How to Install SLP Blackwing Cold Air Intake on your Sierra

WARNING: SLP Recommends allowing the vehicle to cool (not running) for five hours before beginning installation.

INSTALLATION INSTRUCTIONS– #21051, 21052

1. Remove the plastic “Vortec” engine dress cover.

2. Next loosen the worm drive clamp on the throttle body to stock inlet tube.

3. Next loosen the clamp on the MAF sensor to stock bellows. Remove the stock intake tube and stock bellows as one piece (if equipped, disconnect breather line from tube).

4. Next unplug the MAF sensor from the wire harness.

5. Next loosen the worm drive clamp that holds the MAF to the stock airbox and remove the MAF sensor.

6. Next remove the entire airbox as one piece. It is only held in by 3 rubber pins. Pull up
and out with some force to remove the box from the truck.

7. Next remove the five bolts in the black plate that was under the stock airbox.

8. Remove the pins from the vehicle. You will not need this piece.

9. Next place SLP’s new cold air box in place with the large square opening in the box
facing the fender.

10. Only three of the bolts will be reused to hold the SLP airbox in place. Tighten all three bolts to secure the box.

11. Next install the SLP high flow filter. The filter is a tight fit when installing into the box, so the following steps must be taken to get the filter in the box with ease. First, position the filter so that the entire open end of the filter is under the mounting stub on the inside of the box. Push the filter down and in, under the stub. The filter will now be completely in the box under the mounting stub. Next, slide the filter to the fender side of the box so that the outlet of the filter can slide onto the mounting stub inside the box. Slide the filter all the way onto the stub and tighten the worm drive clamp. See Photo 1 below.

12. Place the SLP cover onto the air filter housing and push the screw plugs into the housing. Insert and tighten the four plastic screws into the screw plugs to secure the lid to the air filter housing.

13. Next install the stock MAF back onto the outlet stub of the SLP air box. Tighten the
worm clamp and plug the MAF sensor back into the wire harness. Be sure to install the
MAF sensor in the correct direction. The MAF sensor will have an arrow that points in
the direction of the flow. This should point toward the throttle body and not the filter.
See Photo 2 on the next page.

14. Next insert the supplied GM rubber inlet tube adapter to the end of the SLP intake tube. Spraying some WD-40 on the end of the tube will help to slide the adapter on.

15. Next install the SLP connecting hose to the outlet of the MAF sensor and loosely tighten the worm clamp. NOTE: Depending on your engine option you might find the need to trim the connecting hose for a perfect fit. Insert the inlet of the SLP intake tube into the MAF connecting hose and then onto the throttle body. Note WD40 may make fitting the parts together easier. See Photo 3 below.

16. If equipped, connect breather hose to SLP intake tube, in the grommet hole. See Photo 4 on the next page.

17. Tighten all worm drive clamps and install the plastic “Vortec” engine dress cover.

18. The installation is now complete! ENJOY!