I've searched the posts and can not find this issue addressed;
2012 2500 express, replaced a tpms unit inside the tire, can not get the van into relearn mode. Tried the DIC - it goes through all the other options but never shows any TPS re-learn mode or anything associated, tried the method mentioned on a post here of cycling between parking lights and lights off multiple times quickly with no result, tried disconnecting the battery and holding wires together for two minutes, still no relearn TPMS showing on my DIC. I do not have a remote Key fob.
2012 does not have the separate odometer trip re-set on the column, tried all options related to trip re-set with my buttons - nothing.
Any other ideas?
I'll even sacrifice a goat if someone else has had luck with that.
Thanks,

 

Is your vehicle equipped with remote keyless entry? If so then you need a remote (easier than sacrificing a goat).
Otherwise, you will need TPM capable diagnostic tool
You will also need this tool
https://chevroletforum.com/forum/exp...e8/#post437312

 

I purchased the Van used (it was comercial fleet dish network van) and it did not come with a remote.
From the options on my DIC it appears my van may be capable of using a remote as it has choices for remote lock only and "sound horn".
However, the "Car and Driver" online specs I see for that year and model say "Does not include (ATG) Remote Keyless Entry. (ATG) Remote Keyless Entry must be ordered separately". It just seems doubtful that Dish would purchase that additional option for a fleet van but I'm only guessing.
Do you know any way of finding out for certain if the van is capable of using a remote?
Amazon has remote fobs relatively cheap ($14) but they say it will need to be programmed - I'm sure I can figure that all out as long as my van is capable of accepting a keyless fob.
I did already purchase that exact same TPMS re-learn tool when I purchased my TPMS units so I'm set in that respect.
Really appreciate the response!

 

You could try checking the RPO codes on your door sticker.

Something like this should be able to enable learn mode:
https://www.foxwelldiag.com/products/foxwell-nt809ts

 

Thanks - good idea looking up the info using the door plate info. Just did and it appears the van did not come with remote control locks.
Last time I had a TPMS sensor go bad I had a local tire shop replace it ($150) and rotate the tires while there.
They used a piece of equipment that looked like the Foxwell unit you linked to get the van to re-learn the new sensor and new tire locations.
The price of that tool would not be justifiable for my situation
Might be most practical to just have that tire shop rotate the tires again (which will require them to initiate the "re-learn"process in the van).
Better yet - maybe they'll just do the re-learn process for even cheaper.
Only concern being will the after market sensor I just installed be recognised and work as I hope. Looks like only one way to find out.

On another note; You and I messaged back and forth a while back when I was trying to get an aftermarket program off of my van's ECM, specifically the speed limiter portion.
My local Chevy dealer service dept could not remove it, a private, well respected "tuner" could not either. I even took it to yet another Chevy dealer in the nearest city and after trying, he also could not remove it (all tried to flash to original specs and it would not allow it). I finally had to buy a used ECM from a junkyard and have it flashed to my van. (I now wonder if changing that ECM has something to do with my not being able to get a re-learn mode for my TPMS).
What sucks is that my highway mileage with the old ECM was reaching 21 mpg and now 17 is the best I can get. The difference in around town mileage is even more drastic. At least now I can pass on the highway!
Thanks again

 

You can have that economy any time you like. You just have to drive slower.

Frankly I'm not the least bit surprised the dealers were unable to remove it. Not many mechanics have the right background for computer work. I refuse to believe that a cable company bought a fleet of their own ECMs that were physically different to the factory ones. Even the rep said they wouldn't remove it, implying that it is possible.

 

The old speed limiter limited my speed to about 71 mph - that's what I tested my gas mileage with the new (used) ECM. Same speed, substantially different mileage.
The cable company did not buy any ECMs. They hired the DeRIVES fleet management company to install their software.
With my VIN number the DeRIVES company confirmed over the phone that their software was installed on my van.
Yes - the rep for Drives could probably remove it - they designed and built it but two different Chevy dealerships could not.
And probably some super hacker could remove it as well but I'm not one, I don't know one and the dealers can't
So the end result is still the same.
See the link.
https://www.derivevq.com/

 

There's no free lunch. You can optimize for economy, or power, or something else, but it will come at the cost of something else. You can only shift the balance away from what the factory set. If GM could achieve better economy numbers with a bit of software, and no negative consequences, then you better believe they would do that because it would sell more vehicles. So that makes me wonder what DeRIVES is sacrificing to improve the economy. In their product literature they talk about "managing torque settings" and "modifying acceleration throttle response control" and of course speed governing.

It should technically be possible to do a low level re-flash of a chip to make it OEM again. I think the problem might lie in the fact that you would need a copy of the factory software to put on. That could be difficult/impossible to obtain if GM guards it. It's possible that DeRIVES doesn't even have a copy, which might explain their reluctance to deal with it. It's possible that their modifications are a one way street ... permanent. The tools the dealership has (and probably even the tune shop you went to) probably work with the assumption that the ECU still has factory software and is only equipped to interface with it.

Well that's good to know. Yours is an interesting case, and I'll be sure to avoid fleet vehicle in the future.

 

As expected, there was a marked improvement in the responsiveness of the van with the newer, factory OEM ECU - wasn't huge but certainly noticeable.
The Dish network vans in my local area (north-western Virginia) do not have the software on them - I've spoken to the local Dish franchise owner and her maintenance manager and they both said they use no speed limiters or any other aftermarket software. I suppose it's up to each franchise owner (my van came from the Philadelphia PA area) .
I'm really surprised that there is not some sort of identifying sticker or plaque in the engine compartment or elsewhere on the van stating that "...this vehicle is equipped with... " . Maybe there was but the dish dealer found it negatively affected auction prices - Dunno.
One last thing you may find of interest - any mechanical knowledge I have is ancient - my "toys" are 70's era and I have almost no knowledge of modern automotive mechanical design, but when researching the Derives company, I saw that they are the parent company of SCT and BULLY DOG performance tuning products. I've never heard of them but you probably have.

 

I haven't, but I don't own a fleet, and I don't race, so I've never had the need for tuning. But one day I might if I change my rear end or get bigger tires.