Replaces
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Tools used
Remove the negative terminal from the battery. Just use a 8-millimeter wrench and just slide that out of the way. Take this cover off. Just use a 8-millimeter socket. Remove this bolt. Just pull the cover up and slide forward. Loosen up this one clamp right here. Use a straight blade screwdriver. Loosen this clamp as well. Take this hose bracket off of the intake. Just use a trim tool. Pop this off, just like that. Grab it right here, just rock it back and forth, sliding it forward. And also right here. Pop it off and pull it up.
Now, you're going to use a serpentine belt tool. We're going to use the 15-millimeter adapter on the end of it. If you don't have one, you can just use a 15-millimeter wrench. Just be careful. Loosen up the tension on it as if you're turning it clockwise. And then over on the idler, just take the belt off. Release the tensioner. Pull off your tool. Now, just take the belt off. I'm just going to take it off the harmonic balancer or the crank pulley, slide it off the tensioner. Slide it over the water pump, just to keep it out the way. If you're just doing the AC belt down below, you can just leave the belt off at this point, you wouldn't have to take it off all the way. If you're replacing it, take it off the alternator, off the power steering pump, and the idler pulley.
Now, we'll take the tensioner off. Use a 15-millimeter socket. There's three bolts in the front. Now, the bottom one's a shorter one, and the top two ones are longer. And be careful with the fan. You don't want to crack the fan if you're using a air ratchet or an electric ratchet. And pull that out. To take the idler pulley off, I'm going to use a 15-millimeter socket. And slide it out. Take the new tensioner pulley. Get the bolt started. Now, we can torque these to 37 foot-pounds. Take the new idler, get it in position and then tighten it up. Now, we'll torque this bolt to 37 foot-pounds.
All right, take the serpentine belt, and then go around the crank pulley down below, and then come up. Take one side of the belt, just go over the tensioner pulley. The other side goes on the backside, goes over the water pump, and then you're going to go down around the power steering pump pulley, and then up to the alternator. Take your belt tensioner tool. Carefully, while you're holding the belt near the idler pulley over here, take the tension off of the tool, the tensioner, and slide it under the idler. Just double-check. Make sure the belt is over all the pulleys. It looks good. Take the tool off. Should be good.
Now take the snorkel, line it up. Put it on the throttle body. And then over here on the airbox or over the mass airflow sensor, hook this holder on, just like that. A straight blade screwdriver, tighten up the worm clamp. Snug that up, and tighten this one up. Very good. Slide the cover in position, and tighten down the bolt. Take the negative terminal, connect it to the battery. Use a 8-millimeter wrench and tighten it up. Just make sure it's not...won't wiggle loose. Looks good.
Tools used
If you were to look right down here, you're gonna see a clamp. If you were to look at the other end where it connects on to the throttle body, you're gonna see another clamp. You can go ahead and loosen those up. Also, if you come right up here, you're gonna see an 8-millimeter bolt, look, if you loosen that up, you can take this right out. Once you have that out of the way, and the clamps are loosened, you can wiggle this around. I'm gonna draw it off of the throttle body right here, and I'm gonna take them right there. Take it off of right here, remove it from the vehicle. So now that we have the intake and the little shell out of the way here, it gives us a nice, clear view. You don't necessarily need to take off the shell but I just like to have it out of the way. Go ahead and relieve your tension like that. And then, I'm just gonna take the belt off of the idler pulley here, and then I can let go of that. We'll get our serpentine belt right out of the way. Let's go ahead and remove the belt. Okay, looking at our new tensioner, you can tell that you're gonna have three mounting bolts. I'm gonna use my 15-millimeters socket and my ratchet and I'm gonna remove all 3. There will be one located here, one located much lower, down near thermostat housing, and then, also one over towards the driver's side top. Start with the hardest one.
Here's our tensioner friends. Now, once you confirm that your new tensioner is correct and it matches the original, it's time to get the bolts and everything back in. You're gonna notice that two of your bolts are long and one short. The short bolt is going to be the lowest bolt, the other two longer bolts are going to be the upper bolts. I always start in all of my bolts before I tighten any of them up completely. Now, it's time to torque these. Torque them to 37 foot-pounds. All right. Go ahead and take one side, go down and around the passenger's side of the water pump which is this right here, and then, put it over the crank, which is the main pulley over there. I'm just gonna circle it. Put it up and then slide it around. I'm gonna take one, and I'm gonna come up and over the tensioner right here. And then, the other side. I'm gonna bring it down and around the water pump and then underneath the power steering pump. It's gonna fit right inside the ribs perfectly. Then, I'm gonna come up, make sure it's sitting in those ribs. There it is. Come up and over the alternator right here. This looks good. Make sure everything is situated approximately where it needs to be. That looks great. I'm gonna grab my tensioner tool. Put it on there, relieve tension. Now, I'll take this, bring it right underneath the idler pulley. This is your idler pulley. Get our tool off, give it a nice tug. And then of course, double check all of your pulleys. Every one of them that has the rib side that goes up against the belt, you need to make sure it is sitting perfectly inside the ribs. If you're wondering what your belt routing should look like, you can find it right on the front. Get our intake back on here, it's gonna go right underneath this hose here. Line it up there. Grab this, slide it in. Push it all the way in so it's up against the whole throttle body. Make sure your clamps are nice and tight. Your hose over here should have a little clippy-do. Ours is actually broken but it's going to push in right there and that will hold it secure. Put this cover back on here, just slide it all the way back so it's sitting inside the pitons. Put this down and tighten up your bolt.
