DIC error

04-silver · March 21, 2004

I bluntly made a post about this awhile back. Finally took a pic of it to-night.

I bought my 2500 LS Jan 21/04 without the personal DIC(thought those buttons on the wheel were just cruise and radio, oh well next truck)

Feb 12/04 I get this warning, (pic) took the truck to dealers next day, all day........lol. they tell me no one has seen this, knows how it came on or how to get it off. March 12 I call GM direct, long story short the "engineers" are working on it. Expected that answer.

Now March 20, since Feb 12 every time I start the truck I have to push the trip button to temporarily get rid of it or do nothing and just let it read "Service Tire Monitor" till I shut the truck down.

So far I think I've been fairly patient about this.

In case your wondering the truck doesn't have this feature, what I've been told all the trucks have the same software, they just don't have all/same hardware.

If no out here has had or seen this problem I'll keep you posted when GM lets me know. This is bound to happen to someone else I would think.

Other then that the truck is great, kinda puts a damper on a brand new toy though................lol

Found a better Web photo share thingy...lol

John

mmayo · March 21, 2004

Tucson_02Silverado · March 21, 2004

Not knowing for sure, but....the H2 has the tire monitor. Maybe the BCM (Body Computer Module) in your truck has that option turned on. The dealer should have hooked up a TECH2 to check and then turned it off if that was the case. And they shouldn't be charging either.

asepgrad98 · March 21, 2004

I have a friend whom GM bought his S-10 back because the "engineers" could not come up with a fix for his fuel gauge. Hope it doesnt go that far in your case.

GMCTech · March 21, 2004

The tire monitor system has to be reprogrammed.

Try this first: - Read the whole procedure first before you start:

Turn key to on position, Set parking brake. Turn headlight switch to parking lights, then back to "off" four times. The horn should honk twice to let you know the tire monitor system is ready for programming. (If it doesn't honk, the passenger door module needs to be reprogrammed at your dealership).

Starting with your left front tire remove air for 8 to 10 seconds. The horn should honk again within 30 seconds. Move to your right front tire, remove air for 8-10 seconds, wait for honk. Then do same for right rear and left rear tire. After the left rear has been done, and the truck has honked, shut key off.

Now you can reset tire pressures to proper level.

With the tire monitor system, this procedure has to be done every time you rotate tires so that the monitor system knows which tire is in which position.

Hope this helps. Let us know.

linda · March 21, 2004

Seems simple enough... .

tmf6902 · March 21, 2004

The tire monitor system has to be reprogrammed.

Try this first: - Read the whole procedure first before you start:

Turn key to on position, Set parking brake. Turn headlight switch to parking lights, then back to "off" four times. The horn should honk twice to let you know the tire monitor system is ready for programming. (If it doesn't honk, the passenger door module needs to be reprogrammed at your dealership).

Starting with your left front tire remove air for 8 to 10 seconds. The horn should honk again within 30 seconds. Move to your right front tire, remove air for 8-10 seconds, wait for honk. Then do same for right rear and left rear tire. After the left rear has been done, and the truck has honked, shut key off.

Now you can reset tire pressures to proper level.

With the tire monitor system, this procedure has to be done every time you rotate tires so that the monitor system knows which tire is in which position.

Hope this helps. Let us know.

d**n what a PITA....everytime rotate your tires??? Couldn't they have just put a reset switch under the hood somewhere??? Sounds like GM's been taking notes from Microsoft.

04-silver · March 21, 2004

lol.......tmf6902

I tried the parking brake/light thing and the air from the tires the evening this came up. Made a lot of phone calls/internet.........lol. Even onstar helped somewhat and I don't have that.

Anyway as it turns out and I initially thought the truck does not have the "Service Tire Monitor" option.

don't mean to sound harsh but...........

In case your wondering the truck doesn't have this feature, what I've been told all the trucks have the same software, they just don't have all/same hardware.

Also I thought if the truck does have this option does it not display something different like "Check Tire Pressure" ?

I'm waiting now to see if the Change Oil display will come up now, should be about 3 weeks or so, if it doesn't then there is a software issue here. That was just a thought. You now how PC's can be...........lol

I'll let you know when I do.

John

GMCTech · March 22, 2004

What do your valve stems look like?

If they are steel stems bolted (nutted) to rim then you have the tire monitor system.

As far as "check tire pressure". All trucks with the DIC will display that. (That is determined by the tire rotation through the ABS module) But the trucks with the tire monitor system will display: "Left Front Tire Low, or Right Rear Tire Low, etc.

If not then you are right, the software is installed incorrectly. It has to be reprogrammed.

