Tire Pressure Sensor Reset 2007

RB Racing · May 27, 2007

I just finished mounting a set of chrome 20's on my NBS Sierra with the proper sensors. I went to do a re-learn on the sensors and the drivers side learned o.k. but when I went to do the passenger side nothing happened, horn did not sound?

I timed out so I went to do it over now the drivers front won't re-learn and there is a code now Service tire presure sensors.

Anybody run into this, may have to go to the dealer.

SierraLeone · May 27, 2007

I just finished mounting a set of chrome 20's on my NBS Sierra with the proper sensors. I went to do a re-learn on the sensors and the drivers side learned o.k. but when I went to do the passenger side nothing happened, horn did not sound?
I timed out so I went to do it over now the drivers front won't re-learn and there is a code now Service tire presure sensors.

Anybody run into this, may have to go to the dealer.

I don't have an answer for you, but where are the sensors? In the rims? If so, are they clogged with the soap wash that they use when they mount tires? Just a thought.

RB Racing · May 27, 2007

They are in the rim connected to the valve stem and are sealed units so soap shouldn't be an issue.

dsmazz · May 28, 2007

Did you go with GM wheels and GM sensors, or all aftermarket? Don't know if it would make a difference or not.

I've been doing some research on the TPMS, and I read somewhere that if you put in new sensors, you need to use the Tech II to re-establish communication. Wish I could find that info now, although I don't know why it should make any difference. I read the information in the owner's manual and it seems sort of busy to go through the process with not much time allowed. Wish I could offer something positive to help you out.

SierraLeone · May 28, 2007

They are in the rim connected to the valve stem and are sealed units so soap shouldn't be an issue.

Ok, I researched this a bit since I have been intrigued as to how GM accomplished this. The sensor is a small box attached to the valve stem. As you say, it is unaffected by normal tire mounting procedures, but it can be damaged if the mounting is done carelessly. It is powered by a 10 year lithium battery, so that may not be the issue. Each sensor has a unique code and that code is registered by the vehicle during "programming". Programming is done by Mr. Goodwrench using a special tool. The latter is just a "U" shaped magnet that fits around the valve stem. You can use any strong magnet as the Corvette enthusiasts have discovered. My guess is that the magnet activates a reed switch (don't ask) in the sensor circuit that tells it to broadcast a programming signal to the vehicle that allows it to be "registered" by the DIC system.

Of course, the dealer will show no mercy if you need to have them reprogram for you.

RB Racing · June 1, 2007

Yes they are 07 GM sensors which I hoped would re-learn when I follewed the procedure in the manual. I have read about the magnet trick on Corvettes as I own a 2000 C5 but I'm not sure if these sensors follow that same procedure. I plan on switching to my stock wheels for winter use so I bought the extra set thinking it was a quick re-learn which kind os sucks if I have to go to the dealer for programming.

I get a tire sensor code now when I start the truck. Looks sweet with the new wheels though.

Hopefully a GM tech will chime in.