Are Trailer Tire Pressure Monitors Addable After the Fact

[WalleyeMikeIII]

My dealer accidentally forgot to order the Trailer Tire Pressure Monitors (RPO = PTT) on my 2022 Yukon XL Denali with Max Trailering Package. (no dealer bashing here, not why I am posting, they offered a re-order, and I declined, so its on me).
That said, wondering if anyone knows if these can be added after the fact?
Do I just need to add the sensors for the trailer tires, do I need to add a module, is it impossible? Looking for any real world answers.

Dealer said it would require a module, a wiring harness, and an antenna, all of which are NOT included on my particular vehicle.
Other Online Info says as long as you have the Pro Grade Trailering Equipment (RPO = UET), all you need is the sensors.
Net, just looking to know if anyone has successfully hooked up trailer tire pressure monitors without having ordered them from the factory.

 

[genestoy]

Same thing happened to me as the dealer forgot to add the sensors $50 to the order. My dealer tells me no problem he will just get the sensors from parts and include them with the deal as the Trailering package has the app already.

According to GMC
Trailer Tire Pressure and Temperature Sensors
$50

• Set of 4 sensors
• Sensors will be shipped loose with the vehicle and will need to be installed on trailer by customer
• Additional or replacement sensors are available as GM Accessory
• System is capable of monitoring up to 6 wheels
• May require additional optional equipment

 

[WalleyeMikeIII]

Same thing happened to me as the dealer forgot to add the sensors $50 to the order. My dealer tells me no problem he will just get the sensors from parts and include them with the deal as the Trailering package has the app already.

According to GMC
Trailer Tire Pressure and Temperature Sensors
$50

• Set of 4 sensors
• Sensors will be shipped loose with the vehicle and will need to be installed on trailer by customer
• Additional or replacement sensors are available as GM Accessory
• System is capable of monitoring up to 6 wheels
• May require additional optional equipment

I was hoping that was the answer, but my dealer says no…and I can’t get anybody at GM to answer me straight

 

[genestoy]

I called my dealer GSM today and posed the question again and said he would contact GM, he called me back an hour later and confirmed that "if" the vehicle was ordered with the Max Trailering package that everything is there in the vehicle and only needs the GM sensors mounted in the ytrailer wheels to work.

If somebody here has the Max Trailering package without the tire sensors and can confirm that the app works (like waiting for input from the sensors) that would confirm that everything is there?

 

[WalleyeMikeIII]

I’ve got all that. Max Trailering, Denali Premium, Advanced Capability. My boat is in storage, so cannot answer if connecting it will yield the tire pressure learn procedure or not. Gotta wait for spring for that!!! I do hope you are right!

 

[ekordas]

I’m almost 100% sure that the sensors will work with any vehicle with the prograde trailering system which is part of the Max Tow package. My Sierra wasn’t ordered from the factory with the trailer sensors and I was able to add them no problem.

 

[WalleyeMikeIII]

I’m almost 100% sure that the sensors will work with any vehicle with the prograde trailering system which is part of the Max Tow package. My Sierra wasn’t ordered from the factory with the trailer sensors and I was able to add them no problem.

What year is your Sierra? I want to agree w/ you. My dealer wants to continue to tell me I am SOL. It’s a $150 risk to get the answer! Unless someone can confirm it as so!

 

[ekordas]

My Sierra is a 2020. If you have RPO code ZL6 (prograde trailering system) the sensors will work. “The trailering app that is part of Chevrolet’s Advanced Trailering System and GMC’s ProGrade Trailering System (RPO ZL6) includes a Pre-Departure Checklist, Maintenance Reminders, Trailer Light Test, Trailer Electrical Diagnostics, and Trailer Tire Pressure and Temperature Monitoring.”

 

[StephenPT]

Check out this video - I'll bet if you can get to the screen where he's setting up the trailer tire pressure sensors, then yours will work as long as you buy the sensors and have them installed.

