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I just put new wheels and tires on my '17 C7 GS. I put new GM TMPS sensors in and I used new GM part # 13598775. I used the cheap EL-504488 relearn tool from Amazon. I reprogrammed the new sensors by doing the whole relearn procedure by holding select wile on the tire pressure screen and then relearning all 4 corners in correct order. That works fine, everything syncs up but I drive for 20-30 miles and the front passenger sensor looses connection. I've done the whole process 4 times now and it keeps dropping that front passenger sensor.
Can you guys point me in a direction here? Ant ideas whats causing this?
I had no issues what so ever prior to new wheels and sensors.
Might just be a bad sensor. I'd swap it out. It's pretty easy. You (or tire shop) will just pop the bead right near the sensor, reach in and swap it out. Re-seat bead. Another thing you could try is remove negative battery terminal for a minute and reattach. Maybe the module needs resetting. Worth a try. Also you could try letting them auto-connect. Just drive it for a few minutes. See if that works better.
I have the same tool, it seems to work well. Did you get the double beep when you were done? But like was said, try the automatic relearn. I also had issues with my TPMS system. The front, left and right TPMS switched around. Try putting 20 lbs in one tire and 30 lbs in the other tire and see if they are really reading the correct side.
1609555774[/url]]I have the same tool, it seems to work well. Did you get the double beep when you were done? But like was said, try the automatic relearn. I also had issues with my TPMS system. The front, left and right TPMS switched around. Try putting 20 lbs in one tire and 30 lbs in the other tire and see if they are really reading the correct side.
yeah i’m going to try the reset with disconnecting the battery and see if it will relearn it self
So, I have the same problem, with my 2017 GS. The TPMS system often loses the ability to pick-up the signal from the front passenger tire sensor.
This all started when I got new tires, new TPMS sensors, and new wheels.
I relearned the new sensors, but noticed that the front passenger sensor relearn was stubborn, had to try it many times till it was successful. The new sensors are made by Schrader, part number marked as "13588775", bought from Corvette Garage, clear plastic bags with NO GM labels. So, these are not genuine GM parts, but OEM replacement parts (Schrader is the OEM supplier of this part to GM).
Drove the car after the relearn, and all sensors were reporting the correct tire pressure. After about 20 minutes of driving, the TPMS system could not read the front passenger tire, and --- was displayed, and the TPMS warning light came on.
I reset the BCM DTC (TPMS is done by the BCM), and then a short while later, during another drive, the front passenger sensor did report tire pressure, but then some time later it lost it again, with the TPMS warning light coming back on.
I verified that the problem is not the sensor in the front passenger tire, as I swapped the left and right front wheels, and the problem remains with the front passenger wheel location. This verifies that the problem is NOT the sensors, but the ability of the TPMS system to properly receive the signal from the passenger front wheel location.
I bought a TPMS Diagnostic tool to troubleshoot, and the battery level of all the new sensors is good, and the tool can read the tire pressure fine, so I don't think the new sensors are the problem.
Amazon.com: XTOOL TP150 TPMS Programming Tool, Universal TPMS Relearn/Reset/Activate Tool(315/433MHz), Tire Sensor Programmer for XTOOL TS100 Only, Tire Pressure Monitoring System Diagnostic Tool : Automotive Amazon.com: XTOOL TP150 TPMS Programming Tool, Universal TPMS Relearn/Reset/Activate Tool(315/433MHz), Tire Sensor Programmer for XTOOL TS100 Only, Tire Pressure Monitoring System Diagnostic Tool : Automotive
From reading the GM Service Manual, the RCDLR (Remote Control Door Lock Receiver module has 6 antennas (around the car) that pick up the 433 Mhz radio signals from the 4 TPMS sensors (and also the key-fob remote for unlocking/locking and starting authorization)
The RCDLR is located on the back-wall of the rear cargo compartment, on the interior, covered by the rear trim panel. The RCDLR talks to the BCM (thru a CAN bus), sending it the sensor ID#, the tire pressure, and the sensor battery status. The BCM then determines if the TPMS system is operating correctly (The BCM checks if each sensor transmits to the RCDLR ever-so-often if it detects that the wheels are turning), and sends the tire pressure info to the Instrument Cluster for display.
The RCDLR uses the 6 antennas so it can locate where the key-fob is (outside the car, or inside the car), and the 6 antennas are also used to pick-up the TPMS signals, perhaps aiding the TPMS system to identifying which wheel is transmitting from what location.
The bottom line, is that I believe loss-of-signal strength from the front passenger wheel sensor is the most likely root-cause of the problem, because it is the furthest away wheel from any antenna. I think the different shape of my new wheels block just enough RF signal from the wheel sensor to cause my problem.
My plan of attack is to check the 6 antennas, and perhaps try to move one of them closer to the front passenger tire.
And no, I do not have aftermarket side marker LEDs, or anything like that which can cause RF noise interference to the TPMS.
This problem is extra frustrating, because when a TPMS fault is set, the Active Handling / Traction Control system activation threshold is set to a much lower fail-safe value (in case you really do have low tire pressure), so any slightly spirited driving is curtailed, cutting throttle and perhaps applying some braking.
Last edited by ersatz928; Apr 29, 2026 at 10:15 AM.
The signal from the Tire Pressure sensors (in the tires) is received by the RCDLR (Remote Control Door Lock Receiver), and then the digital data from each sensor is sent to the BCM module, over a CAN bus.
