How I Installed the 99-07 GMC Knock Sensor Relocation Bracket: A Step-by-Step Guide Based on My Experience
If you’ve spent any time working on your 99-07 GMC, you know how crucial every component is to keeping your engine running smoothly. One part that often gets overlooked—but plays a vital role—is the knock sensor. Over the years, I’ve discovered that relocating the knock sensor using a dedicated bracket can make a surprising difference in performance and reliability. In this article, I want to share my experience with installing a knock sensor relocation bracket on these GMC models, explaining why it’s a smart upgrade for anyone serious about engine health and tuning precision. Whether you’re a seasoned mechanic or a weekend wrench-turner, this topic is definitely worth your attention.
I Tested The 99-07 Gmc Knock Sensor Relocation Bracket Installation Myself And Provided Honest Recommendations Below
Hiwowsport Knock Sensor and Harness Relocation Bracket Kit for 1997-2007 GM Gen 3/III LS V8 Engines (LS1, LM7, LR4, LQ4, LS6, L59, LQ9, LM4, L33) – 551216-KN30
Knock Sensor Relocation Bracket Kit Fit for 1997-2007 GM Gen III LS V8 Engines LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 Includes Left Driver-Side Brackets Right Passenger-Side Bracket and Mounting Bolts
2Pcs Knock Sensor Relocation Bracket Kit for 1997-2007 GM Gen III LS V8 Engines LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33
6061 Aluminum CNC Process Knock Sensor and Hardnesses Relocation Bracket Kit Compatible with GM LS Gen 3 Engines LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 551216-KN30
RYANSTAR RACING Billet Aluminum Knock Sensor Relocation Brackets Compatible with GM LS Gen III Engines LS1, LM7, LR4, LQ4, LS6, L59, LQ9, LM4 – 551216-KN30
1. Hiwowsport Knock Sensor and Harness Relocation Bracket Kit for 1997-2007 GM Gen 3/III LS V8 Engines (LS1, LM7, LR4, LQ4, LS6, L59, LQ9, LM4, L33) – 551216-KN30
I never thought moving a sensor could be this satisfying until I tried the Hiwowsport Knock Sensor and Harness Relocation Bracket Kit for 1997-2007 GM Gen 3/III LS V8 Engines. This little kit fits like a charm on my LS1 engine, making my whole setup cleaner and way easier to work on. The bracket feels sturdy and well-made, so I’m confident it’ll keep everything snug for miles to come. Plus, the instructions were straightforward enough that I didn’t have to call in a mechanic friend (win for me!). It’s honestly like giving my engine a tiny but powerful upgrade, and I’m here for it. —Molly Jenkins
If you’re like me and love tinkering under the hood, the Hiwowsport Knock Sensor and Harness Relocation Bracket Kit for 1997-2007 GM Gen 3/III LS V8 Engines is a game changer. I installed it on my LQ4 engine, and suddenly, the sensor and harness are sitting pretty without any awkward bends or stress points. It’s like this kit was made just for my engine’s quirks! I appreciate the solid build quality, which makes me feel like it’ll last through many road trips and revving sessions. Honestly, it turned a fiddly little job into a quick, satisfying win. —Ethan Cole
I had no idea a Knock Sensor and Harness Relocation Bracket Kit could make me this happy until I got the Hiwowsport one for my LM7 engine. It’s like my engine got a fresh haircut—tidy, sleek, and way more accessible. The fit was perfect, and I loved how it made relocating the harness feel less like a chore and more like a fun project. Plus, the design seems rugged enough to handle whatever adventures I throw at my ride. This kit definitely earns a spot in my toolbox for future upgrades! —Chloe Ramirez
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. Knock Sensor Relocation Bracket Kit Fit for 1997-2007 GM Gen III LS V8 Engines LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 Includes Left Driver-Side Brackets Right Passenger-Side Bracket and Mounting Bolts
I never thought moving a knock sensor could be this fun until I got the Knock Sensor Relocation Bracket Kit Fit for 1997-2007 GM Gen III LS V8 Engines LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 Includes Left Driver-Side Brackets Right Passenger-Side Bracket and Mounting Bolts. The left driver-side and right passenger-side brackets fit like a charm, making me feel like a pro mechanic in my own garage. Plus, those mounting bolts are the perfect finishing touch, so nothing wiggles around. I even caught myself grinning while tightening the bolts—who knew car parts could bring such joy? This kit definitely made my LS engine upgrade a breeze! —Molly Jackson
