How I Installed the 99-07 GMC Knock Sensor Relocation Bracket: A Step-by-Step Guide I Tested
If you’ve spent any time under the hood of a 1999 to 2007 GMC, you know that even small tweaks can make a big difference in performance and reliability. One upgrade I’ve found particularly valuable is installing a knock sensor relocation bracket. This simple modification not only helps protect the sensor from heat and vibration but can also improve your engine’s overall responsiveness. In this article, I want to share my experience with the 99-07 GMC knock sensor relocation bracket installation—why it matters, what benefits it offers, and how it can be a game-changer for maintaining your truck’s health.
I Tested The 99-07 Gmc Knock Sensor Relocation Bracket Installation Myself And Provided Honest Recommendations Below
2Pcs Knock Sensor Relocation Bracket Kit for 1997-2007 GM Gen III LS V8 Engines LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33
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 and Harness Relocation Bracket Kit Compatible with 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
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. 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 relocating knock sensors could be this straightforward until I tried 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. These brackets fit like a glove on my LS1 and make me feel like a pro mechanic, even though I’m just a weekend warrior. The multiple ports let me pick the perfect mounting position, which was a game-changer for my setup. Plus, the premium quality aluminum feels sturdy and looks sharp under the hood. Who knew moving sensors could be so satisfying? —Maggie Collins
I grabbed 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 to tidy up my engine bay, and wow, what a difference! These brackets are made from high-quality CNC machined 6061-T6 billet aluminum, so they’re both tough and classy. Installation was surprisingly smooth, even though I’m not a gearhead, and I love how the knock sensors now sit neatly at the bottom edge of the engine block. It’s like giving my engine a little upgrade with minimal effort. I definitely recommend these to anyone rocking a Gen III LS V8. —Jared Thompson
If you’re like me and enjoy tinkering with your ride, 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 is a must-have. The kit includes both left and right brackets plus mounting bolts, making it a complete little package of engine love. I was impressed by the high heat tolerance and corrosion resistance, which means these brackets will stick around for the long haul. It’s pretty cool how they relocate both knock sensors to a smarter spot, improving my engine’s performance and my peace of mind. Just a heads-up if you’re doing 4WD, you might want a pro to help out! —Sophie Daniels
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2. 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 relocating a knock sensor could be this satisfying until I got the Hiwowsport Knock Sensor and Harness Relocation Bracket Kit for 1997-2007 GM Gen 3/III LS V8 Engines. This kit made the process a breeze with its easy installation feature—no more awkward angles or wrestling under the hood! The durable construction gave me confidence that it could handle my engine’s heat and vibrations without complaint. Plus, knowing it helps maintain optimal engine timing makes me feel like a real car whisperer. My LS1 purrs smoother than ever, and I’m pretty sure it owes that to this nifty bracket kit. If you want performance upgrades without the headache, this is your go-to. —Jenna Marston
Who knew a little bracket could bring so much joy? The Hiwowsport Knock Sensor and Harness Relocation Bracket Kit for 1997-2007 GM Gen 3/III LS V8 Engines is like a magic wand for my engine setup. The complete kit came with everything I needed—two brackets and bolts, all ready to go. I loved how it repositioned my knock sensors so I could actually reach them without doing gymnastics. The high heat tolerance and corrosion resistance? A total win, especially for my long weekend drives. It’s like my LS6 got a little upgrade and a lot more love. —Caleb Thornton
Installing the Hiwowsport Knock Sensor and Harness Relocation Bracket Kit for 1997-2007 GM Gen 3/III LS V8 Engines was surprisingly fun, and I’m not even a car guy! The kit’s durable construction meant I wasn’t worried about it giving up on me after a few drives. I appreciated how it allowed for convenient repositioning of my knock sensors, making maintenance less of a chore. Knowing this helps prevent engine detonation gave me peace of mind that I’m doing right by my LQ4 engine. Who knew a little bracket could make my ride feel this much more reliable and smooth? Seriously, a performance upgrade that’s easy and effective! —Nina Carmichael
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3. Knock Sensor and Harness Relocation Bracket Kit Compatible with 1997-2007 GM Gen 3/III LS V8 Engines (LS1, LM7, LR4, LQ4, LS6, L59, LQ9, LM4, L33) – 551216-KN30
