View Full Version : Are the 2007 tire pressure monitors tire specific?


Kappa-Lac
06-18-06, 12:22 AM
I am buying a set of aftermarket wheels for my 07 escalade. I purchased a set of 2007 tire pressure monitors on ebay to put in the new wheels. Are the monitors tire specific? Can I place any monitor in any tire?

Thanks for the help!

AWF_AXIS
06-18-06, 10:31 AM
I've believe that it doesn't matter. The pressure monitor's use passive (RFID) technology. Each wheel well area has a "reader", and so it "trains" itself on the monitoring for each wheel.

In the older vehicles, you supposed had to go into "tell" the system to re-train itself, but this turned out to be false also. Whenever I rotated the tires on my previous '05 Denali, and it figure itself out after driving it.

The '07 I now have did too, I dropped the rear a bit, and swapped the rears one side to the other. The 1 lb difference I knew it had moved with them. It took about 1/4 mile of driving before it saw the difference, however.

Dave

Kappa-Lac
06-18-06, 11:06 AM
Thanks Dave! I will let you know how it turns out!

Kappa-Lac

hcvone
06-19-06, 06:30 AM
I have a set of 07' sensors I got for my winter wheels, I have to get the relearn process for when i change from summer wheels to winter wheels.

ewill3rd
06-19-06, 07:26 AM
There is only one receiver for the tire pressure transmitters.
Typically it's the same one that is used for keyless entry.
For the last generation it was contained inside the passeger door module, or basically the switch assembly on the passenger's side.
On the 2007 Escalade they use a "remote control door lock reciever" or RCDLR. This is located at the left D-pillar area near the endgate.

When the TPM sensors are installed on the vehicle, you use a programming tool to walk around the car, activate the system and then activate the programmer next to one sensor at a time in a specific order. Each transmitter emits specific ID information and the module identifies that ID with the position on the car if the sequence is done in the correct order.
Transmitters are different from model to model and year to year, so be sure to get the correct ones for your vehicle.

The sensors have to be "trained" if the tires are rotated also so that they are correctly identified by the system.

hcvone
06-19-06, 08:01 AM
There is only one receiver for the tire pressure transmitters.
Typically it's the same one that is used for keyless entry.
For the last generation it was contained inside the passeger door module, or basically the switch assembly on the passenger's side.
On the 2007 Escalade they use a "remote control door lock reciever" or RCDLR. This is located at the left D-pillar area near the endgate.

When the TPM sensors are installed on the vehicle, you use a programming tool to walk around the car, activate the system and then activate the programmer next to one sensor at a time in a specific order. Each transmitter emits specific ID information and the module identifies that ID with the position on the car if the sequence is done in the correct order.
Transmitters are different from model to model and year to year, so be sure to get the correct ones for your vehicle.

The sensors have to be "trained" if the tires are rotated also so that they are correctly identified by the system.

What programming tool is needed, I know on the C5's you need a magnet, do you have the training process for the 07's? Thank you

ewill3rd
06-19-06, 08:54 AM
We have a special programmer that activates the sensors, it costs about $600 though.

Let me look at the manual, they usually have a manual training procedure.
Here is the factory procedure.
You can do it manually but you'll have to decrease or increase the tire pressure by 1.2 psi then wait about 20 seconds for the horn chirp.
If you have more questions feel free to ask, not sure when I'll be back on today though..

Tire Pressure Sensor Learn

Tools Required
J-46079 Tire Pressure Monitor Diagnostic Tool

TPM Learn Mode Description
The tire pressure monitor (TPM) system uses the remote control door lock receiver (RCDLR), exterior lamp switch, 4 RF transmitting pressure sensors and the serial data circuit to perform the TPM learn mode functions. The sensor learn procedure must be performed after every tire rotation, RCDLR replacement, or sensor replacement. Once the TPM learn mode has been enabled, each of the sensor's unique identification (ID) codes can be learned in to the RCDLR's memory. When a sensor ID has been learned, the RCDLR sends a serial data message to the BCM to sound a horn chirp. This verifies the sensor has transmitted its ID and the RCDLR has received and learned it. The RCDLR must learn the sensor Ids in the proper order to determine correct sensor location. The first learned ID is assigned to the left front location, the second to right front, the third to right rear and the fourth to left rear.


Sensor Functions using pressure increase/decrease method
Each sensor takes a pressure measurement sample once every 30 seconds while in stationary mode. If the tire pressure increases, or decreases by more than 1.2 psi from the last transmitted pressure, another measurement will occur immediately to verify the change in pressure. If a pressure change has indeed occurred, the sensor transmits in re-measure mode. When the RCDLR receives a re-measure mode transmission while in TPM learn mode, it will assign that sensor's ID to the location on the vehicle relative to the order in which it was learned.


