Instructables
Picture of How to remove a GPS disabler from a vehicle.
This instructable will show how to remove a GPS Disabler from your vehicle.

Warning: If your car is under lien, the lienholder may flip out when you disable the GPS.  That is their protection to make you pay your bills or take your car if you default.

I used:
Screw drivers to remove the trim under dash.
pliers/wire cuters
wire connectors
 
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Step 1: Locate device

We were notified when we signed the contract that there was a device present somewhere on the car.  They said it was hidden and we would never find it.
I located the device using several key facts:
The device needs a clear shot to the sky to receive the GPS signal.
The device needs clear shot to receive and broadcast its status signal (through GSM)
The device works by interrupting the starter signal. (Therefor located near the ignition)
Humans are lazy and complacent.

Gain access to the underside of your dash and look for anything out of place.  Look for new wiring, new electrical tape, wires that are "thicker" than thin stock wires" and wires that go off to the roof of the car.  You are looking for a plastic device thats about the size of a deck of cards with two wires running into the ignition wires.
Don't be afraid to remove electrical tape and zip ties, but be careful not to break or cut the thin wires that belong to your car.
mortezaab2 months ago

Hi, I just wanted to help a friend who got a GPS

Just position the car into a mobile phone SMS.

What hardware do I shut the car Tvryh their programming., Or is available at both pairs of my GPS I got a car that has the ability to be (It should be What can I do)

Ardiuno also be a avr or a matter

If I use the module's small circuit

Thank you

ironsmiter1 year ago
Once you own the title, the whole sheebang is YOURS to do with what you will :-)

So... I wonder what the 'plan' on that sim card is.
Nice that you now KNOW the chip... should aid in reverse engineering the code for your own nefarious uses. I'm going to do an educated guess, and say that 10 oin connector thingie is a jtag connector.
When it's cracked, might make a nice "track the kids driving habits" device.
Or even "crooks stole my car, and THIS is where it is" for police recovery.
thematthatter (author)  ironsmiter1 year ago
i dont have an unlocked cellphone to test the sim card, but i did put it in my phone to mess around with it and the phone started to have problems staying on.
Crooks know about these devices so it wont stop a hard time criminal but it will catch the high school kid who is stealing cars during lunch.
The device itself is not a bad idea, the company that made it says you can put up a GPS fence and it will alert you when the car is outside its area.
Its a really simple concept. A homemade device can be more discretely hidden, use real automotive wiring so it will blend in with the ignition wires, hook up to the power door lock relays and you can have your own police bait car. Or if you lock your keys out or something.

I have retrieved one of these from a bmw in a near by pullapart. It appears to have nearly the exact same chip as my arduino mega 2560 only difference is this one is 8 bit. Im curious as to what you ended up doing with yours. Im currently researching information to use this device for a project. Imetrik doesnt have alot of info on the complete device for understandable reasons but i was able to find data sheets on the 3 main chips in the device. Im glad to see im not the only one that wants to hack this think : ) ... If your interested im starting a thread on reverse engineering it. I hope to here from you.

http://www.electronicspoint.com/threads/need-help-reusing-imetrik-car-gps-remote-shut-down-circuit.268170/

thematthatter (author)  Josh_the_DIYer4 months ago

i havent done anything with it. its still in a box at my house.

It will be October before I can get to it with other stuff in the way. I will bookmark that page, it looks like there are some smart people on there.

mix19838 months ago
So basically you could just connect the ignition back the way it originally was and leave this unit alone so that the system thinks this unit is still doing its job...
thematthatter (author)  mix19838 months ago
until they come and recover the vehicle.
This sure is good information!! You have helped me a lot!!
altomic11 months ago
curious about the sim chip and whether you have checked it out in an unlocked mobile.
LOVE IT
Zibri1 year ago
Interesting. The 10 pin pad above the ATmega chip should be a JTAG port.
You should also try the sim card in a cell phone. It should give you free calls or free data :)
thematthatter (author)  Zibri1 year ago
i dont have an unlocked phone for the sim card :(

What would i need for the JTAG port? I have never heard of JTAG before today