The oil change system is not in any way related to the tire monitor system though. THe oil change system is PCM controlled, the tire pressure system is controlled by the passenger door module.

tmf,.... The reason it doesn't have a "reset" button is because each tire has it's own air pressure transmitter that sends a signal to the passenger door module. They've had this system in the 'Vettes and the Cadillac CTs for a couple years now, and thought that people would think it's a "cool" feature for high end truck owners. But, you are absolutely correct-----P I T A !!!

Hope this has cleared up some confusion, or just created more.

04-silver · March 23, 2004

GMC Tech

Thanks for trying to help me out.

I thought maybe the Oil Change and Tire monitor may have been on the same software.

All this PCM, BCM, PDM, (whatever these acronyms are that every uses but me), do they not all originate from the same software?

I already checked the stems, I've read about those on the net and thought they were only on Vettes and I think Grand Am's/Prix. Mine are threaded but do have a rubber seal at the rim, no nut though.

Never seen - Left Front Tire Low or RFTL etc. Only the "Service Tire Monitor" just whats in the pic I posted.

Started being a real PITA this weekend, running the kids all over LLL half acre. Every time I spark the truck up, push the trip button.

The burner has been turned on....................lol.

Basically I just posted this in case someone else eventually comes across this and(of all the trucks built I can't be the only one) maybe when/if Gm finds a fix I can post it and theirs won't take so long to remedy. I also thought there might be a slight chance this has already happened and taken care of.

Thanks again GMC and the others

John

GMCTech · March 23, 2004

already checked the stems, I've read about those on the net and thought they were only on Vettes and I think Grand Am's/Prix. Mine are threaded but do have a rubber seal at the rim, no nut though.

Are they steel? I may have it pictured in my mind wrong. If they are steel with a factory chrome or satin stainless cap then the vehicle has the tire monitor system.

All this PCM, BCM, PDM, (whatever these acronyms are that every uses but me), do they not all originate from the same software?

No each computer has it's own software with many, many variations available, depending on platform and options.

Try one more thing, if you don't mind. Try pulling the PDM fuse ( It is in the driver's side fuse panel - left side of dash board) The fuse is near the "bottom" of the panel I believe just below a relay for unlocking? Leave that unplugged for a minute or two, then try the lights on, lights off procedure that I explained earlier.

If your valve stems are rubber, then disregard everything I have said thus far and tell me to go to h**l.

04-silver · March 24, 2004

GMCTech

You know I think this is might be bothering you more than me...............lol

Here's a pic of the Valve Stem, it is steel with palstic cap and a rubber band/seal at the rim. No nut.

Which fuse is it?

or

I'm starting to play now.........lol

John

GMCTech · March 24, 2004

Ok- last post - I swear

You DO NOT have the tire pressure monitor system.

For what ever reason your truck was programmed for it. It needs to be "un"programmed.

Hope this has helped without causing too much frustration. You are right though, it probably did bother me more than it bothered you - I have already had half a dozen new trucks in my bay with problems related to this PITA system.

Hope you can get it all worked out.

JayMan · March 24, 2004

This is scary. Way back I took Computer Science with an emphasis in Embedded Systems. I freak thinking that all our "critical" systems are run with glitchy software or infected with malware. Like fly-by-wire passenger aircraft.

On average, a "good" programmer has a 10% overall error rate. I was more like 15%. You only hope the compiler catches the worst, but it can't think for you.

I once had to program a chemical tank farm agitator system to properly cycle the agitators on/off depending on tank level. Must have suffered a brain problem as I transposed ON and OFF for the levels: the agitators tried running when the tank was empty and stayed off when the tank was full. Everybody thought it was funny.

You can check for your "proper" calibration by visiting the following site:

http://calid.gm.com/vci/VINEntryPre.do

It could very well be that you have a unique glitch. If that is the case, you're SOL as nobody is going to wade through hundreds of thousands of lines of RTOS code to find the one word that is causing this.

04-silver · March 25, 2004

Jayman:

Tried that site but I get a "data base error". I'll try again later. thanks.

GMCTech:

On the bright side I got to play with my digi cam again.........lol.

When I find out from GM I'll let you know. I have a feeling this may be awhile tho.

Right now I'm just thinking of my options I can throw at GM(nothing nasty)whatever the outcome.

Like I said in an earlier post it's kind of disappointing, only had 36K's when I test drove it and never gave it back.............lol, but now I find myself looking for things to go wrong, thats not good.

Edited:Just thought I'd add I really don't think I'd be able to sell the truck if this problem never got fixed, you notice it before you put it in gear, before you get your seat belt on actually.

Anyway I'll let you know when I do.

John

I'm off to take some pics' now.