How do you calibrate a replacement tire sensor on a factory 1999 C-5?
left-rear sensor (replaced)
Thanks

 

This should work for you:
used this message forwarded from a fellow forum memeber and it worked just as described. Thought I would post for anyone else that may need to reset their TPMs. 1) Turn ignition on 2) Press "Reset" button in order to clear any IPC display warning messages 3) Press and release the "Options" button on the DIC to scroll through the display options until the IPC display is blank 4) Press and hold the DIC "Reset" button for 3 seconds 5) Press the "Options" button again until TIRE TRAINING message appears 6) Press "Reset" button until the IPC "Learn L Front Tire" message appears in order to begin the programming 7) Install the J41760 Tire Pressure Monitor (TPM) System Programming Tool (large magnet will do) over the left front valve stem 8) The horn will sound, indicating the left front TPM sensor is programmed (if this takes more than 15 seconds, pull magnet back and try again, it will give you three tries. Then you must start over) 9) When the horn sounds, proceed to program the next TPM sensor in the following order as directed by the IPC messages: -Learn R Front Tire -Learn R Rear Tire -Learn L Rear Tire Programming can be canceled by turning ignition off, waiting 2 minutes with no sensors being learned, finishing all 4 wheels or through the DIC. If the programming is canceled with less than 4 sensors learned, it will only accept the codes programmed up to that point.

SC5

 

the above post is for training the BCM to reconize the tire sensors, if your question is really on how to calabrate the sensors, as far as I know you are out of luck they read what they read.


More than Zero

 

Not being a rocket scientist. I think that's the question after installing one rear sensor.