I have an '08 Sierra and it's time for the first tire rotation. Wondering if the spare tire has a TPM sensor in it, and is there a way to reset/relearn the tire positions? The GM shop here wants $125 to rotate tires!!! I have heard that a powerful magnet will reset the sensors. Any thoughts?

 

i would use magnets but i just did my truck and it tells you how to reset your TPMS in your owners manual..its pretty easy