Did a search and didn't find what I need. I want to reset the tire pressure sensors without a tool. Recently my sensors started showing different readouts on each side of the car. The right side shows 30 psi and the left side shows 40 psi. Neither are correct. The actual psi using my tire gauge shows 32psi all around. before I get into more expensive repairs I would like to just try a reset. But all of the info I see on line will not work since it mostly wants me to push buttons I don't have in this car. Can anyone provide instructions that might actually work for 2010 HHR Panel? Thanks in advance. Chuck

 

The procedure is outlined in the owners manual

https://contentdelivery.ext.gm.com/c...se/2k10hhr.pdf

If you don’t have buttons, a tire shop should able to program them for you.

 

Have you tried the let air out method? If it does not work the ONLY option is a tool, they are under $10.
Some 2010 models have the old firmware.
Here is one on Amazon

 

With the tool, you still have to have buttons on the key fob to set the learning procedure for tpms

 

Why not read the Owner Manual it has real information better than the interwebs? See the link in my sig. https://www.chevrolet.com/support/ve...manuals-guides
You can get a replacement fob with a programmer so no need to go to a dealer. About $65 on Amazon.

 

One option is to be happy they're working at all. In many if not most cars this age, they aren't, and owners are just ignoring the light. This system is a PTA once the OE sensors quit, which is always inconveniently between tire replacements. Installing new ones at replacement is futile because so many fail LONG before the OE's did.

Your case proves the quantitative readings aren't all that accurate anyway, but at least you'll get a warning of a flat.

I don't like relying on the monitors too much and periodically check the tires with a good gage. And I can tell from road feel when a tire is running low before the barely-noticeable dummy light activates, anyway.

 

I did provide an owner’s manual link in post #2.


I recommend checking tire pressure every fill up or once a week when you check your oil and coolant level, the TPMS is not that accurate and not to be used as a tire pressure gauge