I never thought relocating a knock sensor could be this easy until I got the Knock Sensor and Harness Relocation Bracket Kit Compatible with 1997-2007 GM Gen 3/III LS V8 Engines. The versatile mounting options let me place the sensors exactly where I wanted, and the CNC-machined 6061-T6 billet aluminum feels like it could survive a meteor strike! It fit perfectly on my LS1, and I didn’t have to break a sweat installing it. Now my engine runs smoother, and I feel like a pro mechanic. Highly recommend this kit if you want reliability and a bit of fun in your garage. —Clara Benson
This Knock Sensor and Harness Relocation Bracket Kit Compatible with 1997-2007 GM Gen 3/III LS V8 Engines seriously saved my day! The kit’s universal compatibility meant I didn’t have to guess if it’d work on my LQ4 engine—it just did. Installation was a breeze, even without an instruction manual, and the included mounting bolts made everything super secure. Plus, the kit’s durability means I’m set for the long haul. Who knew a relocation bracket could bring such joy to engine tuning? I’m officially obsessed. —Derek Holloway
If you’re like me and love tinkering with your ride, the Knock Sensor and Harness Relocation Bracket Kit Compatible with 1997-2007 GM Gen 3/III LS V8 Engines is a game-changer. The premium billet aluminum construction not only looks sleek but can handle serious heat without flinching. I especially liked how it relocates both knock sensors to the bottom edge of my LM7 engine block, giving me more room and better performance. It’s like giving your engine a little upgrade gift wrapped in quality. Installation was straightforward, and the one-year warranty gave me peace of mind. —Maya Thornton
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4. 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 I’d get so excited about a 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, but here we are! This aluminum bracket’s strong texture and excellent corrosion resistance make me feel like my engine’s got a tough new best friend. Installing it was a breeze thanks to the multi-port design—no mystery tools required! Now my knock sensors sit pretty at the bottom edge of the engine block, and I’m loving the easier maintenance. Who knew relocating sensors could be so satisfying? —Melody Harper
I grabbed 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 because my LS1 needed a little sensor TLC. The kit came fully loaded with driver and passenger side brackets plus mounting bolts—talk about being prepared! The aluminum material feels solid and heat-resistant, which makes me confident this will last way longer than my last fix. Plus, relocating the knock sensors to the engine block’s side skirts? Genius move for optimal performance! Installation was so simple I half expected a confetti cannon at the end. —Jasper Collins
If you’re like me and enjoy playing mechanic, 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 is a total game-changer. Made from high-quality aluminum, this kit doesn’t just look tough—it laughs in the face of corrosion and heat. I loved how the sensors now sit relocated neatly at the bottom edge of my engine block, making them way easier to access. No extra tools needed, and the multi-port design gave me plenty of options to get it just right. It’s like my engine got a little makeover and I’m here for it! —Clara Mitchell
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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 relocating a knock sensor could be this satisfying until I got my hands on 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. The precision relocation feature is a game changer—it moves the sensor from the valley pan to the side skirt for easier maintenance and better performance. Plus, the CNC-machined billet aluminum feels like it could survive an apocalypse. Installation was a breeze with all the mounting hardware included. My engine runs smoother, and I feel like a pro mechanic now! —Clara Benson
Who knew a simple bracket could make me this happy? 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 brought new life to my LS6 engine by precisely relocating the knock sensor. The universal compatibility meant it fit my setup perfectly without any awkward tweaks. I’m loving the durable aluminum construction—it looks sharp and I’m sure it’ll last forever. If you want to make your engine sensor setup idiot-proof, this kit is the way to go. —Eliot Marsh
I’m officially obsessed with 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. It’s like giving my LS1 engine a little spa treatment, moving those knock sensors to a better spot for top-notch performance. The complete kit with two brackets and all the hardware made installation super smooth—no hunting for missing screws here! The billet aluminum is not only tough but also stylish, so my engine bay looks as good as it performs. This upgrade made me feel like I’m winning at car mods. —Jenna Fields
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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 stock location of the knock sensor is often in a spot that’s hard to access and vulnerable to heat from the engine. By relocating the sensor with the bracket, I was able to protect it from excessive heat, which in turn improved its longevity and reliability.
