goom49 said:
I understand an agree with you, however there is still some kind of signal going in or coming out of the BCM. Its likely that the signal comes in on the fob receiving ant/module and then you would have to have something decipher the signal and stop it from continuing on to the BCM. In very easy I admit. But sometimes the mods that seem hard are much easier.
I hear ya, but the " signal going in" is probably
digital data, on the BCM or PCM data bus. It would be quite a feat to intercept this data transmission, decipher it, and provide some sorta generic output for an aftermarket product.
And it's been done before . On newer Corvettes, an aftermarket device is available that will automatically raise/lower the windows using the factory key-fob. This device (called the
Window Valet) plugs into the OBD2 port and looks for a data command over the vehicles data bus - for power lock activation... coming from the factory keyfob.
If it intercepts 3 commands for "lock" within a short timespan... not only will the doors lock, but the Window Valet sends a command on the PCM bus to raise the windows.
And the same the other direction; three unlock commands intercepted by the Window Valet - in turn sends a command to lower the windows... as the car unlocks the doors.
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I've installed 7 to 8 Bulldog remote starters over the years; and they all had a keyfob that was capable of totally replacing the factory keyfob; not only remote start, but door lock/unlock and trunk release.