Aftermarket Wheels & Service Tire Pressure Monitor - SVC TPM

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No fuse for jus this circuit. The sensors contain a battery, that directly signals the BCM. The BCM communicates the TPM message to the I/P cluster to turn on the light via the class 2 serial data link and the BCM chimes.
So, no fuse.
Someone last year had a great idea, that was for the BCM to recognize via the class 2 serial data link from the PCM/TCCM that you are in 4-Lo Lock and if you were in 4-Lo Lock, turn off the TPM warning, since this would mean you were not traveling on the highway. (I cannot remember who suggested it, but it was a great idea after I thought about it for a while.)
I actually passed this idea through GM engineering and GM legal, and the reply was very quick...NO. It is a federally mandated system that requires these TPM sensors on the vehicle, and no one will take responsibility of saying under certain conditions it will shut off the warning.
Car manufacturers are just a bit touchy on the subject of lawsuits lately.