Tire Pressure Sensors/nbs Fog Light Kits

silverado34 · October 22, 2007

Guys, I was wondering. I have a 07 NBS Sierra Crew Cab. It came with the chrome covered 17 inch wheels. I bought off Ebay the alloy factory wheels. I was wondering. Can I just take the tire pressure sensors off of the old wheels and put them on the new? How do they attach, to the valve stems, or is it the valve stem and sensor all in one? If it attaches to the valve stem, do I have to get a special valve stem from GMC? One more question, I also want to put factory fog lights on my truck. Does GMC have a fog light kit like they did with the classic trucks?

Ranger · October 22, 2007

I think you'd be better off letting a tire dealer take care of the TPMS...However if the Ebay wheels also have it I don't think you have to change them.

divejoe · October 22, 2007

No fog lights kit available yet. I'm also looking to add them and I can't wait until they make them like for the Classic model. As for now, we just have to wait...crap!

SinisterSS · October 22, 2007

The TPS are built into the valve stem themselves. Take the entire thing out of your old wheels and put them in the new.

eBay photo

binspector1 · October 22, 2007

The TPS are built into the valve stem themselves. Take the entire thing out of your old wheels and put them in the new.

eBay photo

Actually, the TPS attaches to the valve stem with a Torx head brass screw. You can get either the TPS, valve stem, or both from your dealer. Look at the valve stem on the wheels you got off ebay. If the stem has a threaded brass piece at the base of the stem, then you should be able to remove the TPS from the chrome wheels and install them on the Ebay wheels.

Rocco715 · October 22, 2007

The valve stem and sensor are one unit I just changed them for my dad on his C6 vette to a new set of wheels. They slip through the inside and a small fastener holds it on and don't even need to be re-programmed. and no light kits yet.

MS3DALE · October 22, 2007

The valve stem and sensor are one unit I just changed them for my dad on his C6 vette to a new set of wheels. They slip through the inside and a small fastener holds it on and don't even need to be re-programmed. and no light kits yet.

On the Corvette's and past SUV's yes....they are one unit,however on the NBS GMT900 trucks the valve stem and sensor will separate from each other,Heres a bulletin on it.....

Document ID# 1876430

Subject: Information on Recognizing Tire Pressure Monitoring (TPM) Equipped Vehicles/Avoiding Damage to TPM Systems During Tire/Wheel Service and New Replaceable TPM Sensor Valve Stems #06-03-16-003 - (12/06/2006)

Models: 2007 Cadillac Escalade, Escalade ESV, Escalade EXT

2007 Chevrolet Avalanche, Silverado, Suburban, Tahoe

2007 GMC Sierra, Yukon, Yukon Denali, Yukon XL, Yukon Denali XL

The above vehicles have adopted a new style of on-wheel TPM sensor. The full-size utilities changed over to the new sensor, identifiable by black rubber valve stems, during October 2006. This style of sensor no longer has the attaching nut visible on the outside of the wheel.

Notice: Do not try to pull out the valve stems to deflate the tire. The sensor will be damaged by this action.

Recommendations / Instructions:

• The TPM sensor is equipped with the new rubber coated stem. The stem and retaining screw can be replaced with P/N 15263240. When this sensor and stem are in the installed position, you can identify the new sensor by the following characteristics:

• A valve stem cap that is longer than most on the market, which reveals a longer than normal amount of brass when the cap is removed.

• A valve that feels thicker than most on the market.

Important: Spare tires DO NOT come equipped with TPM monitors.

Valve Stem Replacement:

The replacement interval on the revised TPM sensor with replaceable stem is the same as for any other traditional valve stem. Replace the stem at the time of tire replacement, or whenever air seepage is suspected at the valve stem. When replacing the valve stem, tighten the screw to 1.3 N·m (11.5 lb in).

Important: DO NOT replace the entire TPM assembly. ONLY replace the stem during a tire changing event.

Parts Information

Part Number:15263240

Description:TPM Service Valve Kit

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

SinisterSS · October 23, 2007

Just got my extra sensors for the winter wheels today...

silverado34 · October 23, 2007

Thanks guys. I got an extra set of sensors off of ebay. The new wheels did not come with anything. so I am going to use the new senosrs on them.

HI85WH1 · October 23, 2007

Thanks guys. I got an extra set of sensors off of ebay. The new wheels did not come with anything. so I am going to use the new senosrs on them.

A word of caution with installing new sensors with the GMT900 chassis.

IF you change sensors, the computer must be reprogrammed to read the new sensors. (different frequency transmission)

The "relearn" procedure only applies to the tire rotation with the known sensors.

Yes, the TPMS sensors in the 900 chassis pickups have a separate valve stem as indicated. Most all the SUVs now use the same "second version" sensors now.

MS3DALE · October 23, 2007

Heres the procedure out of the service manual......

