[Bulldog SS]

A quick update: EVERY aftermarket item removed and they thought they had it fixed. Drove it 1 day before it triggered the tire pressure again. I'm really fed up.


Anyone know if that feature can be turned off? I know it wouldn't be user accessible.


Oh, I told a story. Aftermarket floor mats and black vinyl over the gold bow ties are still installed.

[TXCSSU]

Originally Posted by Bulldog SS

A quick update: EVERY aftermarket item removed and they thought they had it fixed. Drove it 1 day before it triggered the tire pressure again. I'm really fed up.


Anyone know if that feature can be turned off? I know it wouldn't be user accessible.


Oh, I told a story. Aftermarket floor mats and black vinyl over the gold bow ties are still installed.

Personally I'd reach out to a regional service manager and let them know what's going on. Let them know your concerns about your warranty as well. Although, I've been told by service advisors that if you had an issue while it was under warranty and the issue returns after the warranty expires that they will still attempt to fix the issue. Only concern I'd have is if the dealership tries after the warranty and decides it's their last attempt, you're still out of luck.

[Bulldog SS]

The dealer has already had GM involved. The sent an "engineer" down in December and the local service manager is already letting him know it was not corrected. I think he's out of ideas.

[TXCSSU]

Originally Posted by Bulldog SS

The dealer has already had GM involved. The sent an "engineer" down in December and the local service manager is already letting him know it was not corrected. I think he's out of ideas.

I wonder what would happen if you took one from one wheel/tire and installed it where the defective one is. At least it will let you know if it's a location based issue or if there's truly something going on with that specific sensor. From the brief description you're giving it seems as though something may be operating on the same channel that the module uses to receive its signal from the one tire. Have they replaced the central computer that decodes the signal from the TPMS?

[Bulldog SS]

The have replaced it several times in that tire in the beginning of the process and , I think, moved them around. I don't think they have replace in major computer components but they tried relocating the unit that receives the signal from the tire. The way it was described to me, it is located in the right rear of the car and they made an extension cable to test it in another location.

[ember1205]

Originally Posted by Bulldog SS

The have replaced it several times in that tire in the beginning of the process and , I think, moved them around. I don't think they have replace in major computer components but they tried relocating the unit that receives the signal from the tire. The way it was described to me, it is located in the right rear of the car and they made an extension cable to test it in another location.

Is there only a single receiver in the car, or is there one at each corner? I supposed it could be done with one receiver, but wouldn't that require a fair amount more battery power to ensure the signal would transmit that far instead of just a couple of feet (with receivers located more closely to the wheels)?

[Bulldog SS]

I agree with your opinion but what they have told me is that the one receiver is located near the right rear. I do not know this to be fact if anyone has better information.

[Blobby]

This seems super strange. I don’t think it really matters if there’s one or multiple receivers if you troubleshoot right. All the info is a little scattered on this thread, so let me recap what I understand so far.

1) reset system, no change
2) rotate tires, problem followed the problem wheel.
3) new sender inside the tire, no change
4) reposition receiver, no change

5) only other thing would be the order they’re paired with the vehicle. Maybe this problem one has always been done last and the computer doesn’t like having a 4th sensor.

Other than that all I can think of is some kind of freak mistake when forging the wheel or making the tire… like it has some RF blocking characteristics. I really can’t think of anything else.

[Bulldog SS]

Changing the physical wheel is about the only thing that I think they haven't done. I don't know what the reporting rate is supposed to be but they said that wheel is much slower than the others (something like 1/60th of the amount of times).


The other thing that I think is a wiring harness problem but that it continues to reset and seems worse/better/worse over time doesn't go along with a breaking wire.

[ember1205]

Originally Posted by Blobby

I don’t think it really matters if there’s one or multiple receivers if you troubleshoot right.

While that's a true statement, it doesn't mean that it's reasonable to use only a single receiver. It also doesn't mean that it can be accurately troubleshot in some circumstances.

If you use a single receiver and it's located at one corner of the vehicle, the spec for transmission output for the TPMS devices will need to be high enough to travel the full distance from the opposite corner (wheel) to the receiver AND there will have to be a guarantee of no radio interference in the path. Even using TWO receivers (one in the middle at the front and similar at the rear) allows for a significant reduction in transmission power of the TPMS sensors AND a higher likelihood of no interference of radio signal along the path. Using a small receiver at each corner would seemingly provide the best battery life for the sensors along with the highest certainty of correct functionality.

