TPMS Fail, Relearn not working

[oesman]

Hey Guys,

I was on about a 1hr drive and half way through my TPMS threw a fault and showed all four tires as "-" not reading. I figured it just needed a re-learn though I've never seen it just cut out completely before. I've seen one sensor go out before, but I replaced it with OEM from the dealer and did a re-learn as per manual several months ago. This time a re-learn doesn't do anything :(.

Is there a central module that controls the TPMS somewhere? I'm assuming that's the issue since all four aren't responding and relearn doesn't work.

UPDATE: Found the issue. Using engineering mode you can see the readings from sensors even during a fault. The engineering mode showed that the driver side wheel is at 142psi :-0. Pretty sure that's wrong ;-). Going to swap it out tomorrow. That's also why the re-learn wouldn't work since I was starting on that wheel. Last time I had a sensor fail the other wheels still showed pressure w/o engineering mode, which is why I thought it was a bigger issue.

[Greg@PacePerformance]

Yes it is the RCDLR module (Radio Control Door Lock Receiver module)
It also controls your locks.
20803735 - $64.08 would need to be programmed by a dealer once installed in your car

[oesman]

Yes it is the RCDLR module (Radio Control Door Lock Receiver module)
It also controls your locks.
20803735 - $64.08 would need to be programmed by a dealer once installed in your car

Thanks Greg! I was trying to figure it out on alldata 0_o.

Any way to program it with HP Tuners? Or dealer only? I guess what I'm asking is if this is part of the VCM, and if my tune will affect it in any way. Also should I take the tune off?

[terryscott621]

I had one sensor go bad and at first it only read high for the one bad sensor. After a few days all of them went to a blank reading just as you're saying. I ended up getting the one bad sensor replaced and all was good. I'm thinking you just need to figure out which sensor is bad and have it replaced and you'll be good.

[Greg@PacePerformance]

I had one sensor go bad and at first it only read high for the one bad sensor. After a few days all of them went to a blank reading just as you're saying. I ended up getting the one bad sensor replaced and all was good. I'm thinking you just need to figure out which sensor is bad and have it replaced and you'll be good.
I also think this might be your issue.
I put some drag radials on over the weekend and they don't have the TPMS sensors so after driving a few miles I got a message about the tire pressure and all sensors were just --

Thanks Greg! I was trying to figure it out on alldata 0_o.

Any way to program it with HP Tuners? Or dealer only? I guess what I'm asking is if this is part of the VCM, and if my tune will affect it in any way. Also should I take the tune off?
VCM will not work

Remote Control Door Lock Receiver Programming and Setup
Important:

•When replacing the remote control door lock receiver (RCDLR), the tire pressure monitoring (TPM) information can be learned to the new RCDLR in one of two ways. These two methods are reflected in the selections below. Only choose one of the methods; it is not required to do both methods when replacing the RCDLR.
•If you choose to perform the Copy and Paste TPM Information procedure, Step 1 must be performed BEFORE removing the old RCDLR. This procedure requires that specific TPM information be extracted from the old RCDLR prior to its removal.
Remote Control Door Lock Receiver Replacement — Copy and Paste TPM Information
This procedure will learn the TPM information to the new RCDLR using the Copy and Paste function on the scan tool. This procedure will extract the TPM Tire Type information as well as the sensor data from the existing RCDLR prior to its replacement and store this information in the scan tool. After RCDLR replacement and SPS programming, the tire type and sensor data stored in the scan tool is written to the new RCDLR, negating the need to perform the tire type setup and sensor learn procedure.

This procedure should be considered as the first programming choice when replacing an RCDLR. The Copy and Paste procedure eliminates the possibility of incorrectly inputting the tire type or learning stray TPM sensors.

Important: This step must be performed prior to the removal or replacement of the old RCDLR.