Document ID# 1856455

2007 Chevrolet Silverado

Tire Pressure Sensor Learn

Special Tools

J-46079 Tire Pressure Monitor Diagnostic Tool

Learn Mode Description:

The Tire Pressure Monitor (TPM) System uses the instrument panel cluster (IPC), body control module (BCM), remote control door lock receiver (RCDLR), keyless entry transmitter, 4 radio frequency 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 learn mode has been enabled, each of the sensors unique identification codes can be learned into the RCDLR 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 sequence 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. The turn signals will individually illuminate indicating which location is to be learned in the proper sequence.

Sensor Functions Using J-46079:

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

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 8.3 kPa (1.2 psi) from the last pressure measurement, another measurement will occur immediately to verify the change in pressure. If a pressure change has indeed occurred, the sensor transmits in Learn mode. When the RCDLR receives a Learn mode transmission while in TPM learn mode, it will assign that sensor ID to the location on the vehicle relative to the order in which it was learned.

Learn Mode Cancellation:

The learn mode will cancel if the ignition is cycled to OFF or if more than 2 minutes has elapsed for any sensor that has not been learned. If the learn mode is cancelled before the first sensor is learned, the original sensor IDs will be maintained. If the learn mode is canceled after the first sensor is learned, the following will occur:

• All stored sensor IDs will be invalidated in the RCDLR memory.

• If equipped, the DIC will display dashes instead of tire pressures.

• DTC C0775 will be set.

These conditions will now require the learn procedure to be repeated for the system to function properly.

TPM Learn Procedure:

Important: Before proceeding, ensure that no other learn procedure is being performed simultaneously or that tire pressures are not being adjusted on another TPM equipped vehicle within close proximity. Stray signals from other TPM equipped vehicles just driving by can be inadvertently learned. If any random horn chirps are heard from the vehicle while performing the learn procedure, most likely a stray sensor has been learned and the procedure will need to be cancelled and repeated. Under these circumstances, performing the TPM Learn Procedure away from other vehicles would be highly recommended. In the event a particular sensor pressure increase/decrease activation does not cause the horn to chirp, it may be necessary to rotate the wheel valve stem to a different position due to the sensor signal is being blocked by another component.

Place the ignition switch in the proper position as follows:

• With standard ignition switch, place the switch in the RUN position.

• With electronic keyless ignition, place the switch in the ACCY position.

Initiate the TPM Learn Mode using one of the following procedures:

• Using a scan tool, initiate the TPM Learn Mode. A double horn chirp will sound indicating the Learn Mode has been enabled. The left front turn signal will also be illuminated.

• On vehicles equipped with keyless entry, simultaneously press the keyless entry transmitters lock and unlock buttons until a double horn chirp sounds indicating the Learn Mode has been enabled. The left front turn signal will also be illuminated.

• On vehicles not equipped with keyless entry, press and release the driver information center (DIC) INFO button until the RELEARN TIRE POSITIONS message appears on the DIC display. Press and hold the SET/RESET button until a double horn chirp sounds and the DIC displays a TIRE LEARNING ACTIVE message indicating the Learn Mode has been enabled. The left front turn signal will also be illuminated.

Starting with the left front tire, learn the tire pressure using one of the following methods:

• Hold the antenna of the J-46079 aimed upward against the tire sidewall close to the wheel rim at the valve stem location. Press and release the activate button and wait for a horn chirp. Once the horn chirp has sounded, the turn signal in the next location to be learned will illuminate.

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.

• Increase/decrease the tire pressure for 8-10 seconds then wait for a horn chirp. The horn chirp may occur before or up to 30 seconds after the 8-10 second pressure increase/decrease time period has been reached. Once the horn chirp has sounded, the turn signal in the next location to be learned will illuminate.

After the horn chirp has sounded and the right front turn signal is illuminated, repeat step 3 for the remaining 3 sensors in the following order:

4.1. Right front

4.2. Right rear

4.3. Left rear

After the LR sensor has been learned, a double horn chirp will sound indicating all sensors have been learned.

Turn OFF the ignition to exit the learn mode.

After the learn mode has been exited, adjust all tires to the recommended pressures. Refer to Vehicle Certification, Tire Placard, Anti-Theft, and Service Parts ID Label .

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

Document ID# 1856455

2007 Chevrolet Silverado

HI85WH1 · October 24, 2007

Heres the procedure out of the service manual......

Document ID# 1856455

2007 Chevrolet Silverado

Tire Pressure Sensor Learn

Special Tools

J-46079 Tire Pressure Monitor Diagnostic Tool

Learn Mode Description:

The Tire Pressure Monitor (TPM) System uses the instrument panel cluster (IPC), body control module (BCM), remote control door lock receiver (RCDLR), keyless entry transmitter, 4 radio frequency 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 learn mode has been enabled, each of the sensors unique identification codes can be learned into the RCDLR 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 sequence 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. The turn signals will individually illuminate indicating which location is to be learned in the proper sequence.

