2011 Chevy traverse LS 3.6 FWD 86,000: I have a “service tire pressure monitoring system”. With the steady flat tire yellow warning light. Not getting any tire pressure readings just dash line at each tire location on the dash readout. All tires properly inflated and the tps sensors in all four tires are sending a signal (tested at tire service center) when I did the GM reset with the key fob and let air out of each tire, The front passengar tire would not trigger the horn beep to signal it took. Any advice?

So you started at the lf tire, lf directional light was on, let out air, and the horn chirped?

Then you went to the RF, the rf directional was on, and you let air out and it didn't chirp in the prescribed time period?

Do you have any other TPMS-equipped vehicles anywhere nearby when you perform the relearn procedure? If you do, sometimes your intended car will pick up the signal from an unintended TPMS sensor and confuse the process. When this happens it will set a DTC and illuminate the TPMS light.

No other vehicles nearby when tested and post 2 correct the deflat did not respond the horn sound. Thought of just doing a different tire and mess up the location but see if oth rear tires respond and it’* just the one location even though it tested ok by the tire store meter.

Yes went to LF at signal light deflated horn sound. Moved to RF deflated no horn sound. Reset timed out.

update I disconnected the battery for an hour to clear the computer. Then did a reset of all of the tires but out of order of the light pattern. Then redid a reset follow the light pattern at the appropriate tire and the TPS system is working. For now. Let’* hope

Great! Thanks for letting us know how it came out.