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Jim Grant Tech Tips Jim Grant Tech Tips
A collection of helpful articles based on reader submissions
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  Jim Grant's Tech TipsJim Grant's Tech Tips
Below is a collection of Jim Grant's Tech Tips sorted by Vehicle Make. These Tech Tips were answers to questions submitted to Jim by ALLDATAdiy.com users over the course of many years.
If you have any questions, please feel free to email us.
 
 

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  Jim Grant's Tech Tips

‘95 Ford Windstar, GEM Module

Q: Could a GEM module cause the cruise control not to work in my Ď95 Ford Windstar? If so where is it located in the vehicle?

- Rick Hurd

A: The Generic Electronic Module (GEM) is located behind the instrument panel to the left of the steering column. Itís a bit of a bugger to get at and that may be a good thing for you. Why is that? I have a problem with the diagnosis of your inoperative cruise control being related to the GEM module. Hereís why. The GEM module is responsible for the following: Door Ajar & Low Washer Fluid warning light, Remote Keyless Entry & Power Door Locks, Power Windows, Courtesy Lamps, all the Door Ajar Switches, including the Lift Gate, Interval Wipers/Washer, Heated Mirrors & Rear Window Defrost, Rear Air Suspension, Warning Chimes and also ties in a bit with the ABS & Air Bag System. There may have been a couple of other little items I missed. The cruise control has its own module called a Speed Control Servo. There are also 3 fuses involved with the cruise control. The only item the 2 modules share is the input signal from the vehicle speed sensor, which is also used by the transmission and engine computer too. If the vehicle speed sensor had failed you would have a lot of warning lights on and other problems more pronounced than a cruise control that doesnít work. I would suggest a little more diagnosis before you fork out the bucks for a GEM module. You canít sell it to me yet.

 
     
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