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June 1, 2026
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About TRQ:
TRQ is a trusted brand dedicated to making every repair a success story by combining premium parts with easy installation. Each TRQ part is engineered by a team of automotive experts to meet or exceed OEM standards, delivering enhanced performance and maximum longevity. With rigorous in-house testing, the brand ensures superior fit and function across every product line. TRQ also provides customers with best-in-class, step-by-step installation videos—so you can complete repairs with confidence, whether you're a first-time DIYer or an industry professional.
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Hi, I'm Mike from 1AAuto. We've been selling auto parts for over 30 years! We're dedicated to delivering quality auto parts, expert customer service, and fast and free shipping, all backed by our 100% satisfaction guarantee. So visit us at 1AAuto.com, your trusted source for quality auto parts.
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.
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Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Mike from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video I'm going to show you how to replace a serpentine belt. This 2005 Chevy Silverado has the 4.3 Liter V6 so this procedure is the same for any Silverado or Sierra that has the 4.3 Liter V6 from 1999 through 2007.
The serpentine belt is pretty easy. First, make sure you find your belt diagram. This is the 4.3 Liter V6 so there's the diagram and it matches up with what's in the engine compartment. Removing the belt is pretty easy. Put a 3/8 inch drive ratchet right in here. Pull on that. See that loosens the belt. Move it from the idler pulley up top. Release that slowly. Then you pull your belt right off.
To put the belt on, you want to follow the pattern. You can't really see this but I'm going to go down around the crank pulley first, then I bring this up and around the water pump here. Then it goes from the water pump down to the power steering pulley here, up to the A/C pulley, across the tensioner and the alternator. I'm just going to reach down and make sure everything is pretty much on the way it should be. Now, you can press down when you see the belt starts to tighten up as you try and press it on to the idler here. Then we take our wrench, put it in, press down. That gives us the slack to put the belt right in here. Then just check. Make sure it's on all the pulleys correctly. It's in the grooves. It's actually not quite on there correctly, so pull it off here. Okay, the new belt is on.
We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.
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Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the internet. Hi, I'm Mike Green, I'm one of the owners of 1A Auto. I want to help you save time and money, repairing and maintaining your vehicle. I'm going to use my 20 plus years experience restoring and repairing cars and trucks like this. To show you the correct way to install part from 1AAuto.com. The right parts, installed correctly. That's going to save you time and money. Thank you and enjoy the video.
In this video, we're going to replace the serpentine belt tensioner on this 2002 Sierra with a six liter. The same procedure for any GMC or Chevy truck, 99' to 07' basically. With 4.8, 5.3, or six liter v8's. Tools you'll need, flat blade screwdriver, 15mm socket and ratchet with a small extension. Symptom of a bad belt tensioner is a squeaking from the front of your engine. Could also be your idler pulley. Just check out our other video to see the idler pulley removal and installation. First you want to move your intake hose. By removing, or loosening two clamps, one there and one there. We're going to speed up through this part here. Use your screwdriver to pry in, break the rubber loose and the plastic, Maybe twist it a little bit as well. Then pull it from the throttle body and also pry ... there's a little clip that hold the radiator hose in, pry that out with your screwdriver as well. Now I'm going to install it back on my intake hose, to make it easier for later.
Now you can see your tensioner is right here. What you're going to do is take a 15mm socket and ratchet and put the socket on there. Then that takes the ... you just move the ratchet clockwise and that takes the tension off. You can pull the belt either off of your tensioner or I'm actually over here pulling it off of the idler pulley in the middle. Then slowly release this back. It's going to actually go back further than the original point. Now get your wrench back off. Once you have your belt off, many times you can reach in here and spin these and hear some grinding or shaking, or shake them back and forth and you can there's some play in that pulley. This is your idler pulley here. Many times there is play, this one feels actually pretty good. There is also another tensioner on this vehicle. It's for the AC belt and you can see it right down in there.
You can see that belt is actually looking a little cracked, so I'm going to replace that as well. That will be on a different video, but that's something to keep in mind. You may take your drive belt off and realize that these ones really aren't the problem. Your noise might be coming from the AC tensioner down there. You can check out our other video to see that. To remove your tensioner there's three bolts. You can see one here, one down lower, and then there's one right down below there. Those are 15mm bolts. I'm going to use a 15mm socket with an extension and a ratchet and remove these bolts. I'm going to really speed through taking these bolts off. You don't really need to see me working a ratchet. Pretty all surprised on this truck, truck has got a lot of miles and it doesn't look like this has been replaced before. The bolts came loose pretty easy.
Then, as you probably see here, I actually used my fingers to loosen them or take them out most of the way. Here I am just removing the last top bolt. Now the tensioner comes up and out. Here you can see, here's the original tensioner, new tensioner from 1A Auto. All the same, going to mount the same. What I usually like to do is ... that actually goes in like that. Take our top bolt, put it in, put it down in, and start that top bolt. Take our bottom, long bolt, put it in, start it. Then our third bolt that's way down on the bottom, put it in and start, and then tighten them up. Once again, we'll fly through me just tightening these three bolts. When you tighten the bolts you want to probably give them a final tightening 30 to 35 foot pounds. To put the belt back on, what you want to find is your routing diagram.
We're going to be using this one right here. The solid belt is the one that we're going to be looking at. What you're going to do is actually feed it down and around your crank pulley first. Then up and over your water pump, around your power steering, and then up in here. Then you'll pull, what I usually do is pull on here and then pull it up onto the alternator. I'll show you that, you can't really film it very well, so you'll have to take ... Of course, I can't really film it that well, so you have to take my word for it that that's what I'm doing. You can take your belt, feed it down, feed it down, and just make a loop. Make sure it goes all the way around your crank pulley, over the water pump here, and down and around the power steering pump. First I went down and around my crank pulley, up and around the water pump, with the back side of the belt. Then around the power steering pump. Now I have this part that I can hold to put onto the alternator.
I'm just going to set it there for a second. Took my socket, put it on my 15mm bolt on my tensioner. Then while I pull this way on the tensioner, I'll take the belt and pull it up and onto the alternator. Then the tensioner takes over and I'm just going to push it on a little more to my idler pulley here. Make sure it's pretty well centered. After you have the belt on, just a quick check, make sure it's on all the pulleys. Look way down at the crank pulley and make sure that it's on correctly down there. Also, obviously over here, the alternator and the power steering pulley. Everything looks good. We're going to fast forward though this section, which is just putting that tube back in basically, and pushing the rubber onto the plastic. Tightening up the clamps and reinstalling that little clip that held the radiator hose to it. After that you should be pretty much all set.
We hope this helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the internet. Please feel free to call us toll free 888-844-3393. We're the company that's here for you on the internet and in person.
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