Tools used
If you were to look right down here, you're gonna see a clamp. If you were to look at the other end where it connects on to the throttle body, you're gonna see another clamp. You can go ahead and loosen those up. Also, if you come right up here, you're gonna see an 8-millimeter bolt, look, if you loosen that up, you can take this right out. Once you have that out of the way, and the clamps are loosened, you can wiggle this around. I'm gonna draw it off of the throttle body right here, and I'm gonna take them right there. Take it off of right here, remove it from the vehicle. So now that we have the intake and the little shell out of the way here, it gives us a nice, clear view. You don't necessarily need to take off the shell but I just like to have it out of the way. Go ahead and relieve your tension like that. And then, I'm just gonna take the belt off of the idler pulley here, and then I can let go of that. We'll get our serpentine belt right out of the way. Let's go ahead and remove the belt. Okay, looking at our new tensioner, you can tell that you're gonna have three mounting bolts. I'm gonna use my 15-millimeters socket and my ratchet and I'm gonna remove all 3. There will be one located here, one located much lower, down near thermostat housing, and then, also one over towards the driver's side top. Start with the hardest one.
Here's our tensioner friends. Now, once you confirm that your new tensioner is correct and it matches the original, it's time to get the bolts and everything back in. You're gonna notice that two of your bolts are long and one short. The short bolt is going to be the lowest bolt, the other two longer bolts are going to be the upper bolts. I always start in all of my bolts before I tighten any of them up completely. Now, it's time to torque these. Torque them to 37 foot-pounds. All right. Go ahead and take one side, go down and around the passenger's side of the water pump which is this right here, and then, put it over the crank, which is the main pulley over there. I'm just gonna circle it. Put it up and then slide it around. I'm gonna take one, and I'm gonna come up and over the tensioner right here. And then, the other side. I'm gonna bring it down and around the water pump and then underneath the power steering pump. It's gonna fit right inside the ribs perfectly. Then, I'm gonna come up, make sure it's sitting in those ribs. There it is. Come up and over the alternator right here. This looks good. Make sure everything is situated approximately where it needs to be. That looks great. I'm gonna grab my tensioner tool. Put it on there, relieve tension. Now, I'll take this, bring it right underneath the idler pulley. This is your idler pulley. Get our tool off, give it a nice tug. And then of course, double check all of your pulleys. Every one of them that has the rib side that goes up against the belt, you need to make sure it is sitting perfectly inside the ribs. If you're wondering what your belt routing should look like, you can find it right on the front. Get our intake back on here, it's gonna go right underneath this hose here. Line it up there. Grab this, slide it in. Push it all the way in so it's up against the whole throttle body. Make sure your clamps are nice and tight. Your hose over here should have a little clippy-do. Ours is actually broken but it's going to push in right there and that will hold it secure. Put this cover back on here, just slide it all the way back so it's sitting inside the pitons. Put this down and tighten up your bolt.
Tools used
Tools used
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In this video we're going to be working with our 2002 Chevy Suburban 5.3-liter V8. We're going to show you how to remove and replace the serpentine belt tensioner. This is for the forward serpentine belt that runs all the accessories, with the exception of your air conditioning.
If you like this video, please click subscribe. We have a ton more information on this and many other vehicles. If you need this part for your car, you can follow the link down in the description over to 1AAuto.com.
Here are the items you'll need for this repair: flat blade screwdriver, 15mm wrench, 15mm socket, ratchet, socket extension
Loosen the hose clamp just after the mass air flow sensor. This is going to be the second one back from your air box. We'll do this using a flat blade screwdriver. Wiggle and twist the boot to release it from the mass air flow sensor. You may need to use your screwdriver to help peel it back here. These tend to get stuck on pretty good. We'll also remove the one at the throttle body. We'll need to disconnect the hoses from their clamps here. You can either try prying it out there, or there's also a little clamp at the bottom here that you should be able to compress, pop loose with a flat blade, and remove the intake runner from the vehicle.
