Yes. Don’t know what they were. Maybe on the receipt if I still have it.

 

Well RATS! One of the ACDelco sensors I replaced in Feb failed already! When I broke the tire down to replace it again, all that was there was the valve stem! The sensor itself had come unscrewed and fell off. I didn't know I was supposed to tighten that #10 Torx screw that holds the sensor onto the valve stem before I installed them but I should have. The missing pieces (the screw and the sensor) are floating around inside the tire. Seems like the sensor should have been transmitting even if it wasn't attached but the DIC let me know it had stopped reporting.
I've got a 2015 Malibu coming on Sept 19th to replace this 2009 HHR with only 61k miles on it and I'm looking to sell it ASAP to make room for the Malibu in my driveway.

 

The tire stores claim that is why they charge so much to change them. They are supposed to be torqued with a special micro inch ounce screwdriver tool. Virtually nobody does.

 

I expected the factory to torque the screw to specs when they mated the sensor to the valve stem. If they're not doing that, they should ship it in pieces so the installer would know it's their job - I sure didn't know I had to recheck their work before installing them.

 

"If you didn't do it, check it. If you did it, recheck it" Ancient Chinese proverb.

 

A very interesting read lol. I am thinking of changeling my TMPS on my 2011 when I do the winter tire swap over !
They have never been changed ! May be a good time to 86 them lol
Found a great price on Amazon
Could not find AC Delco ones on Rock Auto

 

I have installed these in my summer and winter wheels in my 2011, they work and are a great price. They are a superseded part number

https://www.ebay.ca/itm/353680390005...mis&media=COPY

They got here in 2 weeks

 

Those are the ones I ordered and used. See my reply #16 above.
Be sure to check the screw for tightness before installing them.

 

Thank You Moon I read that part about it falling apart ! But a GREAT reminder !

 

I see Harbor Freight doesn't sell the tire bead breaker I bought just a few months ago. They're replaced it with the one shown here. I paid $50 and see the new price is $80. Be sure to use your coupons!
My tires were so stiff, I had a hard time just breaking the outside bead and forcing the tire down enough to allow me to get the screw out of the old ones so you can pull the old stem out to make room for the new valve and sensor.
https://www.harborfreight.com/bead-breaker-58769.html