2016 Silverado Issue

[ag030187]

Hey all -

Just received my intune I2, updated it, and connected it to my 2016 Silverado (5.3 w/ 8 spd). When I enter the tuning menu it warns me that items in my PCM are unsupported but can be read, and asks if I would like to continue with an unsupported read. It continues with the label "unknown backup", and I do see it interacting with the truck as I start seeing check engine lights and service warnings on the dash. It goes through a read to 100%, switched to "verifying", and then begins reading again. The second read (which still says "unkown backup") sits at 3% for a LONG time. I tried it 3 times and it got stuck in the second read at 3% every time. The last time I left it 45mins and it never moved past 3%.

I cannot get any further than this.

Any help is appreciated.

[ag030187]

I apologize if this should have been up in the i2 GM forum. First post and just realized there was an i2 specific area.

[ag030187]

Well...I'm even more worried now because my truck wont turn over and the check engine light is flashing. The I2 now tells me it cant read a VIN from my PCM.

[mikel]

try a battery disconnect, pull both cables, drain voltage then reconnect and it should be fine.

[ag030187]

I actually did try that at about 1am last night based on some additional posts I found buried on the forum. It did clear the truck and allow it to start but I guess the next question is, is the I2 acting normal? Is the message "some PCM modules unsupported but can be read" expected for my truck and should we expect it to "read" the PCM twice in a row and get stuck at 3% seemingly indefinitely. Again, I left it for as long as 45 mins at 3%. The last time I did so, the check engine light was flashing when I got back and Onstar had sent me multiple system failure notifications. I guess Im asking what my next steps should be.

[Zach]

Can you post OR send me your info.xml file please.

zhill < at> powerteq.com

[ag030187]

Sure, here it is:

<?xml version="1.0"?>
<tool_info>
<registration updates="0" tool_oem="DIABLO_G" status="0" sn="14U7ZCLWTL"/>
<applications count="5">
<application rev="2r01n" name="vehicle"/>
<application rev="missing" name="updater"/>
<application rev="2r01i" name="gui"/>
<application rev="2r01d" name="installer"/>
<application rev="2r01a" name="logger"/>
</applications>
<databases gui="2r01f" vin="2r01g" dtc="2r01a" dbnames="2r00">
<database pid="2r01cc" mfr="DCX"/>
<database pid="2r01cf" mfr="FORD"/>
<database pid="2r01ba" mfr="GM" tune="2r02s"/>
</databases>
<system rev="1r01a" config="1r01a">
<option name="Wifi" enabled="false"/>
</system>
<last-connected vin="3GCUKSECXGG184654" mfr="GM" calid="12672612, 12672876, 12676327, 12653630, 12659034, 12665605, 12664742, 12665281"/>
<last-connected calid="24280476, 24280645, 24280642, 24266306, 24276382, 24280648"/>
<licenses tuned="0" available="1"/>
<reg reg="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"/>
</tool_info>

[ag030187]

The forum is cutting off a large portion of that reg value. Not sure if that is significant to you or not. I tried to PM it to you but it did the same thing. The reg value has literally about 10 times as many characters in the actual xml file.

[ag030187]

Zach - I emailed it to you. Hopefully it came through in its entirety.

[ag030187]

Any word on might be wrong? I was hoping to have some direction before everyone disappeared for the weekend.

[Zach]

I emailed you back yesterday morning first thing.

Your tool is out of date. You need to run the updater utility and then try flashing your truck.

[ag030187]

Sorry - I don't have an email from anyone. Checked my junk too. Not sure what happened there.

Again, I'm not sure what to do....I ran the updater the day I opened it and tried the first flash. It downloaded and applied some updates. Toom about 10 mins. When I run it now it does nothing. It acts like its up to date.

Not sure what to do.

[Zach]

The info file shows that you are on 2ro2s for gm database. We are currently on 2ro2w. I would suggest running the updater again. If when you run it, it doesn't do anything, try manually clicking check for updates.

[ag030187]

I forced an update tonight, attempted a flash again (with a tender on the battery this time) and it worked slicker than hell. 91 Oct tune installed and the truck now drives like I expected it to from the factory.


Thanks for the help!

[Zach]

no problem, glad to hear it.