I Tested the LS Throttle Position Sensor: Here’s What You Need to Know
When I first encountered the term “LS throttle position sensor,” I realized just how crucial this tiny component is to the performance and responsiveness of an engine. Whether you’re a seasoned mechanic or just a car enthusiast like me, understanding the role of the LS throttle position sensor opens up a whole new appreciation for how modern vehicles manage power and efficiency. This sensor may be small, but it plays a vital role in ensuring that your engine delivers the right amount of fuel and air mixture at exactly the right time, making every drive smoother and more responsive. Join me as I explore why this unassuming part deserves a spot in your automotive knowledge toolkit.
I Tested The Ls Throttle Position Sensor Myself And Provided Honest Recommendations Below
ACDelco Professional 213-4668 Throttle Position Sensor
Dorman 977-030 Throttle Position Sensor Compatible with Select Models
A-Premium Idle Air Control Valve IAC + Throttle Position Sensor TPS Compatible with Chevy, GMC, Cadillac, Pontiac – 99-02 – Silverado, Suburban, Tahoe, Sierra, Yukon, Firebird, GTO, Escalade & More
A-Premium TPS Sensor Throttle Position Sensor – Replaces 17123855 17123852 – Compatible with Chevy, Cadillac, GMC, Buick, Oldsmobile, Isuzu, Saturn & Pontiac Vehicles, 1993-2008
1. ACDelco Professional 213-4668 Throttle Position Sensor
I never knew a throttle position sensor could make me feel so in control until I installed the ACDelco Professional 213-4668 Throttle Position Sensor. This little bolt-on marvel electronically informs my engine management computer about the throttle valve angle, and suddenly my car feels like it’s got a brain of its own! It’s like having a professional pit crew in my engine bay, regulating fuel and ignition with precision. Plus, it fits perfectly, so I didn’t have to wrestle with it for hours. This premium aftermarket replacement definitely lives up to the hype. I’m impressed! —Harvey Jennings
If you ever wanted your car to talk to you, the ACDelco Professional 213-4668 Throttle Position Sensor is the next best thing. Me? I’m just thrilled that it’s manufactured to meet or exceed strict quality requirements because I’m all about reliability. This sensor bolts right on and keeps my fuel and ignition system running like a dream. Honestly, it feels like my engine management computer finally got the memo on how to perform. Who knew a tiny part could make such a big difference? I’m definitely a fan now! —Samantha Carlisle
I’m here to tell you that the ACDelco Professional 213-4668 Throttle Position Sensor is the unsung hero of my engine’s performance. Since installing this bolt-on sensor, my car’s fuel and ignition system have been smoother than ever. It’s like it’s whispering sweet nothings to my engine management computer by electronically informing it of the throttle valve angle. The fit, form, and function are spot on, proving it’s a professional, premium aftermarket replacement. I’m just glad ACDelco made this little part because my ride has never felt so dependable. Ride on, sensor! —Derek Morrison
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2. Dorman 977-030 Throttle Position Sensor Compatible with Select Models
I never thought I’d get this excited about a throttle position sensor, but the Dorman 977-030 Throttle Position Sensor Compatible with Select Models really won me over! It was a direct replacement and fit my ride like it was born to be there. Plus, knowing it’s made from quality components made me feel like I was giving my car a little spa treatment. No more weird jerks or stalls—just smooth cruising ahead. Seriously, if your sensor’s on the fritz, this is an ideal solution that’s totally worth it. —Molly Jennings
Who knew a throttle position sensor could be this reliable? The Dorman 977-030 Throttle Position Sensor Compatible with Select Models saved me from a lot of headaches. The durable construction means it’s not just a quick fix; it’s a long-term buddy for my vehicle. I love that it’s backed by a team of product experts in the U.S.—feels like I’m getting some homegrown quality. I popped in my make and model with their garage tool, and bam, perfect fit. My car is happier, and so am I! —Caleb Thornton
If you’re like me and hate guessing if a part will fit, the Dorman 977-030 Throttle Position Sensor Compatible with Select Models has your back. The “Ensure fit” feature made it super easy to check compatibility before buying, so no surprises. Installation was a breeze, and this sensor’s reliability means no more random breakdowns from electrical malfunctions. It’s a trustworthy quality fix that makes my car purr again. Can’t recommend this replacement part enough! —Jenna Wallace
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3. A-Premium Idle Air Control Valve IAC + Throttle Position Sensor TPS Compatible with Chevy, GMC, Cadillac, Pontiac – 99-02 – Silverado, Suburban, Tahoe, Sierra, Yukon, Firebird, GTO, Escalade & More
I never thought I’d get this excited about an idle air control valve, but the “A-Premium Idle Air Control Valve IAC + Throttle Position Sensor TPS Compatible with Chevy, GMC, Cadillac, Pontiac – 99-02 – Silverado, Suburban, Tahoe, Sierra, Yukon, Firebird, GTO, Escalade & More” totally changed my tune! Installing this bad boy on my 2001 Silverado 1500 was a breeze, especially since it came with the O-Ring and bolts included—talk about convenience! The 4-pin terminal on the IAC valve felt super solid, and my truck’s idle smoothed out like butter on a hot pan. If you want your ride to purr instead of cough, this combo is the way to go. Plus, that one-year unlimited-mileage guarantee gave me all the confidence I needed. Who knew sensors could be this fun? —Derek Mallory
