a) Check tire pressure on all 5 tires to make sure all is well in pressure land.
b) Set parking brake
c) Turn on Key, then quickly turn headlamps on and off 4 times
d) 2 horn beeps sound to signal you are now entering the 5 minute calibration mode.
e) Go to left front tire and inflate or deflate for least 10 seconds
f) Wait for beep to signal ready to move on
g) Go to right front tire and inflate or deflate for at least 10 seconds
h) Wait for beep to signal ready to move on
i) Go to right rear tire and inflate or deflate for at least 10 seconds
j) Wait for beep to signal ready to move on
k) Go to left rear tire and inflate or deflate for at least 10 seconds
l) Wait for beep to signal ready to move on
M) Turn the key to loff to lock position, Drive vehicle to finalize relearn

 

Awesome. I'll wait to see if the PC automatically adjusts itself and the message goes away. If not, i'll recalibrate the sensors and see if that helps.

Thanks guys

 

Ok, know I'm new here, and dont know much on the Hummers yet, but am a DIY guy, learn fast, and have a few tricks. So, here's a suggestion.

An OBD II reader from Pep Boys, AutoZone, etc, costs about $60. Whenever, I have some idiot light saying something, especially if I've been tooling, and I cant find a reasonable cause, I hook it up, scan any codes, then reset them. I watch for a few days to see what happens and if they return. 99% of the time, its a silly glitch or computer fart, and does not return.

Learned this by paying $125.00 to the Jeep dealership to turn off the "Check Engine" light because I failed to achieve the mandatory third click reinstalling the gas cap. It sensed a suction problem, and freaked me out. Now, if it sounds fine, runs fine, nothing is too hot, and I dont smell something burning, I just reset the darn thing and keep an eye on it.

Now, again, dont know much about the Hummers yet, but unless someone here with more experience tells you it cannot be reset with an OBD II, I'd give it a try.

Cheers,

Mike
SkinGripz Inc.

 

Your Obd II port has nothing to do with the tpms light. Since the thread is 3 weeks old I imagine he has found a solution by now.