John, I just used a predator on my 07' tahoe, and let me tell ya, the dash was screaming at me! Everything from stabilitrak disabled to service 4wd to engine service needed. Heck, once the doors even locked by themselves. I do have onstar, but pulled the fuses to disable it.

The good news is, I ...

Just wondering when the U1794 will support 2008 trucks.

Hey guys, now that this thing is working, I see a couple options, but I think I'm missing some too

I see a 87 tune, a diablo tune, a modify stock tune, and a original backup option

sooo, I put the 87 tune in, worked great - but I want to get rid of the speed limiter, so, I tried to do that by the ...

Ok, that was crazy, this time, I plugged it in without taking ANY fuses out, and it got past the "unsupported vehicle" screen! SWEET! (this is on the 2007 tahoe) Then, I popped the hood, turned the ignition off, pulled the fuses, turned the ignition back on, and presto, it worked!

87 Tune is ...

Mike, for some reason I can't email you back, I get a message undelivered message - I think diablosports mail server might be down

Anyhow, to answer your questions, both trucks have 0 as their 8th digit in the vin, and the programmer is using 8r06

If giving you all the cal# info for both trucks ...

Alright guys, I've got some of/most my cal #'s. If you need something more let me know. Please help guys, there has gotta be a way to make this work.

Main OS - 12617631
Speedcal - 12614699
System Cal - 12600362
Fuel system cal - 12593141
Engine Diag - 12610461
Engine Cal - 12617980

I should also note that the 8th digit of my Vin in the tahoe is 0, which should work.

Please someone help! I'm almost certain its not working cause I'm not pulling all the correct fuses, but I don't know which to pull cause I have no instructions.

Well, I got my U1794, I purchased it for a 08 GMC sierra, I realize that it isnt supported, but I thought I'd give it a try, cause if it didn't work, I could use it on my brothers 2007 Tahoe, which is supported by the U1794.

So, I get the predator, and read the instructions. There are instructions ...

do I need a new custom tune everytime I upgrade something? Exhaust? headers? MAS?

I assume you can download tunes from the internet and send em to the predator via serial/usb, right? then use the pred to upload via obdII, right? am I confused?

Hey guys, I just bought an 08 tahoe, and I'm looking to buy a predator...I was wondering, is there anywhere where I can download custom tunes for a 08' tahoe? what about .bin files for hptuners off of ls1tech? If not, can I use the datalogging feature of the predator to log data, email that file to ...