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How to Replace Throttle Position Sensor 1996 - 1999 GMC K1500

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Created on: 2017-05-09

How to repair, install, fix, change or replace a broken, worn out, or damaged throttle position sensor on 96, 97, 98, 99 GMC K1500 V8 5.7L

  1. step 1 :Removing the Upper Intake
    • Remove the thumb screw from the throttle body
    • Disconnect the elbow on the PCV breather hose
    • Loosen the hose clamp
    • Disconnect the electrical connectors
    • Lift the upper intake up and off
  2. step 2 :Removing the Throttle Position Sensor
    • Disconnect the electrical connector
    • Remove the two T25 Torx bolts with a Torx bit and ratchet
    • Remove the sensor
  3. step 3 :Installing the Throttle Position Sensor
    • Insert the sensor into place
    • Tighten the two T25 Torx bolts to the sensor
    • Connect the electrical connector
  4. step 4 :Installing the Upper Intake
    • Insert the upper intake boot onto the MAF sensor
    • Tighten the hose clamp with a flat blade screwdriver
    • Line up the fitting onto the throttle body
    • Press down the intake
    • Install the PCV breather
    • Tighten the thumb screw

Tools needed

  • T25 Driver

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 1996 GMC Sierra. We're gonna show you how to remove and replace your vehicle's throttle position sensor or TPS on a 5.7 liter V8. If you like this video, please click subscribe. We have a ton more information on this and many other vehicles. If you need parts for your truck, you can follow the link down in the description of the 1AAuto.com.

Here are the items you'll need for this repair.

Remove the thumbscrew on the top of the intake tract at the throttle body. This can be done by hand or, if yours is stuck, you can lightly grab it with a pair of pliers and rotate it that way. Disconnect the rubber elbow on your PCV breather and loosen this hose clamp with a flat blade screwdriver. Now, you could disconnect the electrical connectors, undo the airbox, and remove this all as one piece, if you want, depending on what you're trying to get room for. However, this is all that's necessary for what we are trying to do. Undo the boot, lift up and forward, and remove the upper intake.

Your throttle position sensor is located, you can see down the end of the throttle blade here, there's this rod that goes to the middle and that attaches here. The other end is where your cables are. This senses the angle or position of your throttle body. To remove it, we'll disconnect the electrical connector and remove the two T25 Torx bolts with a Torx socket and a ratchet. These are very small, really don't want to put a lot of force on them. They should just come right out. It's important to make sure your Torx is seated fully into the head of the bolt. If it only goes in partway or there's dirt or rust built up in there, you're going to round it off and it's going to be pretty difficult to remove. Once the bolts are out, carefully remove your sensor.

You'll see that it's keyed there and it's a keyed shaft that it sits on, too. To reinstall your throttle position sensor, line up that keyed slot, pop it into place and reinstall your two T25 Torx bolts. Reconnect the electrical connector.

Reinstall the intake tube by hooking the tab over the front of the throttle body and setting the back into place. Reinstall the thumb screw onto the stud, reinstall the tube into the filter as well as locking it into the back of the air box. Reconnect your mass air flow and intake air temp sensors. Drop the lid back into place. Secure the tabs, install the breather line and you're good to go.

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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