Sensor functions using J-46079
Each sensor has an internal low frequency (LF) coil. When the J-46079 is used in activate mode it produces an LF transmission that activates the sensor. The sensor responds to a LF activation by transmitting in learn mode. When the RCDLR receives a learn mode transmission while in TPM learn mode, it will assign that sensor's ID to the location on the vehicle relative to the order in which it was learned.


TPM Learn Mode Cancellation
The learn mode will cancel if more than 2 minutes have passed and no sensor have been learned, or if more than 5 minutes has passed for the entire procedure. If the learn mode is canceled before any Ids are learned, the RCDLR will remember all previously stored Ids and their locations. As soon as the RCDLR learns the first ID, all other Ids are erased from the RCDLR's memory.

Important: Before proceeding with the steps below, ensure that no other sensor learn procedure is being performed simultaneously, or that tire pressures are not being adjusted on a TPM equipped vehicle within close proximity.

Turn ON the ignition, with the engine OFF.
Apply the parking brake.
Important: If the learn mode cannot be enabled, ensure the TPM system is enabled in the RCDLR. Refer to Control Module Setup .

Using the driver information center (DIC), press the vehicle information button until the RELEARN TIRE POSITIONS message displays. If your vehicle does not have the DIC buttons, press the trip odometer reset stem located on the instrument panel cluster until the RELEARN TIRE POSITIONS message displays. If your vehicle has the DIC buttons, press the set/reset button. The horn will sound twice to indicate the TPMs receiver is ready, and the TIRE LEARNING ACTIVE message will display. If your vehicle does not have the DIC buttons, press and hold the trip odometer reset stem until the horn chirps twice and the TIRE LEARNING ACTIVE message is displayed.

Alternate method: Simultaneously press the keyless entry transmitters lock and unlock buttons until a horn chirp sounds or use the scan tool and select Special Functions/Sensor Learn Mode Enable/Enable soft key. A horn chirp will sound indication the mode has been enabled.

Caution: Over inflating tires may cause personal injury or damage to the tires and wheels. When increasing tire pressure do not exceed the maximum inflation pressure as noted on the tire sidewall.

Starting with the left front tire, hold the antenna of the J-46079 against the tire sidewall close to the wheel rim at the valve stem location then press and release the activate button and wait for a horn chirp, or increase/decrease the tire pressure for 8-10 seconds then wait for a horn chirp. The horn chirp may occur before the 8-10 second pressure increase/decrease time period has been reached, or up to 30 seconds after the 8-10 second pressure increase/decrease time period has been reached.
After the horn chirp has sounded, proceed as in step 4 for the next 3 sensors in the following order:
• Right front

• Right rear

• Left rear

After the LR sensor has been learned, turn OFF the ignition to exit the learn mode.
After the learn mode has been exited, adjust all tire pressures to the recommended PSI. Refer to Label - Vehicle Certification, Tire Place Card, Anti-Theft and Service Parts ID .

hcvone
06-19-06, 09:12 AM
3rd, thank you. Let me know if it can be done without the tool on the 07's when you get a chance. :)

Kappa-Lac
06-19-06, 09:28 AM
3rd, thank you. Let me know if it can be done without the tool on the 07's when you get a chance. :)

Looks like it can be done with out a tool on the 07's.

Here is the procedure from the owners manual:

Resetting the TPMS Identification Codes
Each TPMS sensor has a unique identification
code. Any time you rotate your vehicle’s tires
or replace one or more of the TPMS sensors,
the identification codes will need to be matched
to the new tire/wheel position. The sensors
are matched to the tire/wheel positions in the
following order: driver’s side front tire, passengers
side front tire, passengers side rear tire, and
driver’s side rear tire using a TPMS diagnostic
tool. See your GM dealer for service.
The TPMS sensors may also be matched to each
tire/wheel position by increasing or decreasing
the tire’s air pressure. If increasing the tire’s
air pressure, do not exceed the maximum inflation
pressure indicated on the tire’s sidewall.
You will have two minutes to match the first tire/
wheel position, and five minutes overall to match
all four tire/wheel positions. If it takes longer
than two minutes, to match the first tire and wheel,
or more than five minutes to match all four tire
and wheel positions the matching process stops
and you will need to start over.
The TPMS sensor matching process is
outlined below:
1. Set the parking brake.
2. Turn the ignition switch to RUN with the
engine off.
3. Using the DIC, press the vehicle information
button until the PRESS V TO RELEARN
TIRE POSITIONS message displays.
4. Press the set/reset button. The horn will
sound twice to indicate the TPMS receiver
is ready, and the TIRE LEARNING ACTIVE
message will display.
5. Start with the driver’s side front tire.
6. Remove the valve cap from the valve
cap stem. Activate the TPMS sensor by
increasing or decreasing the tire’s air
pressure for five seconds, or until a horn
chirp sounds. The horn chirp, which make
take up to 30 seconds to sound, confirms
that the sensor identification code has been
matched to this tire and wheel position.
To decrease air-pressure out of a tire you
can use the pointed end of the valve cap,
a pencil-style air pressure gage, or a key.
7. Proceed to the passenger’s side front tire,
and repeat the procedure in Step 6.
8. Proceed to the passenger’s side rear tire,
and repeat the procedure in Step 6.
9. Proceed to the driver’s side rear tire, and
repeat the procedure in Step 6.
10. After hearing the confirming horn chirp for
the driver’s side rear tire, the horn chirp
will sound two more times to signal the
tire learning mode is no longer active.
Turn the ignition switch to LOCK.
11. Set all four tires to the recommended
air pressure level as indicated on the Tire
and Loading Information label.
12. Put the valve caps back on the valve stems
The spare tire does not have a TPMS sensor.
If you replace one of the road tires with the spare,
the SERVICE TIRE MONITOR message will be
displayed on the DIC screen. This message should
go off once you re-install the road tire containing
the TPMS sensor.

AWF_AXIS
06-19-06, 09:34 AM
I think I need to have a talk with the local tire dude. The whole explanation I got from him was bogus.

I managed to locate an instruction guide for Caddy's in PDF form.

http://www.etools.org/files/public/Tire_Pressure_Monitoring_System_Update_from_GM.pdf

Looks like the Magnet method is easiest.

Dave

hcvone
06-19-06, 09:37 AM
I have that magnet, it was for the C5 Corvette's, don't think it will work for these they are mostly plastic.

hcvone
06-19-06, 09:39 AM
Looks like it can be done with out a tool on the 07's.

Here is the procedure from the owners manual:

Resetting the TPMS Identification Codes
Each TPMS sensor has a unique identification
code. Any time you rotate your vehicle’s tires
or replace one or more of the TPMS sensors,
the identification codes will need to be matched
to the new tire/wheel position. The sensors
are matched to the tire/wheel positions in the
following order: driver’s side front tire, passengers
side front tire, passengers side rear tire, and
driver’s side rear tire using a TPMS diagnostic
tool. See your GM dealer for service.
The TPMS sensors may also be matched to each
tire/wheel position by increasing or decreasing
the tire’s air pressure. If increasing the tire’s
air pressure, do not exceed the maximum inflation
pressure indicated on the tire’s sidewall.
You will have two minutes to match the first tire/
wheel position, and five minutes overall to match
all four tire/wheel positions. If it takes longer
than two minutes, to match the first tire and wheel,
or more than five minutes to match all four tire
and wheel positions the matching process stops
and you will need to start over.
The TPMS sensor matching process is
outlined below:
1. Set the parking brake.
2. Turn the ignition switch to RUN with the
engine off.
3. Using the DIC, press the vehicle information
button until the PRESS V TO RELEARN
TIRE POSITIONS message displays.
4. Press the set/reset button. The horn will
sound twice to indicate the TPMS receiver
is ready, and the TIRE LEARNING ACTIVE
message will display.
5. Start with the driver’s side front tire.
6. Remove the valve cap from the valve
cap stem. Activate the TPMS sensor by
increasing or decreasing the tire’s air
pressure for five seconds, or until a horn
chirp sounds. The horn chirp, which make
take up to 30 seconds to sound, confirms
that the sensor identification code has been
matched to this tire and wheel position.
To decrease air-pressure out of a tire you
can use the pointed end of the valve cap,
a pencil-style air pressure gage, or a key.
7. Proceed to the passenger’s side front tire,
and repeat the procedure in Step 6.
8. Proceed to the passenger’s side rear tire,
and repeat the procedure in Step 6.
9. Proceed to the driver’s side rear tire, and
repeat the procedure in Step 6.
10. After hearing the confirming horn chirp for
the driver’s side rear tire, the horn chirp
will sound two more times to signal the
tire learning mode is no longer active.
Turn the ignition switch to LOCK.
11. Set all four tires to the recommended
air pressure level as indicated on the Tire
and Loading Information label.
12. Put the valve caps back on the valve stems
The spare tire does not have a TPMS sensor.
If you replace one of the road tires with the spare,
the SERVICE TIRE MONITOR message will be
displayed on the DIC screen. This message should
go off once you re-install the road tire containing
the TPMS sensor.


Thank you