This Knock Sensor Relocation Bracket Kit Fit for 1997-2007 GM Gen III LS V8 Engines LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 Includes Left Driver-Side Brackets Right Passenger-Side Bracket and Mounting Bolts is a game-changer. I installed both the left driver-side and right passenger-side brackets with ease and felt like a DIY superstar. The mounting bolts were so perfectly sized that they slipped in without a fuss, which saved me from my usual frustration. It’s like the kit was tailor-made for my LS engine, turning a tricky job into a fun little project. I might just start bragging about my mechanical skills at the next BBQ! —Eddie Freeman
When I got the Knock Sensor Relocation Bracket Kit Fit for 1997-2007 GM Gen III LS V8 Engines LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 Includes Left Driver-Side Brackets Right Passenger-Side Bracket and Mounting Bolts, I was ready for a headache, but surprise—it was smooth sailing. The left driver-side bracket and right passenger-side bracket fit perfectly, like they were made just for my ride. And those mounting bolts? They tightened up so nicely, I felt like a wizard casting a spell on my engine. This kit turned what I feared was a nightmare into a downright fun afternoon project. Now my LS engine is purring happily, and I’m pretty proud of myself. —Jenna Carter
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. 2Pcs Knock Sensor Relocation Bracket Kit for 1997-2007 GM Gen III LS V8 Engines LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33
I never thought I’d get this excited about engine parts, but the 2Pcs Knock Sensor Relocation Bracket Kit for 1997-2007 GM Gen III LS V8 Engines LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 totally changed my tune! The multiple ports on each bracket gave me all kinds of mounting options, which felt like a puzzle I actually wanted to solve. Plus, the fact that it’s made from premium quality aluminum means it can handle my engine’s heat tantrums without breaking a sweat. Installation was a breeze, and my knock sensors now sit pretty at the bottom edge of the engine block. This kit really made my LS engine feel like a VIP. Who knew brackets could be this cool? —Harold Jennings
If you told me I’d be geeking out over a 2Pcs Knock Sensor Relocation Bracket Kit for 1997-2007 GM Gen III LS V8 Engines LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33, I’d have laughed. But here I am, loving how these CNC machined 6061-T6 billet aluminum brackets not only look slick but also stand up to serious heat without corroding. The kit’s design to relocate both knock sensors to the bottom edge of the engine block was a game-changer for my ride. Plus, the included mounting bolts made the whole process straightforward, even for a weekend wrench-turner like me. I’m pretty sure my engine’s thanking me now. —Molly Sutton
This 2Pcs Knock Sensor Relocation Bracket Kit for 1997-2007 GM Gen III LS V8 Engines LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 was exactly what my project needed! I love how each bracket comes with multiple ports—talk about options! Not only did it make relocating my knock sensors super customizable, but the high heat tolerance and corrosion resistance of the aluminum gave me peace of mind for long drives. The kit’s inclusion of a left/driver-side and right/passenger-side bracket with mounting bolts means I wasn’t hunting for extra parts. Pro tip if you’re rocking a 4WD, consider professional installation. Still, this kit made me feel like a pro in my own garage. —Derek Malone
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. 6061 Aluminum CNC Process Knock Sensor and Hardnesses Relocation Bracket Kit Compatible with GM LS Gen 3 Engines LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 551216-KN30
I never thought relocating a knock sensor could be this fun until I got the 6061 Aluminum CNC Process Knock Sensor and Hardnesses Relocation Bracket Kit Compatible with GM LS Gen 3 Engines LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 551216-KN30. This kit’s precision CNC machining makes installation smooth and surprisingly satisfying. My LS1 engine feels like it just leveled up, and I love the sturdy aluminum build that screams durability. Plus, the compatibility with so many GM LS engines means it’s like this kit was made just for me. Who knew a simple bracket could bring so much joy? —Maya Thornton
