2018 Yukon Denali question

[Nyjetfan21]

I have a 2018 GMC Yukon Denali. My wife told Yesterday my dashboard displayed a message saying service tire monitor system. When I got home, I went over to the car and I looked at the dashboard and scrolled to the tire pressure and there was nothing now for one of the tires meaning a pressure reading. Does anybody know what this could be and how to fix it? Here are a couple of pictures of what it said. any help is greatly appreciated. Thank you very much.

 

[Fless]

Likely a dead tire pressure sensor in the wheel.

 

[Nyjetfan21]

Is that easy to fix and how do I know for sure if that’s the problem could it be anything else?

 

[B-train]

Is that easy to fix and how do I know for sure if that’s the problem could it be anything else?

You'll need access to a tire machine and balancer. Then use a tool to activate the new sensor when installed on the vehicle, or go through the relearn process for all 4 with the key fob/corner light/horn honk/ air pressure adjustment.

Either way is easy. Get the OEM sensor for $60. The aftermarket ones seem to have ****** batteries that don't last long.

Remember, once one goes, the others aren't far behind. Your wife can live with the light, won't hurt a thing (I've been canceling that message for a year now one mine because one of the new old stock GM ones pooped the bed after 6 months......go figure). I'd wait until you need new tires and then put all 4 new in at the same time.

 

[Nyjetfan21]

Just a heads up I already got new tires on the car about a year and a half ago. So how do I do the relearn process? If I read that correctly, I could do it with the key fob. Not sure if that’s what you meant or do I need to buy that tool

 

[GMCChevy]

You need a relearn tool to do it. They're cheap on amazon.

 

[Fless]

When you had new tires put on, were the TPMS sensors replaced? You may need to see your tire shop for a new sensor.

You can find info about your TPMS in the owner's manual; find yours here:
2018 GMC Yukon Owner's Manual

Download it for reference and search the term "TPMS" (without the quotes).

 

[Nyjetfan21]

When you had new tires put on, were the TPMS sensors replaced? You may need to see your tire shop for a new sensor.

You can find info about your TPMS in the owner's manual; find yours here:
2018 GMC Yukon Owner's Manual

Download it for reference and search the term "TPMS" (without the quotes).

I did not have the tire sensors replaced. They look pretty easy to replace yourself. By any chance, do you know a link where I could get the replacement sensors for a good price?

 

[Nyjetfan21]

If I decide to go the route and do it myself and change the sensor after I break the bead on the tire on one side. Do I have to put any type of glue back around the edging of the tire to seal it when I put air back into it. I would be doing this from home, of course. And I would just put a block of wood on the tire after I took it off and put a scissor jack on it next to the tire valve. And break the bead so I can get to the valvestem and sensor.

 

[Fless]

It wouldn't hurt to use a little soapy water to help seal the bead when you re-inflate it, but it can be done dry. A spray bottle with dish detergent mixed in will help lubricate the bead and can be used afterward to verify no leaks from the bead.