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The GMC dealer just installed larger tires on my '04 GMC Sierra 2500 HD Diesel. (I went from 245/75R16 to 285/75R16's!) I restored the stock settings using the Flashpaq before taking it to the dealer knowing that the dealer would be updating the computer with the new tire settings. I now want to re-read the stock settings with the Flashpaq so that it will store the correct stock tire setting in the Flashpaq's stock files. When I tell the Flashpaq to read stock settings it displays a message within a couple of seconds that says something like "Stock file already read for this vehicle" and I don't think it updates its stored stock settings. If I now program one of the performance settings and later return to the stock settings, will the tire size be correct or will it revert to the older out-of-date tire size that we in on the vehicle when the Flashpaq first read and stored stock settings? Please advise. I am anxious to get a tuner programmed in right away, but I need to make sure that I can safely restore correct (current) stock settings.

I don't think they will adjust any settings unless the wheel size changes. If you stayed with a 16" wheel the setting will be the same.

The dealer definitely updated the computer with the new tire size so the speedometer/odometer would be correct. My original stock tires were 245/75R16 and my new tires are 285/75R16 which are considerably bigger (taller and wider). It's the (* of the tire that matters -- not the wheel (rim) size.

I'm concerned that the stock settings stored in my Flashpaq will still have the original tire size information which is now out-of-date and incorrect. See, the Flashpaq stored my stock settings BEFORE I had the bigger tires installed. Now that the bigger tires are installed and the dealer has updated my computer with the newer bigger tire settings, I want my Flashpaq to re-read and store the current stock settings with the new tire size -- but it won't (see my initial post.) It seems to think it already has the current settings. If I can't get it to read and store the CURRENT stock settings then it won't be able to restore the proper stock settings the next time I need it to.

I've had my Flashpaq for almost two weeks. I ran with the Performance tune installed for about a week and logged about 500 miles with it. There was a huge increase in power and about a 2.5 MPG increase -- mostly highway driving at around 75 MPH including mountains in Western Maryland. But the shifting was noticably (uncomfortably) rougher than with stock settings. I'm going to try the Tow/Performance setting next to see if shifting is any better.

Anyway, I returned it to stock settings prior to the dealer visit to get the bigger tires installed. I'm waiting for an answer from SC before I can safely load a performance tune configuration with my Flashpaq. I was really hoping for an answer this weekend. I didn't get my truck back from the dealer until 6 PM Friday, so unfortunately SC was closed by the time I found out I had this problem. (SC - you really should try to set up some kind of after-hours and weekend hotline. Most of your customers only get a chance to "play" at night and on weekends which is when we need your support the most!)

I've got to get this problem worked out if I'm going to keep this thing and my 30 day eval period will be up shortly. Ron (or someone else from SC), please get me some answers soon. Thanks.

Do you know anyone else with a compatible vehicle you can use your flashaq on, and then when you re-use it on your truck it will read your updated stock tune info?

That's a great idea and sounds like it would work, but I don't have easy access to another compatible truck. Later this week I might be able to try it on a friend's truck, but he has an Edge chip installed and I don't want to risk messing up his truck or messing up my Flashpaq. It seems like reading stock settings shouldn't cause any problems, but I don't know if he would be willing to take the chance.

This seems like it would be a common problem. Before taking a vehicle to the dealer we are supposed to restore it to stock settings. After getting the vehicle back we should be able to update the stock settings stored in the Flashpaq prior to loading any performance tuner settings into the vehicle.

There's got to be some standard procedure to force the Flashpaq to update it's stored stock settings -- without having a second compatible vehicle. Anyone out there know how?

When the dealer recalibrates the tire height on the trucks it is overwritten in the computer with our tuning.
The tuner did not want to read stock again because the tuner recognizes the program as the last program that it was working with.
It doesn't need to store it again.

As for the tuner recognizing the new tire height programmed to the truck it will not, you will still have to use the tire recalibration from the superchips.

NOTE:
Measuring from the ground to the top of the tire within 1/4" increaments, using a tape measure or yard stick.
Ron

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Ron,

So what you are saying is that Flashpaq will not update the Stock Tune that has been stored on the Flashpaq from the updated "Stock Tune" that the dealership has done to our vehicles because it wasn't a version change but only a calibration change, which the Flashpaq doesn't recognize.

But we can fool the Flashpaq by putting another "Stock Tune" from another supported vehicle for our particular model of Flashpaq and then let it re-read the "New" Stock Tune on our vehicle and then it will store it to the Flashpaq?

NO
The tuner can only store 1 VIN at a time.
Ron

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I know that it can only store "1" Vin at a time.
(My point being) per your quote several posts below to lisabshops:

"Do you know anyone else with a compatible vehicle you can use your flashaq on, and then when you re-use it on your truck it will read your updated stock tune info?"

That was my point in my last sentence in my previous post.

The FP will recognize the new calibration if it is changed, then it will re-read the stock tune, and then check for a match in the database.
If there is no match then (Tuner requires update) then you go to the FP site and update the tuner.

And yes if you store another stock tune in the tuner it will recognize it and NOT store another tune, it will say "connect to original vehicle".
You would need to return the stock tune to that vehicle before using the tuner again.
AND THEN it will store the new stock tune again and then program.
Ron

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