The RCDLR is located on the back-wall of the rear cargo compartment, on the interior, covered by the rear trim panel. The RCDLR talks to the BCM (thru a CAN bus), sending it the sensor ID#, the tire pressure, and the sensor battery status. The BCM then determines if the TPMS system is operating correctly (The BCM checks if each sensor transmits to the RCDLR ever-so-often if it detects that the wheels are turning), and sends the tire pressure info to the Instrument Cluster for display.
The RCDLR uses the 6 antennas so it can locate where the key-fob is (outside the car, or inside the car), and the 6 antennas are also used to pick-up the TPMS signals, perhaps aiding the TPMS system to identifying which wheel is transmitting from what location.
I think the problem is either a bad antenna, or a poor connection to an antenna, OR the RCDLR itself has an internal problem. My plan is to first check the connectors at the RCDLR, to see if there is any corrosion / oxidation of the connectors which go to the antennas. But, my car is now in storage, this will have to wait till springtime 2026.
Mike505: Which new wheels and tires did you put on your GS?
My problems started when I got the Wheel Designers GS01 forged replicas of the stock GS wheels, with Michelin Pilot Sport AS ZP tires.
Maybe a difference in the new aluminum wheel geometry or a difference in the steel belt construction of the new tires might reduce the signal strength of the TPMS sensor, just enough that the TPMS receiver can't reliably pick it up.
Last edited by ersatz928; Apr 5, 2026 at 11:55 AM.
Mike505: Which new wheels and tires did you put on your GS?
My problems started when I got the Wheel Designers GS01 forged replicas of the stock GS wheels, with Michelin Pilot Sport AS ZP tires.
Maybe a difference in the new aluminum wheel geometry or a difference in the steel belt construction of the new tires might reduce the signal strength of the TPMS sensor, just enough that the TPMS receiver can't reliably pick it up.
Great details man. I put the Velgen VF5s on and they are stock sizes with the Continental Extreme Contact tires. The more research i’ve done i’m tracking with you. I think it’s some element of the new wheel and/or tire causing a signal issue.
I swapped my front wheel around just to see if the issue will follow that one wheel to driver side or if the other wheel has the same issue on the passenger side. I’ll see what the outcome of that is the next time i drive the the car.
The biggest issue for me is the traction management is constantly kicking in on me now.
If you crack the code on this let me know.
I’m a little leery about moving the antennas and by doing that throwing off some other calibration and causing some other issues.
Wow good info. If using the aftermarket wheels caused this you'd think there would be more threads reporting it. I'm not doubting that it's the problem. The forged aluminum has different metallurgy so it makes sense. Just that you'd expect to see the problem with more people that use monoblock forged wheels. I can totally see the signal being easier to transmit through the cheap cast aluminum wheels.
I don't think the RF signal reduction through cast aluminum is any different than forged aluminum.
I think it may have more to-do with the angle that the sensor sits relative to wheel axis (and therefore to the antenna), or perhaps the proximity of the sensor to the nearby surface of the adjacent aluminum.
But yes, you would expect this problem to occur with everybody who installed the same aftermarket wheel as me (it is a popular wheel for the C7 GS).
It might be slightly more dense, with no voids like a casting, but when the material is about a quarter inch thick, there won't be any RF line-of-sight thru the material where a void will make a difference. Now if the material were very thin, then there might be more of a difference.
Common Density Figures (g/cm³)
Cast (e.g., A356): ~ 2.68
Forged (e.g., 6061-T6): ~ 2.70
Forged (e.g., 7075-T6): ~ 2.81
I have no recommendation on how to resolve the sensor disconnecting issue, as it could be one of several different issues described in the FSM. Just remember the car is being programmed to recognize the sensors the sensors aren't programmed to the car, the car is programmed to the sensors.
I don't understand why people bother with the reset tools. They aren't required on the C7. Just throw your wheels with the new sensors on the car and go for a drive most of the sensors will be learned within a couple of miles. I had one sensor that went over a hallf day of track time before the car decided to recognize it. I have been swapping sets of wheels several times per year for the last 10 years and the car programmed itself to them every time.
The reason I got the tool, my two front TPMS's were reading the opposite sides. I made the pressure different between the wheels so I could see the different pressures. The right was reading on the left display & visa versa. So I programed them with the program tool. They would be correct until I went for a drive, then they would switch again. I figured if that's the way they wanted to be, so I switched the wheels around. WHAT,, then the would switch to the wrong side again. I have no idea why they still read the wrong side. So I set both to the same pressure and if one gets low, I will still know I have a low tire pressure. I would love to know if anyone else has the same issue.
This all happened after I got new rims and 4 new TPMS's.
Consistent sensor concerns can be quite frustrating, Mike. Our team would like the opportunity to learn more about this investigate ways we can potentially assist with your C7. When you get the chance, please send us an email to socialmedia@gm.com. Be sure to include your Username and Forum name in the subject line, then provide additional details about your experience in the body of the email. We look forward to your contact.
I had the same issue with new wheels also.
New sensors, etc, kept disconnecting 20 minutes into a drive, over and over.
It also triggered a stability control limp mode which was far worse than the tpms issue.
had to replace the sensors on my two front wheels, problem solved.
I think these sensors are just quirky, crappy little electronic devices and sometimes you get a dud.
TMPS Sensor Keeps Disconnecting