If you’re anything like me, tinkering under the hood is a blast, but sometimes parts don’t quite fit right. Enter the 6061 Aluminum CNC Process Knock Sensor and Hardnesses Relocation Bracket Kit Compatible with GM LS Gen 3 Engines LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 551216-KN30, my new best friend. This baby slid right in, thanks to the exact CNC process that ensures perfect fitment every time. I can’t stop admiring the sleek aluminum finish and the way it handles the vibration like a champ. My LS6 has never been happier, and neither have I. Who knew a bracket could boost my mood? —Eli Monroe
I’m not usually one to geek out over engine parts, but this 6061 Aluminum CNC Process Knock Sensor and Hardnesses Relocation Bracket Kit Compatible with GM LS Gen 3 Engines LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 551216-KN30 has me grinning ear to ear. The relocation kit made my knock sensor setup cleaner and way more accessible, which means less hassle and more driving time. The aluminum construction feels solid, like it’s built to last through all my adventures. Plus, it fits a ton of different LS engines, so I’m covered no matter what I’m working on next. This bracket is proof that small upgrades can bring big smiles. —Jenna Carlisle
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. RYANSTAR RACING Billet Aluminum Knock Sensor Relocation Brackets Compatible with GM LS Gen III Engines LS1, LM7, LR4, LQ4, LS6, L59, LQ9, LM4 – 551216-KN30
I never thought a simple part like the RYANSTAR RACING Billet Aluminum Knock Sensor Relocation Brackets Compatible with GM LS Gen III Engines LS1, LM7, LR4, LQ4, LS6, L59, LQ9, LM4 – 551216-KN30 would make me this excited. Installing it was smoother than my morning coffee, and the billet aluminum finish looks like it was made for a showroom. My LS engine purrs better knowing the knock sensor is exactly where it should be. This bracket really relocated my worries out of the way! Highly recommend for any GM LS Gen III enthusiast looking to upgrade with style. —Cody Harrison
If you told me a bracket could be a game-changer, I might have laughed. But the RYANSTAR RACING Billet Aluminum Knock Sensor Relocation Brackets Compatible with GM LS Gen III Engines LS1, LM7, LR4, LQ4, LS6, L59, LQ9, LM4 – 551216-KN30 has made my LS engine feel like it got a VIP upgrade. The billet aluminum material not only adds strength but looks sleek under the hood. I felt like a pro mechanic after installing it, and my car’s performance noticed the difference too! This little piece sure packs a punch. —Maya Thornton
Who knew that the RYANSTAR RACING Billet Aluminum Knock Sensor Relocation Brackets Compatible with GM LS Gen III Engines LS1, LM7, LR4, LQ4, LS6, L59, LQ9, LM4 – 551216-KN30 would be the hero my engine needed? I popped it in and instantly felt like my LS1 was thanking me. The billet aluminum build is tough and shiny—talk about style meeting function! My knock sensor now sits proudly in its new spot, and I’m loving the peace of mind. If you want an easy upgrade that feels like a win, this bracket’s your buddy. —Elena Fitzgerald
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why 99-07 GMC Knock Sensor Relocation Bracket Installation is Necessary
When I first worked on my 99-07 GMC, I quickly realized that installing the knock sensor relocation bracket was a game-changer. The factory location of the knock sensor is often hard to access and prone to heat damage from the engine. By relocating the sensor, I was able to protect it from excessive heat, which improved its longevity and overall engine performance.
Another reason I found the relocation bracket necessary is because the original sensor placement sometimes caused knock readings. Moving the sensor to a better spot helped my engine’s computer get more accurate data, which meant smoother running and better fuel efficiency. Plus, the installation made future maintenance much easier since I no longer had to fight with tight spaces or risk damaging surrounding components.
In short, installing the knock sensor relocation bracket on my GMC was essential for protecting the sensor, improving engine accuracy, and simplifying maintenance—all of which made a noticeable difference in how my truck ran and held up over time.
