Tire Inflation Dash Light

[alsupp]

On a 2008 LTZ, the light persists in being on. Have pressures at factory specs (including spare), done the learning sequence successfully, even disconnected negative battery terminal for 30 secs. Local repair shop could not eliminate it with scan tool. Is this a unique issue? Al

 

[redjetty]

could it be one of the batteries in one of the TPMS is shot? just brainstorming here,,

 

[alsupp]

Appreciate the thought, but the learning process worked on all four tires. How do I find out if its the battery on the spare?