I have a 2002 7.3 4x4 truck. The 4x4 will not engage, the lights on the dash don't even light up. I took it to the ford dealer and they said the fuse box and gem module. (800.00 to fix). They said the windshield leaked and shorted then out, so I needed to be replaced? I have replaced the windshield and fixed the leak, my question is the fuse box and gem a plug and play and do different years work? Thank You.

 

I thought 01' and earlier were the ones with gem module.

 

Quote:
*FORD SPECIAL MESSAGE #15773 VARIOUS ELECTRICAL CONDITIONS RESULTING FROM WATER INTRUSION INTO THE GEM/CJB
SOME 1997-2002 EXPEDITION AND 1998-2002 NAVIGATOR VEHICLES MAY EXHIBIT VARIOUS UNUSUAL ELECTRICAL CONDITIONS, INCLUDING BUT NOT LIMITED TO: FRONT OR REAR BLOWER OR EATC STAYING ON WITH KEY OUT OF THE IGNITION, RADIO STAYING ON AFTER DOORS OPENED AND KEY OUT OF IGNITION, WIPER CIRCUIT FAILURE CODES, AND MULTIPLE SYSTEM WARNING LIGHTS WITH 'SHORT TO POWER' OR 'LOW BATTERY VOLTAGE' DTCS. THESE SYMPTOMS MOST OFTEN OCCUR AFTER A RAIN OR SNOW.

THIS MAY BE DUE TO GEM/CJB WATER INTRUSION RESULTING FROM A WINDSHIELD WATER LEAK. TO SERVICE, REMOVE THE GEM AND CJB FROM THE VEHICLE, SEPARATE THEM AND INSPECT FOR WATER CONTAMINATION OR CORROSION. IF FOUND IN EITHER COMPONENT, REPLACE BOTH COMPONENTS AND COMPLETELY RESEAL THE WINDSHIELD.

EFFECTIVE DATE: 04/05/2002


This notice was sent out to all ford dealerships and they know of the issue, the correct fixing procedures is replace the GEM module, inspect the fuse block and replace it if necessary, and remove and reseal the windshield, which usually results in a broken windshield, so a replacement may be needed. This also now includes F-150's up to 2003 and several other Ford models from the same years.

Ford will not recall this until many die because of it and it hits the new's like what happened with the rear axles on the Windstar after many people have lost their live due to this issue.

This is forum that comment was made on : The leaky windshield/GEM module problem, with a twist - Ford F150 Forum - Community of Ford Truck Fans

 

I found that the 02 03 have 2 modules and one is above the glove box and its fried. Thanks for the replies.

 

Hopefully that will be much cheaper for you to replace. Obviously the dealership didn't know what they were talking about.

 

for $800 repair price i would convert to manual transfer case.