MY TRUCK WON'T Start, HELP

[ptownbacker5]

Tried to put stock tune back on and everything but it'll just turnover and it wont start, i need help, i need to get to work in the morning!!!!

[joecar]

Did the flash go to completion...?

Was it a cal only flash or a full flash...?

When flashing was complete, did you turn the ignition key to off and wait at least 15 seconds...?

Are you certain that you flashed the correct file...?

What vehicle is it...?

[ptownbacker5]

it said it completed, and it was a calibration only flash, i have an 08 lmm, and i think maybe one of the ecm selector;s was set to an lbz but not sure. it just turns over and doesnt fire

[GMPX]

Did you check if any DTC's are set to maybe help narrow down what the issue might be?
Did it take the stock tune ok?
If still no go, maybe something has been messed up in the theft part of the ECM. Try setting G0301 to Disable and G0308 to None, both parameters are located in the System > VATS section. Then flash that in and see if it starts.

Cheers,
Ross

[ptownbacker5]

ok i'll try that, also when it reflashes it doesnt reboot like it normally does, i might have had a file set for an LBZ and i didnt know it, would that effect it?

[ptownbacker5]

oh and there arent any codes

[ptownbacker5]

ok that didnt work, but it doesnt reboot the right way anymore. usually i dont have to have the key in the on position, but now i do.

[The Neens]

Open the tuning tool and select "Read PCM Calibrations"...When that process is over, try reflashing your stock tune using normal procedures...

[ptownbacker5]

alright i'm trying it as we speak thanks

[ptownbacker5]

no luck, still does the same thing. any body else have any ideas???
thanks for your time,

[joecar]

Can you copy the log text that is printed during flashing and paste it here...

(you may have to go into options and disable the 15 second countdown timer)

(( you would still have to wait 15 seconds after a flash ))

[joecar]

Try flashing again...

Make sure nothing interrupts the bus or power (i.e. no dome light, no radio, no On-Star).

[ptownbacker5]

Can you copy the log text that is printed during flashing and paste it here...

(you may have to go into options and disable the 15 second countdown timer)

(( you would still have to wait 15 seconds after a flash ))

23:04:59.304: Interface firmware version: 2.5.20
23:04:59.320: Interface firmware date: Aug 06, 2008
23:04:59.337: FlashScan serial number: 003703154392
23:04:59.356: FlashScan license number: 003703154392
23:04:59.383: Disconnecting ...
23:05:00.043: CAN-VPW Bridge Deactived
23:05:00.047: Disconnected
23:05:00.659: Scanning for EFILive FlashScan V2 USB
23:05:03.018: Scanning for EFILive FlashScan V2 HAPI
23:05:03.209: Interface firmware version: 2.5.20
23:05:03.227: CAN-VPW Bridge Actived
23:05:03.255: Current protocol set to: "ISO 15765 CAN"
23:05:05.344: Current protocol: "ISO 15765 CAN"
23:05:05.372: Interface firmware model: FSV2
23:05:05.392: Interface firmware version: 2.5.20
23:05:05.414: Interface firmware date: Aug 06, 2008
23:05:05.436: FlashScan serial number: 003703154392
23:05:05.458: FlashScan license number: 003703154392
23:05:05.511: Getting status...
23:05:05.907: Status: OK.
23:05:06.738: Preparing ECM for reflash...
23:05:06.765: ECM seed is: $C9D5
23:05:06.775: Unlock attempt 1 of 1
23:05:06.907: Initializing ECM...
23:05:08.251: Request GM operating system...
23:05:08.280: GM operating system: 12617083
23:05:08.815: Request serial number...
23:05:10.661: Serial number: 864801812850
23:05:13.537: Reflashing ECM's memory...
23:05:18.013: Erasing ECM flash memory... (please wait up to 2 minutes)
23:07:21.030: ECM flash memory erased OK
23:07:38.078: Reflash failed, aborting...
23:07:38.091: Total time: 02:20
23:07:38.103: Data compression achieved: 0.0%
23:07:41.120: Interface firmware version: 2.5.20
23:07:45.156: Attempting to reboot ECM... (please wait up to 8 seconds)
23:07:48.279: Waiting for ECM to complete reboot process... (Retry 1 of 8)
23:07:50.295: Waiting for ECM to complete reboot process... (Retry 2 of 8)
23:07:52.313: Waiting for ECM to complete reboot process... (Retry 3 of 8)
23:07:54.330: Waiting for ECM to complete reboot process... (Retry 4 of 8)
23:07:56.349: Waiting for ECM to complete reboot process... (Retry 5 of 8)
23:07:56.385: ECM has booted successfully...
23:07:57.651: Reflashing completed successfully
23:08:01.510: Done!


When it tried to reboot i had to turn the key on for it to reboot, thats why it failed a few times

[ptownbacker5]

Fixed, idk, what it was, i just did everything you said, and a little more, thanks for your time, i appreciate it. Wouldnt be a fun ride to work on a bike lol. thanks again!!!

[GMPX]

ok that didnt work, but it doesnt reboot the right way anymore. usually i dont have to have the key in the on position, but now i do.
The key must be in the On position to reflash, I am sure there is one 12V power feed to the ECM that is not present unless it is in the On pos. Was that the problem?

Cheers,
Ross

[ptownbacker5]

pretty sure that was it, i think i might have either turned it on or off during the flash, something that small had me freakin out lol. i appreciate your guys' time

[GMPX]

No problem, put the bus schedule away now :)