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GMC Sierra 1999 - 2007

About :

Chiptuning-FILE is the best tuning server on the web for gmc sierra tuning files. all gmc tuning files are custom made and thoroughly tested on a 4x4 dynometer. the development of each gmc tuning file is the result of perfection and dedication by our programmers. many tuners in the world are working on Chiptuning-FILE because they are trusting our result.

STAGE 1
STAGE 2
DPF OFF
EGR OFF
DECAT
ORIGIN
360 Hp 525 Nm
CHIPTUNING
380 HP 545 Nm
DIFFERENCE
+20 HP +20 Nm