You can order a car , truck and special equipment file, ecfg file, firmware

We will help you as soon as possible

Chevrolet GMC Duramax .CTZ Files
Duramax CTZ Files for Chevrolet GMC

Price for 1 file
Price for all Files: 500$ usd

Files Included:
2003 GMC Sierra_Truck_Automatic_LB7_6.6 Litre (15189044).tun
2005 GMC Sierra Truck Manual LLY 6.6 Litre (15228758).tun
2011 2500 4d Denali (OS 12646249).ctz
2011 3500 2d 4d GMC (OS 12646249).ctz
2011 3500 4d GMC Dually a (OS 12646249).ctz
2011 3500 4d GMC Dually b (OS 12646249).ctz
2013 3500 Savana (OS 12645750).ctz
2014 3500 2d GMC (OS 12645750).ctz
2014 3500 4d Denali (OS 12645750).ctz
2014 3500 4d GMC Dually (OS 12645750).ctz
2014 GMC 3500 2D (OS 12645750).ctz
2014 GMC 3500 4d Dually (OS 12645750).ctz
2014 GMC 3500 Denali 4D (OS 12645750).ctz
2015 3500 4d 4WD GMC Denali a.ctz
2015 3500 4d 4WD GMC Denali b.ctz
2015 3500 4d 4WD GMC SLT.ctz
2016 GMC Savana 4500.ctz
2016 GMC Sierra 2500 4D CC.ctz