2012 GMC Sierra 2500HD S475/S366

2012 GMC Sierra 2500HD S475/S366


Burlington, North Dakota | Posted October 12, 2018


Andrew Reese


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Year: 2012
Type: Diesel Truck
Make: GMC
Model: Sierra 2500
Transmission: Automatic
Drive: 4WD
Mileage: 116000


2012 GMC Sierra 2500 HD 6.6L Twin Turbo Diesel

Never used as work truck. Personal project.

S475/S366sxe Compound Turbos (Wherli)

Profab Performance exhaust manifolds & up-pipes

Exergy 10mm stroker CP3 conversion (Wherli)

Exergy 60% injectors (Wherli)

Raptor 150 lift pump w/CAT fuel filters/XPD fuel sump/5/8 feed lines to CP3

Built Trans w/4disc TC PPE deep pan (Ultimate Transmission in Boise, ID.)

ProMeth Methanol kit. Pump can run 22GPH at pressure currently on using 4gph/22 gal. tank.

Edge CTS Monitor w/Engine oil Temp/EGT/Drive pressure accessories.

EFI live (Tony from RidgeRunnerDiesel) Tunes programmed in Autocal to use 35, or 37 tires. I recommend going to 37's, the 4.88 gears are pretty tall for 35's. I used this size tire because they can load 4080lbs per.

6.5 BDS lift

Longhorn Fab Traction bars

CV style front drive shaft

Kryptonite tie rod sleeves. 

4.88 gears MagHytech large diff cover.

Exhaust brake off of a Kodiak built into exhaust below cab, controlled by air tank, and valve in cab. (see pics)

Secondary Oil Cooler 

Secondary Trans Cooler

Ive taken really good care of this truck, there are the usual road chips on the front of the bed, and along the bottom, etc. I have included pictures of two damage items, cab corner from trailer, and driver door handle.