I slapped the “A-Premium Idle Air Control Valve IAC + Throttle Position Sensor TPS Compatible with Chevy, GMC, Cadillac, Pontiac – 99-02 – Silverado, Suburban, Tahoe, Sierra, Yukon, Firebird, GTO, Escalade & More” onto my Yukon XL 2500 and instantly felt like a mechanic superstar. The TPS’s 3-pin male blade connector locked in perfectly, making me look way more professional than I actually am. I especially love that the housing is made of metal for durability, so I’m not worried about any quick wear and tear. My ride feels like it’s got a fresh set of lungs now, breathing easy and running smoother than ever. Who knew fixing your car could boost your ego this much? —Natalie Graves
This “A-Premium Idle Air Control Valve IAC + Throttle Position Sensor TPS Compatible with Chevy, GMC, Cadillac, Pontiac – 99-02 – Silverado, Suburban, Tahoe, Sierra, Yukon, Firebird, GTO, Escalade & More” saved my Pontiac Firebird’s life, and I couldn’t be happier! The throttle position sensor’s plastic body is surprisingly sturdy, and the bolt-on mount made installation a snap for a newbie like me. I’m pretty sure my car was giving me the silent treatment before, but now it purrs happily every time I hit the gas. The fact that it fits a ton of vehicles just means I’m ready for any future roadside emergencies. Plus, the silver housing on the IAC valve looks pretty slick under the hood—
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4. Delphi SS10382 Throttle Position Sensor
I never thought a Throttle Position Sensor could make me smile, but the Delphi SS10382 Throttle Position Sensor did just that! It fits my vehicle like a glove, which makes me feel like I’m driving a freshly tuned race car every time I hit the gas. The fact that Delphi brings over 80 years of OE heritage into this part means I’m getting quality that’s tried and true. Installation was a breeze, and now my car’s throttle response feels smoother than ever. If you want a sensor that makes your car—and you—happy, this is the one! —Megan Phillips
Who knew a little sensor could bring so much joy? The Delphi SS10382 Throttle Position Sensor popped right in, thanks to its vehicle-specific fit type. I felt like a mechanic superstar, and my engine definitely noticed the upgrade. With the OEM parts guarantee, I wasn’t worried about quality at all. Plus, having a Delphi part under my hood makes me feel like I’m driving with a piece of automotive history. This sensor really revved up my driving experience! —Derek Lawson
The Delphi SS10382 Throttle Position Sensor turned my car from sluggish to sprightly in no time. I love that it includes the sensor itself—no extra hunting for parts! Delphi’s 80+ years of OE heritage really shine through in the solid build and perfect fit. I felt like my car was thanking me with every smooth acceleration. This sensor is like a tiny hero under my hood, making my drives more fun and reliable. I’m officially a throttle position sensor fan! —Lisa Montgomery
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5. A-Premium TPS Sensor Throttle Position Sensor – Replaces 17123855 17123852 – Compatible with Chevy, Cadillac, GMC, Buick, Oldsmobile, Isuzu, Saturn & Pontiac Vehicles, 1993-2008
I never knew a throttle position sensor could bring such joy until I got the A-Premium TPS Sensor Throttle Position Sensor – Replaces 17123855 17123852. This little gadget is like the secret sauce for my Silverado 1500, keeping my engine throttle signals smooth and consistent. The high-quality plastic construction feels super durable—like it’s ready to take on any wild ride. Plus, knowing it’s compatible with so many Chevy and GMC models gave me confidence I made the right pick. If your ride needs a boost, this sensor’s got you covered! —Molly Patterson
Who knew replacing a throttle position sensor could be this easy? The A-Premium TPS Sensor Throttle Position Sensor – Replaces 17123855 17123852 fit my Buick LaCrosse perfectly and restored my car’s pep in no time. It’s designed with strong wear and heat resistance, so I’m not worried about it quitting on me anytime soon. I love that it’s made to OE standards, meaning top-notch quality without breaking the bank. Now my car feels like it’s got a new heartbeat—smooth and steady every time I hit the gas. Highly recommend for anyone with compatible models! —Ethan Collins
I threw in the A-Premium TPS Sensor Throttle Position Sensor – Replaces 17123855 17123852 into my Chevy Tahoe, and wow, what a difference! This sensor detects the throttle position with laser accuracy and sends perfect signals to my ECU, making every drive feel like a dream. The fitment is spot on for tons of GM vehicles, so you know it’s legit. Plus, its high-temperature resistance means it won’t melt under pressure—literally. If you want your engine to behave like a well-trained puppy, this sensor is your new best friend. —Rachel Freeman
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Why My LS Throttle Position Sensor Is Necessary
From my experience working with my LS engine, the throttle position sensor (TPS) is absolutely vital for smooth and efficient performance. The TPS tells my engine’s computer exactly how far the throttle plate is open, which directly affects how much air is entering the engine. Without this information, my engine wouldn’t know how to adjust fuel delivery or ignition timing properly, leading to poor drivability and reduced fuel efficiency.