 1. Using a scan tool, navigate to the Copy and Paste TPM Information procedure and copy the existing TPM information from the RCDLR using the outline below. Follow the on-screen instructions after selecting Step 1:
◦Vehicle Control Systems
◦Module Setup
◦Remote Control Door Lock Receiver
◦Copy and Paste TPM Information
◦Step 1
 2. At this point, install the new RCDLR.
 3. Program the RCDLR – Refer to Service Programming System (SPS).
 4. Using a scan tool, navigate to the Copy and Paste TPM Information procedure to paste the stored TPM information using the outline below. Follow the on-screen instructions after selecting Step 2:
◦Vehicle Control Systems
◦Module Setup
◦Remote Control Door Lock Receiver
◦Copy and Paste TPM Information
◦Step 2
 5. Program the keyless entry transmitters – Refer to Remote Control Door Lock Transmitter Programming.
Remote Control Door Lock Receiver Replacement — TPM Sensor Learn
This procedure will learn TPM information to the new RCDLR by manually inputting the tire type using the scan tool and performing the TPM sensor learn. This procedure should be performed if the above Copy and Paste procedure can not be completed. An example of this would be an RCDLR that is unable to communicate with the scan tool and is required to be replaced.

 1. RCDLR Programming—Refer to Service Programming System (SPS).
 2. Keyless Entry Transmitter Programming—Refer to Remote Control Door Lock Transmitter Programming.
 3. Tire Type Setup:
3.1. Install a scan tool.
3.2. Select Remote Control Door Lock Receiver under Module Setup in the Vehicle Control System menu.
3.3. Select Tire Type/Pressure Selection.
3.4. Follow the on-sceen instructions.
 4. Tire Pressure Monitoring Sensor Learn—Refer to Tire Pressure Indicator Sensor Learn.

[oesman]

Thanks guys!

How would I test which sensor failed? They all disappeared at once. Granted I suppose one may have read wrong during the drive after I left the house (I wasn't in that screen after leaving.)

@Greg,

So when the scan tool is used, am I going to have any issue with my custom tune? I also need to do the airbag recall which I think also uses that tool.

[Greg@PacePerformance]

Thanks guys!

How would I test which sensor failed? They all disappeared at once. Granted I suppose one may have read wrong during the drive after I left the house (I wasn't in that screen after leaving.)

@Greg,

So when the scan tool is used, am I going to have any issue with my custom tune? I also need to do the airbag recall which I think also uses that tool.

I'm not sure how to know which one might have gone bad.

No the dealer will not NEED to mess with the ECM or TCM to reprogram the RCDLR module or the airbag module, but you might want to program it to stock just incase if you can.

[oesman]

Greg,

Thanks. Yea I took a snapshot of the tune I got from g-force. I have hpt so I can flash to stock real quick. Appreciate the help!

-------------

UPDATE: Found the issue. Using engineering mode you can see the readings from sensors even during a fault. The engineering mode showed that the driver side wheel is at 142psi :-0. Pretty sure that's wrong ;-). Going to swap it out tomorrow. That's also why the re-learn wouldn't work since I was starting on that wheel. Last time I had a sensor fail the other wheels still showed pressure w/o engineering mode, which is why I thought it was a bigger issue.

[ClassicPhysique]

I just had the same problem tonight. I had some new tires and rims installed with sensors I had bought several years ago. I will see what the readings are when I'm in engineering mode.

[Maxspeed96ct]

Sorry to bump an old thread, but did you ever figure out which one is bad?

I tried doing the relearn procedure and I get to the right rear and it won't give me the honk conformation when I let air out.
Is it safe to assume that's the bad one ?

Also can anyone confirm the right part number ? I see a few gm tire sensors I want to make sure I get the right one

[-Ray-]

Sorry to bump an old thread, but did you ever figure out which one is bad?

I tried doing the relearn procedure and I get to the right rear and it won't give me the honk conformation when I let air out.
Is it safe to assume that's the bad one ?

Also can anyone confirm the right part number ? I see a few gm tire sensors I want to make sure I get the right one

I assume you are going to fix the offending sensor. Any dealer or tire shop can tell you which one is bad.