for water damage check connection if there is water damage leave the lower panel off and try running water from the top of the windshield down the driver side pilar and check for water leaks. that what i did on mine and found my leak the water never hit the floor it ran down the harness and straight to the gem and drove me nuts for weeks all the same problems as you have make sure you grab the harness and check to see if it is wet. wish you luck
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Senior User
Joined: Mar 2007
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Went out this afternoon to check more things out and everything was working perfectly normal again, as for it getting water on the Gem, is probably not a possibilitty because it sits in a garage. On the times this has happened, it came out of the garage and the weather was sunny and warm. I will still check out this Gem situation soon. Anyone else have ideas? I might as well give them a try.
thanks
thanks
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Senior User
Joined: Mar 2007
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Haven't Got Around To Checking The 'gem' Problem. But Have Noticed A Strange Thing To Add To This. When It Is Cool In The Morning, Everything Works Great. If I Go Out In The Afternoon When It Has Warmed Up; The Gremlins Have Returned And I Have The Same Problems. Any Other Ideas Or Does This Happen With The 'gem' Problems
Cargo Master
Joined: Jan 2001
Posts: 2,726
Likes: 5
From: Slatington, PA
Lots of things are related to the gem. Off the top of my head I can think of the radio, interior lights, keyless entry, parking lights, one touch down (drivers window), and I know there are other things that I'm forgetting.
Hotshot
Joined: Jan 2008
Posts: 13,144
Likes: 11
From: Rochdale MA
Haven't Got Around To Checking The 'gem' Problem. But Have Noticed A Strange Thing To Add To This. When It Is Cool In The Morning, Everything Works Great. If I Go Out In The Afternoon When It Has Warmed Up; The Gremlins Have Returned And I Have The Same Problems. Any Other Ideas Or Does This Happen With The 'gem' Problems
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Gone, but not forgotten
Joined: Oct 2005
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From: Charlotte-Fairbanks-Bflo
Haven't Got Around To Checking The 'gem' Problem. But Have Noticed A Strange Thing To Add To This. When It Is Cool In The Morning, Everything Works Great. If I Go Out In The Afternoon When It Has Warmed Up; The Gremlins Have Returned And I Have The Same Problems. Any Other Ideas Or Does This Happen With The 'gem' Problems
Thread Starter
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Senior User
Joined: Mar 2007
Posts: 198
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Getting Real Desparate Here. Have Gone Thru All The Grounds I Can Find (i Believe) I Have Pulled The Fuse Panel Loose And Have Been Looking For The "gem" And Can't Really Tell What I Should Be Looking For. Can Someone Shed Anymore Light On This Problem. If Anyone Has A Picture Of The 'gem' Or Can Describe It Would Really Help.
Thanks
Thanks
Hotshot
Joined: Jan 2008
Posts: 13,144
Likes: 11
From: Rochdale MA
I'm trying to locate some info on the gem for you on the workshop maunal.
Edit: I looked in the workshop manual and it seems that it may be the VSM It has to be programmed by the stealership upon installation.
Edit: I looked in the workshop manual and it seems that it may be the VSM It has to be programmed by the stealership upon installation.
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
Likes: 2
From: Concord NC
Here's a post from way back we all might find interesting. I haven't read it all but it says he don't have a GEM. Read it and see.
https://www.ford-trucks.com/forums/4...-question.html
https://www.ford-trucks.com/forums/4...-question.html
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
I did some searching myself and Jim and Barry are onto something. I found this from a respected name here.
Looking through the manual it says
Vehicle Security Module
Removal and Installation
NOTE: Prior to removal of the vehicle security module, it is necessary to upload module configuration information to a diagnostic tool. This information needs to be downloaded into the new module once installed. For additional information, refer to Section 418-01 .
So if the VSM is your issue you might see what the dealer charges for just the computer work compared to letting them do the whole swap. We can get you instructions on the R&R if you need them.
My 2002 does not have a GEM but rather a VSM (vehicle security module). From what I gather, it's about the same thing and I had to replace mine when the fobs stopped working. The VSS cost $125 and I installed it myself. Come to learn after I installed it, I had to temporarly plug in the old one, have the dealer scan it and re-flash the info into the new one. Nothing but the fobs worked right so if they say the GEM needs programming, it will most likely act the same way. Programming cost me $80 athough the dealer would have charged over $300 to do the whole job.
Vehicle Security Module
Removal and Installation
NOTE: Prior to removal of the vehicle security module, it is necessary to upload module configuration information to a diagnostic tool. This information needs to be downloaded into the new module once installed. For additional information, refer to Section 418-01 .
So if the VSM is your issue you might see what the dealer charges for just the computer work compared to letting them do the whole swap. We can get you instructions on the R&R if you need them.
Hotshot
Joined: Nov 2006
Posts: 11,288
Likes: 269
From: North of Greenville
Chris, you're dead on! I have a similar gremlin issue in my 2002 that sometimes creeps into existence, but I think mine is actually related to the battery and grounding wiring which I will eventually take care of when I relocate my batteries.
From all the digging around I did, I believe the VSM is behind the radio on the firewall.
From all the digging around I did, I believe the VSM is behind the radio on the firewall.