We've removed some things like the radiator fan and the fan shroud to make it easier to show you what's going on, but you shouldn't need to do this if you're doing this job at home. Before removing your serpentine belt, make sure your vehicle has a belt path diagram under the hood somewhere. If this is missing or faded, you can just draw another one onto the plastic with something like a paint marker. Using a 15mm wrench on the tensioner, rotate the nut clockwise to slack the belt. Pop the belt off of whatever pulley is easiest for you to reach. Let the tension off the pulley and remove your serpentine belt.
You need a 15mm socket, ratchet, and extension to remove the three 15mm bolts on the tensioner bracket.
Reinstall the serpentine belt tensioner onto the water pump housing cover. Two longer bolts go in the upper holes, and the shortest bolt goes in the bottom. Tighten these bolts with a 15mm socket and ratchet.
Install the belt over the front grooves of the harmonic balancer or crank pulley. Bringing the right side over top of the pulley. We'll then go over top of the water pump and loop under the power steering pump, over the alternator, under the idler pulley. I'll keep this piece in my hand. Make sure that everything is seated because this one's kind of tight and you're going to want the room. Using my 15mm wrench, we'll take the tension off of the tensioner pulley, slide the belt over, double-check that our path is right, all of the belt is properly seated, and then let the tension back on.
Reinstall the intake tubing. It's easiest to set it onto the throttle body. Reengage the hoses into their clips and then get the boot over the air box. Then tighten down both clamps with a flat blade screwdriver.
Thanks for watching. Visit us at 1AAuto.com for quality auto parts, fast and free shipping, and the best customer service in the industry.
Tools used
Tools used
If you were to look right down here, you're gonna see a clamp. If you were to look at the other end where connects onto the throttle body, you're gonna see another clamp. You can go ahead and loosen those up. Also, if you come right up here, you're gonna see an 8-millimeter bolt. If you loosen that up, you can take this right out. Once you have that out of the way and the clamps are loosened, you can wiggle this around. I'm gonna draw it off of the throttle body right here, and I'm gonna take them right there. Take it off of right here, remove it from the vehicle.
So now that we have the intake and the little shell out of the way here, it gives us a nice, clear view. You don't necessarily need to take off the shell, but I just like to have it out of the way. Go ahead and relieve your tension like that. And then I'm just gonna take the belt off of the idler pulley here and then I can let go of that. We'll get our serpentine belt tool right out of the way. Let's go ahead and remove the belt. To get started on your idler pulley, one of the best things you wanna do is to compare your new one to your old one. You wanna make sure that it's overall the same diameter, which would be the length right here from top to bottom, and you also wanna make sure that the depth is approximately the same. That's gonna be the area where the belt's gonna ride. This looks great, so let's get ready for an install.
Now we're gonna use a 15-millimeter socket, remove the mounting bolt. There it is. So now looking at the backside of it, you can see the area that's holding the mounting bolt in. It's like a little clippy do. It's a single time use and we're gonna break it off. Just going to hit it with some penetrant, let that sit for a second. Now I'm gonna grab some of these cutters and I'm gonna try to grab on to any of these ears I can, try to peen them up and rip this off. You can also use a pocket screwdriver, try to get under there. There we are. We can start separating everything. We'll pull this spacer right off of there. We're gonna reuse that. Grab this stuff, just like that.
Now we're gonna take our new pulley, our old adapter. This is the spacer that goes in between the pulley and the engine itself. We'll put that right along the backside. It should fit right in. That's great. Take it like this. Start the bolt through and now go ahead and start it right into the engine. Go ahead and torque it to 37 foot-pounds. Go ahead and take one side, go down and around the passenger side of the water pump, which is this right here, and then put it over the crank, which is the main pulley over there. I'm just gonna circle it, put it on, then slide it around.
I'm gonna take one and I'm gonna come up and over the tensioner right here. And then the other side, I'm gonna bring it down and around the water pump. And then underneath the power steering pump, it's gonna fit right inside the ribs perfectly. Then I'm gonna come up, make sure it's sitting in those ribs. There it is. Come up over the alternator right here. This looks good. Make sure everything's situated approximately where it needs to be. That looks great. I'm gonna grab my tensioner tool. Put it on there. Relieve tension.
Now we'll take this, bring it right in underneath the idler pulley. This is your idler pulley. Get our tool off, give it a nice tug. And then of course double-check all of your pulleys. Every one of them that has the rib side that goes up against the belt, you need to make sure it's sitting perfectly inside the ribs. If you're wondering what your belt routing should look like, you can find it right on the front. Get our air intake back on here. It's gonna go right underneath this hose here. Line it up there. Grab this, slide it in, push it all the way in so it's up against the whole throttle body. Make sure your clamps are nice and tight. Your hose over here should have a little clippy do. Ours is actually broken, but it's gonna push in right there and that'll hold it secure. This cover back on here, just slide it all the way back so it's sitting inside the pitons. Put this down and tighten up your bolt.
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