My buddy has a 2006 Silverado 5.3 OS 12619624
We are looking for a LQ9 tune with that OS..
Holdencrazy.com doesnt have anything for us.

So if anyone is out there that has a matching operating system with a LQ9, please post up.


So far ive only found a tune with a OS of 12613246.

We wanted to do the engine swap friday night, but cant find a tune for it..

Please help guys..