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Discussion Starter #1
I just got new tires with new tpms sensors now system can’t reset/relearn. Loses communication or won’t enter relearn any way that I can find. Two tire shops have tried. The original one has replaced sensors for second time also.
 

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Chevy Trailblazer 2008 LTZ (4.2L)
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Do you do everything according to the instructions? Does any particular wheel not respond?
 

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Discussion Starter #3
It started with right front not responding. But tire shop yesterday said that one and both rear quit
 

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Discussion Starter #4
Light comes on and blinks for about a minute and then goes solid on until vehicle is shut off and restarted and starts again. Will not enter relearn with headlight switch like owners manual says
 

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Chevy Trailblazer 2008 LTZ (4.2L)
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The TPMS sensor matching process is outlined below:
1
. Set the parking brake.
2. Turn the ignition switch to ON/RUN with the
engine off.
3. Turn the headlamp control from off to parking lamps
four times within three seconds. A double horn chirp
will sound and the TPMS low tire warning light will
begin to flash. The double horn chirp and flashing
TPMS warning light indicate that the TPMS matching
process has started. The TPMS warning light
should continue flashing throughout the matching
procedure.
4. Start with the driver side front tire.
5. Remove the valve cap from the valve cap stem.
Activate the TPMS sensor by increasing or
decreasing the tire’s air pressure for 10 seconds,
then stop and listen for a single horn chirp. The
single horn chirp should sound within 15 seconds,
confirming that the sensor identification code has
been matched to this tire and wheel position. If you
do not hear the confirming single horn chirp, you will
need to start over with step number one.
6. Proceed to the passenger side front tire, and repeat
the procedure in Step 5.
7. Proceed to the passenger side rear tire, and repeat
the procedure in Step 5.
8. Proceed to the driver side rear tire, and repeat the
procedure in Step 5.
ignition switch to
LOCK/OFF to exit the sensor matching process.
 

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Discussion Starter #6
This has been tried by two different tire shops and also with the tpms machines at both shops. I think the frequency is wrong on these new sensors should be 315. I think they stuck wrong one in at 433 seems to be trying to connect but can’t. Some one at discount tire in a chat with me mentioned this as a possibility
 

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Chevy Trailblazer 2008 LTZ (4.2L)
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Look at the designation of the RPO code in the glove box. You have a code like this UJ6 ?
 

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Discussion Starter #8
Proper frequency still playing musical tires as to which one reads or diesnt’
 
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