Proper troubleshooting of a bad design still leaves a bad design... I'm curious to understand if the design is factoring in here.

[ember1205]

Originally Posted by Bulldog SS

Changing the physical wheel is about the only thing that I think they haven't done. I don't know what the reporting rate is supposed to be but they said that wheel is much slower than the others (something like 1/60th of the amount of times).


The other thing that I think is a wiring harness problem but that it continues to reset and seems worse/better/worse over time doesn't go along with a breaking wire.

Swapping the front tires should be all that's needed at this point to understand if the issue remains at the location or if it follows the wheel.

Why would it be wiring harness related? Unless there's a dedicated receiver at that corner of the car, it shouldn't matter... No?

[Blobby]

Originally Posted by ember1205

While that's a true statement, it doesn't mean that it's reasonable to use only a single receiver. It also doesn't mean that it can be accurately troubleshot in some circumstances.

If you use a single receiver and it's located at one corner of the vehicle, the spec for transmission output for the TPMS devices will need to be high enough to travel the full distance from the opposite corner (wheel) to the receiver AND there will have to be a guarantee of no radio interference in the path. Even using TWO receivers (one in the middle at the front and similar at the rear) allows for a significant reduction in transmission power of the TPMS sensors AND a higher likelihood of no interference of radio signal along the path. Using a small receiver at each corner would seemingly provide the best battery life for the sensors along with the highest certainty of correct functionality.

Proper troubleshooting of a bad design still leaves a bad design... I'm curious to understand if the design is factoring in here.

True, I think that one receiver would be a bad design, but my assumption is that it SHOULD work perfectly either way GM decided to go. I’m thinking in terms of troubleshooting for a problem within a functional system. I’d sure hate for something as common as TPMS to be faulty on a new car… but wouldn’t count it out.

[ember1205]

Originally Posted by Blobby

True, I think that one receiver would be a bad design, but my assumption is that it SHOULD work perfectly either way GM decided to go. I’m thinking in terms of troubleshooting for a problem within a functional system. I’d sure hate for something as common as TPMS to be faulty on a new car… but wouldn’t count it out.

Given that GM requires reprogramming of the TPMS after tire rotations, it would seem that the car does NOT contain a design that affords it any sort of ability to understand on its own that the wheel has moved positions. My Acura and Honda vehicles have never required reprogramming like this as their system reads in a way that it understands which corner a wheel is at.

GM does a lot of pretty stupid things with design, so I wouldn't put it past them to have designed this system with a single receiver and no way to detect the specific corner that a wheel is at. Either that, or they were trying to bake in required costs for the owner so that the dealerships could charge more for unnecessary services. Neither reason makes any sense...

[Sindri]

I went through the Lemon Law process on my 2021 Camaro with only ~1300 miles on it. I have a thread about it somewhere on here, but the long and short for me was - motor blew up at 500 miles, replacement motor dropped a valve 100 miles later, and then I kept finding shitful repair work (parts missing, parts damaged, etc.). I finally got tired of taking it back to have them fix their screw ups and lemon lawed it.

Lemon law is HIGHLY state dependent. I live in Virginia and we have one of the most aggressive, favorable (for consumers) lemon laws. I'm not sure how Georgia compares. But VA does have a service at the states attorney general's office where you pay like $20 and get a 1/2 hour consultation with an attorney about your lemon law claim. I wish I had done that, in stead I went through GM and the BBB. I ultimately got it resolved but it took forever! If you're thinking about doing a lemon law, see if your state offers something like this. Otherwise, if I had to do it over again, I'd probably have gone straight to an attorney. In Virginia, attorneys can claim expenses related to handling your case, so it's typically no money out of pocket.

Also, understand what your potential outcomes are. Replacement is an option but a lot of times the manufacturer gets to choose how to compensate you and they probably aren't going to replace your 2017 with a brand new 2022/2023. I'm also not sure how much input you get with regards to the replacement (i.e. will it be identical, or same value with different options, can you get the same color, etc.) Regardless, with the inventory shortages GM is highly unlikely to replace your car. I bought my car at the end of 2020 and by the time my case got adjudicated in mid-2021 the inventory shortage was in full swing and they simply didn't have a car to replace mine with even though that's what I wanted. What they did instead was refund me, less depreciation, which they based on mileage. It was something like 24 cents per mile, so I was refunded my full amount less about $300.

If you're really sick of it, and the way car values are right now, you'd probably do better selling it or trading it in to Carvana than taking a lemon law buyback (depending on mileage or how depreciation is calculated).