I have a 2007.5 Silverado 3500HD SRW LMM with the tire pressure monitoring (TPM) system. My question is what is the lowest pressure that the TPM system can be set at? Reason I'm asking is that I will be running 54" Boggers soon and they have a max psi of 25. I'll probably run them at 18-20psi. Can the TPS system be programmed to read this low or not? If so, I will retrofit the sensors into my 20x16 Stazworks custom wheels, but if not, I will not waste my time. Any input?

IMHO Ditch the sensors, with all of the custom work done to your truck they will not work properly. And they were originally installed for a factory truck and its specifications.

They weren't designed for only stock trucks, so to speak. All they are is a wireless sensor that reads the pressure and relates it back to the computer. They have no clue whether the truck is stock or not. It's not like they have a brain and eyes and are gonna say "I'm not gonna work because your truck is modified. Not on my watch!!" lol

I'm not sure whether or not they can be set that low, but I would give it a shot. No sense in getting rid of something you can make work. What would be even cooler than a new Silverado on 54's is a Silverado on 54's that will still tell you what the pressure is in each tire.

the sensors may or may not work with your aftermarket wheels. sometimes they will just kinda depends on the wheel design as to weather or not the signal from the sensor can be recieved by the rcdlr. they seem to be extremely finiky at times. i don't like them imo!

the lowest that the tire monitor can be set at is 25psi

Sure they will still work but, whats the point it you are going to run less that 25 psi? They will automatically transmit the low pressure light. What I ment in my last post is they were originally sesigned and calibrated for a stock vehicle, not they that wont work to any trucks that are modified.

the lowest that the tire monitor can be set at is 25psi


If the sensors are set for 25 psi, at what lower pressure would the sensors set off the warning light on the DIC? For instance, if they are set to read 25psi as the standard, would 22, 20, 18psi set them? Or is it a percentage deal. Like 5% of the set point or something. How low do they allow the pressure to go before setting off a warning light. Hell I know my stock tires can vary as much as 5 psi from day to day. I can make the sensors fit in my wheels I'm sure. I'm just really not wanting to have to deal with the light being on all the time if I don't install them in the wheels. I agree that I would prefer not to have to mess with them. But I would like to keep the dash light/message off.

Sure they will still work but, whats the point it you are going to run less that 25 psi? They will automatically transmit the low pressure light. What I ment in my last post is they were originally sesigned and calibrated for a stock vehicle, not they that wont work to any trucks that are modified.

The reason to try to make them work is to keep as many dash lights/messages off as possible. I'm 99% certain that we have the wheel speed sensor situation and abs systems figured out, so those lights shouldn't be on I hope. I don't really care about knowing the pressure in each tire, I'm just trying to keep the dash lights/messages off much as possible. I know I can make them fit in my wheels, but I don't want to waste the time installing the sensors if they won't work.

take out the sensors and save everybody at the tire shop a few hours of putting in band sensors that may never work properly any way.

Tire Pressure Monitor Description and Operation

The tire pressure monitor (TPM) system warns the driver when a significant loss of tire pressure occurs in any of the 4 tires, and allows the driver to display the individual tire pressures, and their locations on the driver information center (DIC).
The system uses the powertrain control module (PCM), instrument panel cluster (IPC), DIC, remote control door lock receiver (RCDLR) a radio frequency (RF) transmitting pressure sensor in each wheel/tire assembly, and the serial data circuit to preform the system functions.
When the vehicle is stationary the sensor's internal accelerometer is inactive, which puts the sensors into a stationary state. In this state the sensors sample tire pressure once every 30 seconds and do not transmit at all if the tire pressures do not change. As vehicle speed increases, centrifugal force activates the sensor's internal accelerometer causing the sensors to go into rolling mode. In this mode the sensors sample pressure once every 30 second and transmit in rolling mode once every 60 seconds. The RCDLR receives and translates the data contained in each sensor's RF transmission into sensor presence, sensor mode, and tire pressure. The RCDLR sends the tire pressure and tire location data to the DIC via the serial data circuit where they are displayed as follows:
• LF TIRE XX PSI
• RF TIRE XX PSI
• RR TIRE XX PSI
• LR TIRE XX PSI
The sensors continuously compare their last transmitted pressure to their current pressure sample and will transmit in re-measure mode if a 8 kPa (1.2 psi) change in tire pressure has been detected in either a stationary, or rolling state. When the TPM system detects a significant loss of tire pressure, the CHECK TIRE PRESSURE message is displayed on the DIC and the low tire pressure indicator is displayed on the IPC. Both the message and indicator can be cleared by adjusting the tire pressures to the recommended kPa/psi. The sensor’s pressure range is 0-102 psi. The sensors pressure accuracy from--10 to +70 degrees C is +/- 13.7 kPa (2 psi). Refer to Vehicle Certification, Tire Place Card, Anti-Theft, and Service Parts ID Label (http://service.gm.com/servlets/CellHandler?CellId=135383&RefDoc=1857457&evc=sm) .

hope that sheds some light

Does anyone know if you can get chrome valve stems for the sensors. Thanks in advance. :) Mike

Does any one know how to reset the sensers to a lower pressure?? Stock is set at 80psi while my new tires are 50psi. Dealer want $100 to reset them. I already tried to relurn tire locations but didnt work. Any help??

Does any one know how to reset the sensers to a lower pressure?? Stock is set at 80psi while my new tires are 50psi. Dealer want $100 to reset them. I already tried to relurn tire locations but didnt work. Any help??
you will need a tech 2 to do it.

$100 to re-program the TPM. :( -Dealers are going to love the TPM. More electronic crap that I don't need. -:t One more reason I'm glad my truck is 2006 LBZ.