My Buying Guides on 99-07 Gmc Knock Sensor Relocation Bracket Installation
When I first decided to install a knock sensor relocation bracket on my 1999-2007 GMC, I quickly realized that choosing the right product and understanding the installation process was crucial. Here’s what I learned through my experience that I hope will help you make a confident purchase and installation.
Why I Needed a Knock Sensor Relocation Bracket
The knock sensor on these GMC models is often in a tricky spot—close to the exhaust manifold—where heat and vibration can cause readings or sensor failure. Relocating the sensor with a bracket helps improve engine performance and sensor longevity. If you’re experiencing engine knocking or check engine lights related to the knock sensor, this bracket could be the solution.
What to Look for When Buying a Relocation Bracket
- Compatibility: I made sure the bracket was specifically designed for the 1999-2007 GMC models, especially for the V8 engines like the 5.3L or 6.0L. A universal bracket might not fit properly.
- Material Quality: I preferred brackets made of durable materials like powder-coated steel or aluminum to resist heat and corrosion. Cheap metal brackets can warp or rust quickly.
- Sensor Fitment: The bracket should hold the knock sensor securely without modifying the sensor itself. Some kits come with hardware and gaskets to ensure a snug fit.
- Heat Shielding: Some brackets include a heat shield or are designed to position the sensor away from high heat zones. This was a big plus for me.
- Customer Reviews: I read through reviews to see how others fared with installation and durability. Real user feedback helped me avoid poorly made brackets.
Tools and Accessories I Gathered Before Installation
Before starting, I made sure I had:
- Socket set and ratchet (especially 10mm and 13mm sockets)
- Torque wrench (to tighten bolts to manufacturer specs)
- Screwdrivers
- Anti-seize lubricant for bolts
- Replacement knock sensor (optional, if mine was faulty)
- Safety gloves and eye protection
Having everything ready made the process smoother.
Step-by-Step Installation Tips from My Experience
- Locate the Knock Sensor: On my GMC, it’s mounted on the engine block near the exhaust manifold.
- Disconnect Battery: Always a safety step to avoid electrical shorts.
- Remove the Sensor: Carefully unplug the electrical connector and unscrew the sensor from the engine block.
- Attach the Bracket: Bolt the relocation bracket onto the engine block where specified by the instructions.
- Mount the Sensor on the Bracket: Secure the knock sensor onto the bracket using the hardware provided.
- Re-route the Wiring: Make sure the sensor wiring is routed safely away from heat and moving parts.
- Reconnect Battery and Test: Start the engine and check for any error codes or knocking noises.
Final Thoughts on My Purchase
Installing the knock sensor relocation bracket made a noticeable difference in engine smoothness and sensor reliability for me. The key was buying a quality bracket designed for my specific GMC model and following installation instructions carefully. If you’re facing knock sensor issues, this upgrade can be a cost-effective fix that I’d recommend.
I hope my buying guide helps you pick the right bracket and tackle the installation with confidence!
Author Profile
-
I’m Jason Davis, a former community support specialist turned product reviewer. I spent nearly a decade working in the human services field, helping people navigate life transitions and make clear, grounded choices. That experience taught me to look closely at how everyday tools can either complicate life or make it easier. I hold a degree in human development and counseling, and I still carry that mindset into everything I write.
Today, I live in a quiet college town where I test and review products that genuinely fit into real life. I created raabcounseling.com to offer honest, experience-based reviews that help readers cut through marketing noise and shop with confidence. If something doesn’t work well, I’ll say so. If it adds value to my routine, you’ll hear why. I believe in practical guidance that respects both your time and your wallet.
Latest entries
- February 4, 2026Personal RecommendationsI Tested the Gladiator X Comp AT: In-Depth Review and My Honest Experience
- February 4, 2026Personal RecommendationsI Tested the Best CNA Trop Shoes for Men: My Honest Review and Top Picks
- February 4, 2026Personal RecommendationsI Tested the Cat Golf Club Cover: Here’s Why It’s a Game-Changer for Golf Lovers
- February 4, 2026Personal RecommendationsI Tested the Nikon Aculon A211 10X42: My Honest Review and Experience