Sensor Functions Using J-46079:

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

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 8.3 kPa (1.2 psi) from the last pressure measurement, another measurement will occur immediately to verify the change in pressure. If a pressure change has indeed occurred, the sensor transmits in Learn mode. When the RCDLR receives a Learn mode transmission while in TPM learn mode, it will assign that sensor ID to the location on the vehicle relative to the order in which it was learned.

Learn Mode Cancellation:

The learn mode will cancel if the ignition is cycled to OFF or if more than 2 minutes has elapsed for any sensor that has not been learned. If the learn mode is cancelled before the first sensor is learned, the original sensor IDs will be maintained. If the learn mode is canceled after the first sensor is learned, the following will occur:

• All stored sensor IDs will be invalidated in the RCDLR memory.

• If equipped, the DIC will display dashes instead of tire pressures.

• DTC C0775 will be set.

These conditions will now require the learn procedure to be repeated for the system to function properly.

TPM Learn Procedure:

Important: Before proceeding, ensure that no other learn procedure is being performed simultaneously or that tire pressures are not being adjusted on another TPM equipped vehicle within close proximity. Stray signals from other TPM equipped vehicles just driving by can be inadvertently learned. If any random horn chirps are heard from the vehicle while performing the learn procedure, most likely a stray sensor has been learned and the procedure will need to be cancelled and repeated. Under these circumstances, performing the TPM Learn Procedure away from other vehicles would be highly recommended. In the event a particular sensor pressure increase/decrease activation does not cause the horn to chirp, it may be necessary to rotate the wheel valve stem to a different position due to the sensor signal is being blocked by another component.

Place the ignition switch in the proper position as follows:

• With standard ignition switch, place the switch in the RUN position.

• With electronic keyless ignition, place the switch in the ACCY position.

Initiate the TPM Learn Mode using one of the following procedures:

• Using a scan tool, initiate the TPM Learn Mode. A double horn chirp will sound indicating the Learn Mode has been enabled. The left front turn signal will also be illuminated.

• On vehicles equipped with keyless entry, simultaneously press the keyless entry transmitters lock and unlock buttons until a double horn chirp sounds indicating the Learn Mode has been enabled. The left front turn signal will also be illuminated.

• On vehicles not equipped with keyless entry, press and release the driver information center (DIC) INFO button until the RELEARN TIRE POSITIONS message appears on the DIC display. Press and hold the SET/RESET button until a double horn chirp sounds and the DIC displays a TIRE LEARNING ACTIVE message indicating the Learn Mode has been enabled. The left front turn signal will also be illuminated.

Starting with the left front tire, learn the tire pressure using one of the following methods:

• Hold the antenna of the J-46079 aimed upward against the tire sidewall close to the wheel rim at the valve stem location. Press and release the activate button and wait for a horn chirp. Once the horn chirp has sounded, the turn signal in the next location to be learned will illuminate.

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.

• Increase/decrease the tire pressure for 8-10 seconds then wait for a horn chirp. The horn chirp may occur before or up to 30 seconds after the 8-10 second pressure increase/decrease time period has been reached. Once the horn chirp has sounded, the turn signal in the next location to be learned will illuminate.

After the horn chirp has sounded and the right front turn signal is illuminated, repeat step 3 for the remaining 3 sensors in the following order:

4.1. Right front

4.2. Right rear

4.3. Left rear

After the LR sensor has been learned, a double horn chirp will sound indicating all sensors have been learned.

Turn OFF the ignition to exit the learn mode.

After the learn mode has been exited, adjust all tires to the recommended pressures. Refer to Vehicle Certification, Tire Placard, Anti-Theft, and Service Parts ID Label .

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

Document ID# 1856455

2007 Chevrolet Silverado

Right.

I have the procedure, and it DID NOT work when the new wheels were installed.

Tire shop tried it, Dealer tried it, I tried it at home. It would only read the LF, then wouldnt read any of the others. I had let almost ALL of the air out of the RF and got no second chirp.

I believe if it was one sensor, it woud relearn. Changing all 4 made it unable to learn as it had no base to work from.

Eventually, the dealer did some research (This was back in March 07) and from what I recall, the dealer had to direct program the frequencies into the PCM (They had a tool to read the frequencies, so they were transmitting)

It's been fine ever since... talk about a learning curve.

Thats what I get for being the first guy here trying to put new rims on his brand new truck.

silverado34 · October 24, 2007

So would it be better to seperate the sensors from the valve stems, and get new valve stems, and use the sensors that came with my truck? If so how expensive are the valve stems alone? And how easy is it to seperate them from the sensors? If so anyone want new sensors and valve stems!!!!!

HI85WH1 · October 24, 2007

So would it be better to seperate the sensors from the valve stems, and get new valve stems, and use the sensors that came with my truck? If so how expensive are the valve stems alone? And how easy is it to seperate them from the sensors? If so anyone want new sensors and valve stems!!!!!

I dont know the Part number for just the valve stems.

I would go this route knowing what I know now...