Today on this 2009 Chevrolet Silverado 1500 series with a 5.3 liter engine we will be installing the AFE air intake system, part number AFE51-11752. The first thing we are going to do is remove the engine cover. It pops right off since it is a press fit. Next, we are going to loosen the clamp here that is attaching the tube to the intake housing and throttle body. We will do the same thing on the clamp on the other side. Next we are going to move over and disconnect the wiring harness from the sensor. Then we are going to remove the plastic line coolant brace from the intake tube. You can see this is a push rivet type connector. I an going to use a rivet removal tool, if you do not have one of these you can use a flat head screwdriver. Just slide it in there and separate the two. 1:00
From there we will move up and unplug the stock breather line. With all those things disconnected we can take and remove the stock intake tube. You can see we just need to pull away in the two areas where we loosened the clamps. Then pull the unit out. Then remove the stock air box. This is just press fitted in, so we are going to pull up and unseat it and pull it out. If we go back to the vehicle and look where the air box was sitting, there is a stock housing bracket here. We want to remove that from the vehicle. There are four bolts holding it into place. You want to save these bolts because we will reuse them. 1:44
From there we are going to move on to our AFE aftermarket system. The first thing we are going to do is the air filler adapter into the housing. From there we are going to rotate it into position like so. Then put the button headed screws in to hold the filler adapter into place. After that, we will go to the stock air box system and remove the MAF sensor from it and remount it. Now we will take the intake housing and mount it into the vehicle. We will set it back into position where the air box was before. You can see here at the bottom we have four existing holes. That will align with the four bolts we removed earlier from the stock housing. Then we will take and reuse the existing bolts that we removed earlier to fasten it into place. Now we will go back to our new intake system and install the brass nipple into the intake tube. You can see we have got a threaded piece on the intake tube that the nipple will thread into. You want to take a regular or crested wrench and tighten that down. When tightening it down, the threads will not fully seat into the nut. You want to take it until you get some resistance and give it another turn with your wrench. 4:00
While we are here we are going to set up our coupler and reducer sleeves with the proper clamps. There are three different types of clamps that come with the kit. They do have specific numbers that coincide with the instructions. What we have done is loosen up the clamps fully and slide them on. We will do the same thing for the reducer. With those sub-parts set up we will go back to the vehicle and finalize our installation. We will start with the coupling, by ing it onto the throttle body. We will leave it there loose for the time being, we will not tighten the clamps just yet. Move onto the reducer next, slide it onto the air filter adapter, with the smaller side sliding onto the adapter. Again, we are not going to tighten those up just yet. To remove the tube we want to rotate the whole hose around. If you look here on the backside there is a release. I will use a flat head screwdriver and push that in and around and pull it off. Now I will take the breather hose and install it on the nipple on the intake tube. Then we can take the intake tube and slide it onto the coupling and reducer. When you get into position you want to make sure you realign it so the openings are parallel. 5:22
Now we are going to plug the breather tube into the existing location on the vehicle. With the line connected we are going to take the filter and put it into place. We want to take the clamp and it on top of the filter. Then slide it into position over the tube. Make sure you have the clamp bolt in a position you can tighten it up. With the filter on we can tighten our clamps down. Start with the one on the throttle body here and move over to the reducer sleeve. Again, you want to make sure your intake tube is fully ed up to the point where it reduces down. Next we will go to the clamp for the filter and tighten it down. With all those clamps tightened down you want to plug our sensor back in. Finally, install the cover onto our housing and tighten it down. With our cover tightened down, our installation is complete. That will conclude the installation of our AFE intake system, part number AFE51-11752.