TPMS Wackiness: Had A Flat, Didn't Indicate it; Tire Is At Shop, Still Shows Pressure. What Gives?

[Scrappycrow]

So, this morning I came out to a flat on my '13 LTZ. I must have picked up the screw within 1/4 mile of home, as it had little wear on it.

I jacked that corner up so there was no weight on the tire, then started the truck to see what the TPMS said, but it read that tire only 1 psi lower than the others.

Even after I left the wheel & tire at the shop and drove well out of range, it still showed pressure in the tire (albeit now 4 psi lower than the others).

What's going on here?

Thanks,
Scrappy

 

[strutaeng]

Sounds like a dead or faulty sensor?

If you have one of those handheld sensor reprogrammer tools, you can go around each tire and check the status of each sensor.

 

[Scrappycrow]

If you have one of those handheld sensor reprogrammer tools, you can go around each tire and check the status of each sensor.

Good idea, thanks! Just a few days ago, I picked up one recommended by folks here (OEC-T5 EL-50448 from Amazon).