TPMS Sensor Activation
Thread Starter
Burning Brakes
Joined: Jul 2014
Posts: 1,170
Likes: 253
From: Oconomowoc Wisconsin
TPMS Sensor Activation
Next week I will have my older Goodyear run flat tires replaced with non run flat tires. The previous owner put on C5 Z06 chrome rims, which I really like. He had the TPMS function turned off in the BCM. I purchased new Schrader TPMS sensors that will be installed on the rims with the new tires. My mechanic has a GM Tech II and will reprogram the TPMS function in the BCM to activate it again. Will he be able to activate the sensors with the Tech II or will we need a magnet to activate the sensors?
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
You need a MAGNET to trick the sensors into thinking they are rotating. The reed switch in side the sensor requires a magnet to make it make contact to turn the sensor on.
If you look at how the sensor body sits in the rim, you will notice that the magnet should be placed on the inside of the rim barrel just inboard of the stem for best activation contact.
Make sure that the stem seals are lightly lubed with some dielectric grease and the feral nut is torqued to the proper spec in INCH POUNDS. * 62 lb-in torque, which is only about 5 lb-ft (i.e., very little torque!! )
5 foot pounds DO NOT OVER TORQUE!
Bill
If you look at how the sensor body sits in the rim, you will notice that the magnet should be placed on the inside of the rim barrel just inboard of the stem for best activation contact.
Make sure that the stem seals are lightly lubed with some dielectric grease and the feral nut is torqued to the proper spec in INCH POUNDS. * 62 lb-in torque, which is only about 5 lb-ft (i.e., very little torque!! )
5 foot pounds DO NOT OVER TORQUE!
Bill
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
