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Hi, I'm Don from 1A Auto. I hope this how-to video helps you out, and the next time you need a part for your vehicle, think of 1AAuto.com. Thanks.
In this video, we're going to show you how to replace the throttle position sensor on this 2002 Chevy Suburban with the V8 5.3 liter engine. The items you'll need for this includes a 10mm and 15mm socket, a ratchet, a flat blade screw driver, a pair of pliers, a pry bar, a T20 Torx driver, an 8mm wrench, and a hammer.
To start off, you want to disconnect your negative battery cable. Use your 8mm wrench and just loosen that up. Then it just pulls free. Set it aside. Next, you want to loosen up this hose clamp right here. Then loosen up the hose clamp right over here. Now, you can pull this intake hose forward and pry this part free. Lift it up. Now, using your pair of pliers, just push the clip, disconnect that lower hose, and set this intake aside. Using a 15mm socket and ratchet put it on the tensioner, pull the tensioner up, and pull that belt off your alternator. Then, carefully release the tension on the ratchet.
Pry up this tab and disconnect your alternator harness. Then pull back this rubber boot and remove this 10mm nut. That wire just pulls free. Now remove these two 15mm bolts. We'll fast-forward as Don does that. Using your pry bar, just pry the alternator up and out. Once you do one side, just repeat the process on the other side of the alternator. Now, pull back on this tab and disconnect your harness, and then remove these two T20 bolts. We'll just fast-forward as Don does this. Now, the sensor will just pull free.
Take your new sensor and push it into place and replace those two T20 screws. We'll fast-forward as Don tightens those up. Then reconnect your harness. Put your alternator back down into place and then pry it until you can line up those holes. Then push your first bolt in. The first one's going to be a little more difficult than the second one will be, because you're still trying to line everything up. Just use a hammer to help knock that bolt in. Once you get it to about this point right here, you're all set. The second bolt's going to be a lot easier to put in. Now, we'll just fast-forward as Don tightens those up with the 15mm socket and ratchet.
Reconnect the harness to your alternator. Put this wire back into place, and replace that 10mm nut. Then put that boot back over it. Again, use your 15mm socket and ratchet on the tensioner, and then pull your belt back up and on to the alternator. Now, take this upper intake assembly, push it back down into place, and push it back onto the engine. Re-clip that lower hose, then reconnect this hose, and tighten up those 2 hose clamps. Now replace your negative battery cable and tighten it up with your 8mm wrench, and you're all set.
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