Tune stops 20% through backup...

[yz_loco]

Hello all,

Just received my brand new Predator U7195 and have made a couple of attempts to program my '03 GMC Yukon XL w/ 8.1 Vortec. I've pulled the OnStar fuse, set the parking brake to turn off the DRL's and manually turned off the headlights. I can make it through the first 20% of the backup of the stock program and that's as far as I get. I notice that when the backup first starts, the dashboard display tells me "Unknown Driver" as opposed to Driver 1 or Driver 2, but right before the backup stops the display goes back to Driver 2 (me!) and all the gages start to work again (voltage, etc.). One interesting thing is that the Predator display shows a single out-of-place dot right below and between the 2 and the 0 of the "20% Completed" message.

I've had the battery charger hooked up and it reads 100% charged, since I've read quite a few posts where low voltage seemed to cause a similar problem. That hasn't made any difference in trying to get everything backed up.

Any suggestions are very welcome...

Rich

[mikel]

What revision is on this tool?
Is there an error message when it fails to save the backup file?

Thanks

[yz_loco]

Mike,

Revision seems to be the latest - Shows 2.04 on the tool. I'm also not getting any error message after I hit the 20% mark on the backup. I've tried this about three times now - the last two with the battery charger hooked up and various fuses out (besides the OnStar), and never get an error message. The last time I let it sit for about 30 minutes after hitting 20% and it never did anything more. I have to turn off the key (still no error message) and eventually just unplug the tool from the OBD-II connector. The vehicle still seems to be running okay despite the failed attempts, although I have had a couple of unexplained stalls since trying to program the vehicle.

Thanks for your help!

Rich

[01Z]

I was under the impression that you are not to have a battery charger connected when using the predator. I know that doesn't fix your problem but it could present a new one.

[mikel]

The charger is fine on a 2 amp trickle draw to keep the voltage up when tuning.

I feel this Predator may have an issue, I would suggest you either contact the dealer and see if they can swap it out for you, or fill out an RMA request form under support and send the tool in under warranty.

Thanks