Unfortunately it has fuses for the power to the box and those don't get the job done. And if you are familliar with a remote start, they have about 60-80 wires associated with them, so isolating all of them for a "master breaker" would be problematic. I guess if you guys don't have any further ...

So last night I removed (unplugged) the remote starter and the passlock module. Success! :D I'm still getting the tune figured out but so far it's very impressive at the 65hp setting.

As for the remote start...surely other members are running remote starts on these trucks. Do you guys have any ...

I've actually already tried that. Same message. Error #209. So far I've tried...

Loading a tune without removing any truck or remote start fuses.
Loading a tune after removing all the fuses from the remote start and truck.
Loading a tune after removing the fuses required for the truck. Radio, Info ...

Mike...throw me a bone here.

Oh please Mr. Easter Bunny...bring me the ability to load my tunes. Mr. Duramax is so lonely without them

I picked up 1.5 MPG with a cold air intake and 4" turbo back straight pipe. Plan to install my tunes soon and will report back.

What should I try next?

According to my documentation...my MAX LLY tune is 100 HP

Pulled all fuses on the remote start and tried again. Same result.

Calibration ID's

15231600 Operating Software Cal
15246466 Engine Cal
15246464 Engine Diag Cal
15233729 Transmission Cal
15233723 Transmission Diag Cal
15233734 Fuel Cal

Vin # 1GTHK23275F856664

mikel wrote:Do you have XM radio, an alarm, a remote starter, any type of aftermarket electronics?

Thanks

I have a remote starter but it has a disable switch under the dash which I turn off

I'll pull the rest of the info you are after at lunch or this evening.

2005 GMC 6.6L Duramax. LLY. Allison. 2.02 Predator.

Select - Tune it
Select - Auto trans
Select - Install Tune
Select - 65hp tune (also tried 40hp with same results)
Select - Enter to Install

The screen flashes "Please wait Communicating". The needles on the guages sweep many times and the "Please ...

I'll try to load a tune again tonight and get you the exact message. Thanks for the help.

I should probablly add that is a U7185 V2.02

Pulled my predator out for the first time to load a tune. Backed up the stock tune successfully, but everytime I attempt to load a custom tune (40 and 65 HP), I get a #209 error. What is this and how do I fix it?

Thanks for the quick reply, but one more question. Virtually isn't quite the same as exactly. Are there any differences to be aware of? Do you have to pull all the same fuses with the LLY? Do you have a .pdf you could email? [email protected] Thanks!!!