How to Install AEM Performance Cold Air Intake - Black on your Sierra

a. Remove the engine cover; lift up to release the tabs from the grommets that secure it in place.

b. Unplug the MAF sensor connector from the MAF sensor.

c. Loosen the hose clamp on the throttle body end of the inlet tube.

d. Loosen the hose clamp that secures the inlet tube to the air filter box.

e. Unclip the inlet tube from the plastic bracket attached to the radiator hose.

f. Remove the PCV line from the factory air inlet assembly.

g. Remove the factory air inlet assembly from the vehicle.

h. Remove the PCV line. Release the tab at the end of the line, this should allow the PCV line to slip off of the barbed end of the metal tube it is attached to.

i. Remove the factory air filter box; lift up to release the bottom air box tabs from the grommets that secure it in place.

j. Remove the four bolts from the bottom tray and remove from the vehicle. Retain the bolts as they will be used during the installation of the AEM® intake system.

k. Remove the bolt and nut used to fasten the radiator overflow tank.

l. Lift and move the radiator overflow tank to make room for the new AEM® air box.

a. When installing the intake system, do not completely tighten the hose clamps or mounting hardware until instructed to do so.

b. Install the edge trim around the intake tube inlet of the air box.

c. Remove the two clips securing the rubber shroud to the radiator support.

d. Install the AEM® air box into the engine bay where the bottom tray of the factory air box was previously installed. Secure the rubber shroud to the air box by snapping the clips into the holes of the air box as shown.

e. Secure the air box to the vehicle by securing it with the the 4 factory bolts removed in step 2j and the 4 supplied fender washers (08160).

f. Install the supplied 1/2” grommet into the filter minder bracket (32-3017).

g. Attach the filter minder bracket to the air box using 2 of the supplied button head bolts.

h. Insert the filter minder into the filter minder bracket.

i. Attach the 5/32” hose to the filter minder’s nipple and route the hose through the hole in the air box.

j. Remove the mass airflow sensor from the factory air box and install it in the AEM® intake tube using the supplied socket bolts.

k. Install the supplied set screw into the female side of the rubber mount until in is 3/8” away from the rubber.

l. Thread the shorter end of the rubber mount into the intake tube as shown.

m. Orient the bracket (32-3079) onto the rubber mount and secure with the supplied washer and nut.

n. Install the grommet in the intake tube.

o. Install the coupler onto the throttle body.

p Install two hose clamps onto the coupler.

q. Replace the overflow tank in its original location and fasten it with the factory nut and bolt that were removed in step 2k.

r. Remove the plastic clip attached to the upper radiator hose.

s. Flip the plastic clip around and position it on the upper radiator hose as shown.

t. Reconnect the smaller hose to the plastic radiator clip.

u. Drill a 7/32” hole in the air filter lid in the location shown.

v. Install the 1/8” grommet in the hole drilled out in the previous step.

w. Install the 90° degree elbow into the grommet. To ease the installation of the elbow, you may use a small amount of soapy water.

x. Insert the filter adapter into the air filter; then install the large hose clamp over the filter neck.

y. Connect the filter minder’s 5/32” hose to the 90° elbow installed in the air filter’s cap, then place the air filter in the air box.

z. Route the intake tube under the coolant hoses and into the air box hole. Then insert the intake tube end with the “AEM® logo” into the coupler installed on the throttle body.

aa. Attach the intake tube bracket to the air box using the supplied bolts and washers.

ab. Install the radiator hose clip into the threaded insert as shown.

ac. Attach the air filter to the intake tube and orient for best fitment as shown.

ad. Secure the air filter assembly to the intake tube ensuring that the slot of the air filter neck aligns with the notch on the intake tube.

ae. Install the 3/8” straight connector into one end of the 3/8” hose. Also slide the small hose clamps over each end of the hose.

af. Attach the 3/8” hose to the metal tube that the factory PCV line was originally attached to. Ensure that the PCV hose slides over the barb and is secured with the 5/8’ hose clamp (4093-3).

ag. Insert the opposite end of the 3/8” hose into the grommet installed on the intake tube.

ah. Connect the MAF sensor harness to the mass sensor.

ai. Install the air box lid and secure it with the supplied washers and bolts.

AEM® intake system installed