03 expedition help

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Dohc-bird

Member
Joined
Sep 2, 2014
Posts
14
Reaction score
0
Location
N/W Indiana
Ok guys I have an 03 expedition that I have to replace the gem.
My question is there an interchange from other vehicles .
I'm at a loss here and new to gem problems .
 
OP
OP
D

Dohc-bird

Member
Joined
Sep 2, 2014
Posts
14
Reaction score
0
Location
N/W Indiana
The short version is
All sorts of electrical issues only with the interior lights not coming on when the door is open,accessory delay not working , advance trac warning and a leaky windshield .
I'm having the windshield resealed tomorrow .
So after all the trouble shooting and reading I've done I'm pretty sure it's the gem .
The everything happened pretty much all at once.
First I noticed the water intrusion and about a week later the electrical fun began.
I'm just wondering if I can purchase a used one and what vehicles can be a donor.
Is it a direct swap or do I need reprogramming?
 

stamp11127

Full Access Members
Joined
Mar 10, 2012
Posts
6,218
Reaction score
1,250
Location
Temple, Georgia
If you have a shoe rack for your clothes drier you could try "drying" the GEM out on a low setting for an hour or two. The temp used to solder the components is considerably higher so there isn't an issue with the heat.
 

Bedrck47

Full Access Members
Joined
Jul 4, 2014
Posts
5,641
Reaction score
652
Location
Elizebethtown, PA
Just a curious question

How are you going to replace the GEM when the 2003 expedition DOESN'T have a GEM module. The GEM's were only in the first generation Expys
 
OP
OP
D

Dohc-bird

Member
Joined
Sep 2, 2014
Posts
14
Reaction score
0
Location
N/W Indiana
Ok
Well as I've stated new to these issues and symptoms pointed to the what I thought was the gem.
Do you have any actual input ?
 

Bedrck47

Full Access Members
Joined
Jul 4, 2014
Posts
5,641
Reaction score
652
Location
Elizebethtown, PA
Need to know what all of the issues are. In as much detail that you can give.

How good are your electrical troubleshooting skills?

Can you read and understand electrical diagrams?

Which side of the expy was leaking water?

Remove the front kick panels on both sides and look at the ground connections for any signs of rust or if any of the grounds have broken off. This issue has been well documented here on the forum
 
OP
OP
D

Dohc-bird

Member
Joined
Sep 2, 2014
Posts
14
Reaction score
0
Location
N/W Indiana
The grounds are all good
The problem I'm having is the radio is staying on when the ignition is on the off position.
My dome lights and puddle lights do not come on with the doors open
But will come on with the switch on.
I also just noticed the "door ajar" light does not come on at all.
And my auto headlights do not work
The water leak was on the drivers side .
And I think I narrowed it down to the sunroof drains so I'll be checking on that tomorrow .
Fuses and relays are good .
I'm gonna look up a diagram for the door switch wiring and go from there.
Again any help is appreciated.
 
Last edited:

Bedrck47

Full Access Members
Joined
Jul 4, 2014
Posts
5,641
Reaction score
652
Location
Elizebethtown, PA
lets look at the radio problem first Try pulling fuse #22 and see if the radio goes off.

If it does then reinstall the fuse and see if it comes back on.

If the radio comes back on after you do the above then remove the Accessory delay
relay and using a ohm meter check to see if you have continuity between pin 30 and 87

Post the results
 

Latest posts

Members online

Forum statistics

Threads
53,396
Posts
500,653
Members
46,813
Latest member
max357
Top