TPMS replacement different question

[cabledude]

I have been reading TPMS posts for the last hour, and still not exactly seeing answers to my situation.  Just purchased a used 2020 GMC Sierra 1500 SLT which the build sheet showed came with 20" wheels, but had 18" wheels on it.  This was a sales rep vehicle so can't really get answers why the wheels were switched.  The problem is when I bought it, the TPMS Service screen was on and no tire readings available.  I had the local tire store switch my Trail Terrain tires to the new truck, they said none of the sensors were communicating with their reader.  Took the truck in today to the dealer for an oil change, they had the same issue.  Pulled off one tire, and said there were aftermarket sensors installed and they will not work with the 2020 system?  New sensors are $75 each and with installation was going to be around $600.  I stopped back at the tire shop, they carry a aftermarket sensors on hand, and don't feel like there is any reason they shouldn't work.  Cost is $49.95 each, installed $280ish.  Once a sensor is programmed, can it not be changed to work with another vehicle?  No way I'm spending $600, is the $49.95 price pretty typical?  Is there any reason the newer trucks have to have GM parts to work with the truck TPMS system? (As the dealer says) Looking for any info and suggestions.

 

[Grumpy Bear]

Find a new dealer. 

 

New OEM sensors from Rock Auto are under $45 each. Aftermarket cheaper. SCHRADER brand is often under $20 each.  All available from Rock Auto are preprogramed and just need a relearn. 

 

Most likely cause is the installed sensors are the wrong frequency. 

 

Shouldn't be more than say $20-$25 a wheel to install. Whatever the new tire install price is would be close. $200 - $280 out the door cost is more realistic. 

[swathdiver]

The existing sensors are probably the wrong frequency.  There are compatibility issues and I've had Chrysler sensors in my truck before that worked just fine.

 

You can buy OE sensors for even less than the tire store on Ebay.  Determine which frequency your truck uses, 315 or 433 mhz.  Decode your RPO sheet, I don't know them off hand.

 

Grumpy Bear beat me to it!  He types faster!  LOL

[silveradosid]

they are 433mhz and make sure they are for your year of truck, the new trucks are also 433 but will not work

[jaxcam02]

go on to rock auto or gmpartsdirect or the gm parts site (https://parts.chevrolet.com/?evar25=ch_global-nav_accessories-and-parts) and find the correct part number for your truck. then search that part number on ebay. I consistently find 4 packs of tpms sensors I need (GM or ACDelco brand) for less that $100 bucks.

Edited October 27, 2022 by jaxcam02

[reeseb]

Buy the OEM sensors from the dealer or online and have the tire shop install them.

[cabledude]

I am surprised neither dealer or tire shop could get their tester to communicate, unless they were trying to look for 433MHZ and the wheels have 315. In any case, I will probably end up paying the tire shop to put in theirs if it's in the $280 range installed as they will at least be responsible if something doesn't work.

[jaxcam02]

4 hours ago, cabledude said:

I am surprised neither dealer or tire shop could get their tester to communicate, unless they were trying to look for 433MHZ and the wheels have 315. In any case, I will probably end up paying the tire shop to put in theirs if it's in the $280 range installed as they will at least be responsible if something doesn't work.

Make them test the sensors before installing