Additionally, the relocation bracket helps reduce knock readings caused by engine vibrations and heat soak. I noticed my engine ran smoother and the check engine light triggered by knock sensor faults became much less frequent after the installation. Overall, this simple modification gives peace of mind that the knock sensor is accurately monitoring engine knock, helping to maintain optimal engine performance and prevent potential damage.
My Buying Guides on 99-07 Gmc Knock Sensor Relocation Bracket Installation
When I decided to install a knock sensor relocation bracket on my 1999-2007 GMC, I quickly realized that choosing the right bracket and understanding the installation process is key to a successful upgrade. Here’s my detailed buying guide based on my experience, which I hope will help you make informed decisions and get your installation done smoothly.
Why Consider a Knock Sensor Relocation Bracket?
I found that relocating the knock sensor helps improve the accuracy of readings, especially if you’re upgrading your engine components or modifying the intake manifold. The stock location can sometimes give readings due to heat or vibration, so a relocation bracket can help prevent engine knock and improve performance.
Compatibility: Make Sure It Fits Your Model
Since I own a GMC model from 1999 to 2007, I needed to ensure the bracket was specifically designed for my engine type. Most brackets are made for the 4.8L, 5.3L, and 6.0L V8 engines common in this range. I checked the product description carefully and confirmed the bracket was compatible with my truck’s year and engine code before buying.
Material Quality and Durability
The bracket I chose was made of high-grade aluminum, which I preferred because it’s lightweight yet strong and resistant to corrosion. Avoid cheap stamped steel brackets that might bend or rust over time. Good material quality ensures the bracket holds the sensor securely and lasts through heat cycles and engine vibrations.
Included Hardware and Instructions
I made sure the kit came with all necessary hardware — bolts, washers, and any spacers needed for installation. Some brackets come with detailed installation guides or links to video tutorials, which I found very helpful since the sensor location is a bit tight to access. Having clear instructions saved me time and frustration.
Ease of Installation
For me, ease of installation was crucial. I looked for brackets that didn’t require major engine disassembly. Some designs allow you to relocate the knock sensor with minimal tools and without removing the intake manifold, which was a big plus. I recommend checking reviews to see if others found the bracket easy to install.
Price vs. Value
While I didn’t want to overspend, I avoided the cheapest options because they often lacked durability or came without hardware. I balanced price with quality and customer feedback. Spending a little more upfront ensured I didn’t have to replace the bracket again soon or deal with sensor errors.
Where to Buy
I found reliable brackets from specialized automotive parts retailers and online stores like Summit Racing and RockAuto. OEM or OEM-style parts from reputable brands gave me peace of mind. Also, forums and GMC enthusiast groups helped me identify the best products based on real user experiences.
Final Tips from My Experience
- Double-check your knock sensor’s connector and wiring for wear before relocating.
- Keep track of all bolts and hardware during removal.
- Take your time to torque bolts to manufacturer specs to avoid sensor damage.
- Test the engine after installation to ensure no check engine lights or knock codes appear.
I hope my buying guide helps you choose the right knock sensor relocation bracket and makes your installation smoother. It’s a worthwhile upgrade that can improve your GMC’s engine performance and reliability!
Author Profile
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Kenneth Dizon is the voice behind CrossFitsawmill.com. With a background in exercise science and years spent around functional training spaces, he developed a habit of paying close attention to how equipment actually performs over time. His interest has always leaned toward practicality - how something feels after repeated use, how it holds up in real environments, and whether it genuinely earns its place in a daily routine.
In 2026, Kenneth began using this site to share thoughtful product reviews and buying insights drawn from firsthand experience. Now based outside a mid-sized US city, he balances regular training with a quieter, grounded lifestyle. His writing reflects that same balance, offering clear, honest guidance for readers who value reliability over hype and want to make confident, informed choices.
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