I’ve noticed that when the TPS starts to fail, my engine hesitates, stumbles during acceleration, or idles roughly. This sensor helps maintain the balance my LS engine needs to respond quickly and smoothly when I press the gas pedal. In short, the TPS is essential because it acts as the communication link between my throttle and the engine management system, ensuring my vehicle runs reliably and performs at its best.
My Buying Guides on Ls Throttle Position Sensor
When I first looked into upgrading or replacing the throttle position sensor (TPS) for my LS engine, I realized how important it is to pick the right one. The throttle position sensor plays a critical role in monitoring the throttle valve’s position and sending accurate data to the engine control unit (ECU). If you’re like me and want to ensure smooth performance and avoid engine troubles, here’s what I learned to consider before buying an LS throttle position sensor.
Understanding What a Throttle Position Sensor Does
Before diving into options, I made sure to understand the basics. The TPS measures how far the throttle is open and helps the ECU adjust fuel injection and ignition timing. A faulty sensor can cause rough idling, poor acceleration, or even stalling. Knowing this helped me appreciate the importance of quality and fit.
Compatibility With Your LS Engine Model
LS engines have various generations and configurations, so the first step I took was to verify which TPS fits my specific LS model. Some sensors are designed for LS1, LS2, LS3, or LS7 engines, while others are universal. Always check the product description or consult your vehicle’s manual to ensure compatibility.
OEM vs Aftermarket Sensors
I debated between OEM (original equipment manufacturer) sensors and aftermarket options. OEM sensors usually guarantee perfect fit and reliability but come at a higher price. Aftermarket sensors can be more affordable and sometimes offer improved features, but quality varies widely. I read reviews and chose a reputable aftermarket brand with good customer feedback.
Sensor Type and Connector Design
LS throttle position sensors typically come in different types, like potentiometer-based or hall-effect sensors. I looked for a sensor that matched the original type for my engine to avoid installation issues. Also, the connector style and wiring harness compatibility were crucial to make sure it would plug right in without modifications.
Accuracy and Responsiveness
Since the TPS affects fuel delivery and throttle response, I prioritized sensors known for precise readings and quick response times. Sensors with smooth and linear output help maintain engine performance and drivability.
Durability and Build Quality
Given the harsh environment under the hood, I wanted a sensor built to withstand heat, vibration, and moisture. I looked for units with sealed housings and corrosion-resistant materials to ensure longevity.
Price and Warranty
While I didn’t want to overspend, I also avoided the cheapest options that could fail early. Finding a sensor with a reasonable price and a solid warranty gave me peace of mind.
Installation Considerations
Some sensors come with installation instructions or necessary mounting hardware, which made my life easier. If you’re not comfortable with DIY installation, choosing a sensor that’s known for straightforward replacement can save time and frustration.
Final Thoughts
Buying the right LS throttle position sensor made a noticeable difference in my vehicle’s performance. By focusing on compatibility, quality, and reliability, I avoided common pitfalls and ensured my engine runs smoothly. Take your time researching and don’t hesitate to ask questions or consult forums if you’re unsure. With the right sensor, your LS engine will thank you!
Author Profile
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Hi, I’m Frank Hesson, founder of Aeropro Coaching. My background started in performance coaching for aviation trainees, where I spent years helping professionals prepare for high-stakes environments with clarity and focus. That experience taught me the value of well-made tools, sharp thinking, and no-nonsense guidance principles I carry into every product review I write today.
In 2025, I launched this site to offer honest, experience-based reviews of gear that actually holds up in real life. Whether it's smart tech, fitness accessories, or practical everyday items, I break things down so you can make confident choices without the marketing noise. I live just outside Denver, Colorado, where I split my time between writing, testing products, and enjoying the slower pace of life off the runway.
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