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'05 Chevy Avalanche 5.3 failed to restore, no start

Post here with any questions regarding the use of the i2 on supported Chevrolet, GMC, Cadillac, Buick, and Pontiac applications.

Moderator: sohfast94

Posts: 2
Hi folks brand new here!
Got my tuner today and had to test it out! Installed the updates, and tried the 87 tune. Went for a trip and came back to restore the factory tune, but it said tune writing failed! Unplug/reboot, etc..
When I rebooted, it says recovery mode: Yes to restore factory backup.
As soon as PCM Writing Tune comes up, I get "Please Wait" followed by "an error occurred while restoring original backup.

Now my truck won't start.. looking for some suggestions...

Posts: 2
Shout out to Anthony at customer service.

Gave me a list of additional fuses to pull, disconnected the battery for awhile, battery charger on it for insurance.

Got it flashed back to stock, then decided to test it a few more times. One failed install, recovery worked flawless this time, a few cycles of driving between tuned and stock since.
No current issues!

Posts: 56616
Location: DiabloSport World Headquarters

awesome :)
Mike Litsch
Powerteq Customer Service Manager
Diablo Tech support by phone:
M-F 8:00 AM to 5:00 PM EST

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