Looking for Gem Module for 1999 ford windstar alarm wont go off

If replacing the GEM module did not fix the issue, the next step is to check the wiring and connections to the GEM module. Make sure all of the wires are properly connected, and check for any signs of corrosion or damage. You may also want to try resetting the GEM module by disconnecting the battery for a few minutes and then reconnecting it. If none of these steps work, then the problem may lie in the fuse box or wiring harness, and you may need to take the vehicle to a qualified technician to have it checked.

It supply's B+ voltage to the start interrupt relay ! Plus to the GEM - genaric electronic module . This is only on vehicles with a anti-theft system .

Are u assuming the GEM module is at fault ? Did you or your local auto electrician check for DTC'S - diagnostic trouble codes?
GEM/CTM Wiggle Test Diagnostic Trouble Code (DTC) Index DTC Description DTC Caused By B1317 Battery Voltage HIGH GEM/CTM B1318 Battery Voltage Low GEM/CTM B1322 Driver Door Ajar Circuit Short to Ground GEM/CTM B1330 Passenger Door Ajar Short to Ground GEM/CTM B1352 Ignition Key-In Circuit Failure GEM/CTM B1410 Driver Power Window Motor Circuit Failure GEM B1438 Wiper Mode Select Switch Circuit Failure GEM/CTM B1441 Wiper Mode Select Switch Short to Ground GEM/CTM B1446 Wiper Park Sense Circuit Failure GEM/CTM B1450 Wiper/Wash Interval Delay Switch Input Circuit Failure GEM/CTM B1453 Wiper/Wash Interval Delay Switch Input Short to Ground GEM/CTM B1462 Seat Belt Switch Circuit Failure GEM/CTM B1577 Park Lamp Input Circuit Short to Battery GEM/CTM B1610 Illuminated Entry Input (From RAP Module) Circuit Short to Ground GEM/CTM
Did you an your auto electrican check power an grounds for the GEM ? Voltage drop testing ? . Did you check power an ground circuits for the affected systems . Working when they want sounds more like a loose connection somewhere .
ECM Inputs and Outputs Diagnosis
Symptom Chart
Symptom Chart Condition Possible Sources Action

• The Wipers Are Inoperative

• CJB Fuse 16 (30A).
• Circuitry.
• GEM/CTM.
• Multi-function switch (13K359).
• Wiper run/park relay.
• Wiper HI/LO relay.
• Wiper motor.
• DTC B1431.
• DTC B1432.
• DTC B1438.
• DTC B1450.
• DTC B1840.

• GO to Pinpoint Test A .

Plus looking at GEM scan data on a factory scan tool .Too many people miss diagnose these system's because they don't have a clue .

The warning chime is on because the GEM - generic electronic module think's the door is open . Your best bet ,have a qualified repair shop check it out . Unless you have a scanner that will talk with the GEM & the engine computer & ABS computer , checking DTC'S - dfiagnostic trouble codes . If you don't know about this , take it to a repair shop.

Sodometer and speedometer could be vehicle speed sensor. ABS module could cause the other symptom. Do a search on the part number they say is bad. Try this site for repairs http://www.bba-reman.com/catalogue/Products.aspx?category=811

check fuse 37, a 20 amp yellow fuse in the interior fuse box, if that checks ok the problem is with the electronic module that controls the locks, it is called the GEM module.

the windows are controlled through a central electronic module called a GEM (Generic electronic module), there is no seperate fuse for the window, if only one window works then either the window switch is defective or the window motor is defective, the motor is the most common problem.

If you are looking for the module it is under the vehicle on drivers side just below the drivers door on frame

I AS A FORD TECH IN A LOCAL DEALER FOR 20 YEARS, THERE IS NO MODULE CALLED A BCM IN YOUR CAR, GM CALLS IT A BCM OR BODY CONTROL MODULE, THE GEM AND GM BCM SERVE THE SAME FUNCTION, AND YES THE DOOR LOCKS RUN THROUGH THE GEM ON FORD'S, AND YES IT MAY BE ON THE ELECTRONICS TRY IN THE TRUNK, IT IS THE WINDSTAR THAT HAS IT ABOVE THE FUSE BOX, SORRY, BEEN A FEW YEARS SINCE I RETIRED. OH GEM STANDS FOR GENERIC ELECTRONIC MODULE