Silverado 3500 2WD V8-6.6L DSL Turbo VIN 2 (2004)
Install the intake horizontal baffle as seen in the illustration above.
Remove the right head lamp assembly. Refer to SI if necessary. With the head lamp out, clean the surface with 3M(R) General Purpose Adhesive
Cleaner, or equivalent. Install the baffle intake air (foam block) on the radiator support as seen in the illustration above.
Reprogram the vehicle PCM with new software. Refer to TIS for the calibration cylindrical air cleaner housing. Reposition the engine oil indicator
(dipstick) tube toward the fender so it will clear the air cleaner outlet duct.
If the vehicle is a 2004 or 2005 GMC Sierra, the following items will have to be installed to ensure cooler air is entering the system.
Remove the left and right head lamp assembly. Refer to SI if necessary.
Install the seal around the lamp with the wide part of the seal across the top of the lamp.
Remove the grille. Refer to SI if necessary.
Install the seals on the left and right side of the grille as seen in the illustration above.