 

[WalleyeMikeIII]

RPO’s have changed a bit and content may differ w/ Yukon vs the pickups. That said, I was told by a parts manager at a different dealer that the key RPO was UET which I have, in addition to the pro grade trailering package. Guess I just need to wait and connect my trailer when I can get it out of storage. That will be the tell.

 

[genestoy]

I just confirmed that if you have the ZL6 (as a poster has already said here) you have everything you need just add the trailer sensors and program them. My order does have the ZL6

 

[ekordas]

The UET code isn’t associated with the trailer tire sensors. That’s the smart trailer integration which basically allows you to connect to compatible high end campers to monitor things like water level and slide out controls. The ZL6 code is the one you want for the tire sensors. My 2021 Yukon order had the ZL6 code and not the UET code. I don’t think you can get the UET without ZL6 so you should be good either way.

 

[WalleyeMikeIII]

Good to know, ZL6 is on my build as well. Now just need to hook up my trailer..tonight it was -3 with a -22 wind chill as I was clearing the driveway…spring seems miles off!

Thanks for all the input.

 

[JPH]

Make sure your dealer sales manager (not the sales person) will add them for $50 for 4. I just bought a 2022 Sierra 1500 Denali Reserve pkg that did not have them on build sheet and the dealer can only get from parts at $300 for 4. They did cut a deal that they cover $100 but since was not on build sheet could not get the $50 factory deal. Dealer said it needs to come from factory since factory can cover the discount price where the local dealer parts desk cannot. I am willing to pay for it but 300 is steep. I am still waiting for them but as others said I expect to be plug and play.

 

[ekordas]

Make sure your dealer sales manager (not the sales person) will add them for $50 for 4. I just bought a 2022 Sierra 1500 Denali Reserve pkg that did not have them on build sheet and the dealer can only get from parts at $300 for 4. They did cut a deal that they cover $100 but since was not on build sheet could not get the $50 factory deal. Dealer said it needs to come from factory since factory can cover the discount price where the local dealer parts desk cannot. I am willing to pay for it but 300 is steep. I am still waiting for them but as others said I expect to be plug and play.

You can buy sets of 4 (yes they're still OEM) for pretty cheap on eBay. I've bought two sets for around $60 each.

 

[WalleyeMikeIII]

Checking back in -- any of you 2022 owners w/ Max Trailering Package towed anything yet? Did the Trailering App prompt if you wanted to set up tire pressure sensors?

My goal: Confirm that even without ordering the Tire Pressure Sensors from factory, that the truck is capable of having them programmed (I will then order some to be installed in my boat trailer tires).

 

[genestoy]

Yes, I got my 22 Yukon SLT 10 days ago with Max Tow, took my trailer tires to the tire shop with the sensors that were purchased at the dealer (not ordered with the Yukon) had them installed, put them back on the trailer, went into the trailer app in the infotainment screen, followed the instructions and started the learning process (manual) let air out of tire one and the Yukon honked twice, went to the second tire let air out and again the Yukon honked twice and was done, worked perfect.

 

[WalleyeMikeIII]

Yes, I got my 22 Yukon SLT 10 days ago with Max Tow, took my trailer tires to the tire shop with the sensors that were purchased at the dealer (not ordered with the Yukon) had them installed, put them back on the trailer, went into the trailer app in the infotainment screen, followed the instructions and started the learning process (manual) let air out of tire one and the Yukon honked twice, went to the second tire let air out and again the Yukon honked twice and was done, worked perfect.

That, my friend, is AWESOME NEWS!!!! Thanks!

 

[genestoy]

I actually had my wife sit in the Yukon watching the screen as some have commented that theirs never honked just the green check mark appeared on the screen for a particular tire that was learned but mine did the green check mark and also honked as it should.
You also need to have the trailers "umbilical cord" connected.

 

[zrlee]

I had a 21’ sierra Denali that came with the trailer sensors. I never installed them on my boat trailer but saw settings for them under the trailering app. Last week I traded that truck in on a 22’ Tahoe with max trailer tow. Additional Sensors were not included so I kept the sensors that came with the truck. There are no settings under the trailer app in my Tahoe like there was in my gmc so I’m not sure if they will work or not. Waiting from response from my dealer.