Is there a known issue with th the run flat TPMS sensors giving an inaccurate reading? or failing? I just added nitrogen to my tires a couple of weeks ago and now I have a TPMS sensor reading 5 psi lower than the other tires. When I go check the pressure manually with a good tire pressure gauge, I get the exact same readings on all 4 corners. Do i need to replace that lower reading TPMS? What if I resest the computer?

 

I had a similar problem. The DIC said the tire pressure monitor system needed attention. I had the dash icon also lit up. Wierd part is that I installed new forged wheels, new tires, new GM sensors and they also filled the tires with nitrogen.
I removed the fault code with my programmer but I have a feeling this is gonna come back.

 

Sounds to me like your new tire pressure sensors weren't programmed into your TPMS.

The sensors don't care what kind of gas you fill your tires with - they're going to report the pressure if you have air, nitrogen, propane, helium, hydrogen, or any other gas in the tire.

The TPMS computer memory holds 4 sensor ID#'s. I don't think your current sensors are programmed into the TPMS memory - the old sensors are probably still the ones programmed in.

Bob

 

The tire pressure sensors are pretty accurate.

I don't know why you've got one reading so different from the others. You could have sensor battery going bad, but that usually results in an "xx psi" reading.

But, I'd bet that your sensors aren't programmed into the TPMS memory, or for some reason the data in the memory got corrupted. In either case I think simply reprogramming your sensors might solve the problem.

Bob

 

That's exactly what the DIC was showing - "XX PSI" at all 4 corners.
I would think the people at Discount Tires would know to program the sensors into the TPMS memory. I think I'll take the car back to them this weekend.

 

I've had trouble with the sensors after having tires installed there. I currently get a false "0" pressure warning on occasion (which when I'm heading down the highway at 55mph+ makes me really nervous). And, to make matters worse, they installed the rear rims/sensors on the opposing side so the dic reports the L tire as the R tire and vice versa.

 

I wouldn't take my Corvette to Discount Tires. I certainly wouldn't return expecting them to fix an issue they clearly weren't competent enough to resolve the first time.

San

 

I get all my tire work done at Discount Tire. My local DT does an outstanding job mounting and balancincing, and they are always very careful with the sensors and wheels.

I don't take the Vette there - I always take off the wheels at home and just take the wheels and tires in my wife's SUV.

Maybe they figured you have your own TPMS tool and would program the sensors yourself.

Take it back and I'm sure they'll be happy to do the procedure for you - it only takes about a minute.

Review the procedure so you can put it into the learn mode for them and it won't take any time at all.

Bob

 

so is there a procedure i can access to reprogram/reboot these TPMS sensors myself?

 

RELEARN PROCESS

You put the car in "learn" mode by switching to ACC and holding down the lock and unlock buttons on the fob until the horn honks. The car is now waiting to hear from the left-front tire pressure sensor. You activate that sensor, and the car will honk to confirm. Then RF, RR, and finally LR, after which the car will honk twice. Done.

The prescribed method for "activating" the sensor is with a TPMS tool. You place the tool against the tire at the valve stem and press the button.

 

Mike has the procedure exactly right in his post above.

Below is a video that shows the procedure.

BTW, the 2005-2009 C6 uses one part# sensor, and the 2010 and newer uses a different part#.

The sensors on a 2010, and 2011 made in Dec 2010 or earlier, do not need a TPMS tool - the sensors can be triggered by changing air pressure in the tire.

However, starting in Jan 2011, GM changed the software in the TPMS so that the change in air pressure method won't work in a C6 made from Jan 2011 on.

Bob

 

cool stuff, now where to get one of these TPMS tools? or is it easier to swing by a chebby dealer?

 

Some dealers might do it for free, but there have been reports here on the forum about dealers charging from $10 to as much as &100!!!

Take a look at this GM document:

http://gmspecialservicetools.spx.com...0448_rev_1.pdf

In there they say their new "low cost" tool is available for $43.65, however I went to my local dealer's parts department and they said they could not order tools.

I went to the website at the end of the document several weeks ago and the tool was available for $58.20.

I just went and looked now and it's up to $62.33!!!!

So.....the low cost tool is rapidly going up in price!!

Also, a forum member reported a week or so ago that the tool was on backorder and wouldn't be available for about a month.

Thanks, GM.

Bob

 

First of all, thanks for all the input gang. Much appreciated.

Secondly, I was hoping that when I swapped from visiting FORD dealerships with the Roush to Chevrolet dealers with the C6, that Training, I.Q., and maybe customer service would improve........I'm here to tell ya.......NO.

So to start off, The service advisor was more than happy to get the process started until the service manager stepped in and said it was impossible, his shop was much too busy to handle such a simple (non paying) task. That to come back another day because it would be too long of a wait and that it was a very involved procedure. I told him no more than 5 minutes from what i saw on YouTube. Still the answer was no, service advisor is still saying she could handle it. I then said go get me the tool or sell it to me from parts and I will do it myself. Still no...I ask is the general manager around? ahhh please sir, pull your car to the first bay, Ill get my tech on it right away. lol.

Tech shows up with scanner, jumps in the car and proceeds to fire up the engine and start searching thru my DIS menus(red flag already, but maybe I have something to learn here). After a few minutes and no luck, I mention the procedure that I watched on the YouTube video posted here. "NO SIR! I have done this for years and that's not the correct procedure" I ask, could you at least try it for me? WOW! a horn beep like in the video! ha, ha. Then the tech jumps out of the car, puts the wrong end of the scanner to the tire, activates the scanner and says "SEE SIR? your procedure is wrong" I then tell him his scanner is backwards....you should have seen the service managers face, priceless. So TPMS sensors are now reading correctly and at no charge! Quite the first experience for my first visit to a Chevy dealer service.....

 

I bought my relearn tool from the dealer. $46

Works great, see my previous post:

http://forums.corvetteforum.com/c6-t...nder-50-a.html