Gledewen Dual Knock Sensor Kit for GM 4.8L/5.3L/6.0L — 2 Sensors, Wiring Harness & Intake Manifold Gaskets

Gledewen’s Dual Knock Sensor kit bundles two OE-style knock sensors, a dedicated wiring harness, and two intake manifold gaskets to restore accurate detonation detection and seal integrity on GM 4.8L/5.3L/6.0L engines.

If your Chevrolet, GMC, Cadillac or Hummer with an LS-series small-block is showing knock-related trouble codes, reduced performance, or oil-soaked manifold seals, this complete replacement kit is engineered to match factory fit and electrical behavior while replacing worn gasket material. The kit includes two sensors, a custom harness built with tin-plated and solid brass terminals for reliable conductivity, and rubber intake manifold gaskets designed for a long service life. Every sensor is vibration-tested to simulate harsh operating conditions and the package comes with a 12-month warranty.

How will these knock sensors improve engine performance?

Fresh, correctly wired knock sensors let your engine control module (ECM) detect engine detonation more reliably so timing adjustments are accurate and misfires or timing retard are minimized. That can help restore drivability and fuel trim behavior when worn sensors were sending intermittent or weak signals.

• Dual sensors cover both banks on V8 LS engines for balanced detection.
• Harness with solid brass terminals reduces resistance and signal loss.
• Direct-fit replacement reduces installation time and wiring modifications.

Will these parts fit my Silverado, Sierra, Tahoe or Yukon?

The kit is designed for GM 4.8L, 5.3L and 6.0L applications across many model years, offering a broad direct-fit coverage so you can replace sensors and manifold gaskets in a single service. Always verify compatibility by cross-referencing your vehicle year, engine and OEM part numbers against the list provided.

• Common fits: 1999–2006 Chevy Silverado 1500, 1999–2004 Silverado 2500, 2000–2005 Suburban 1500, 2000–2007 Tahoe/Suburban 2500.
• Also fits many GMC Sierra, Yukon, Cadillac and Hummer models with LS-series engines.
• Replaces OE numbers such as 12601822, 213-3521 and 89060413 for cross-checking.

What’s included and what materials ensure durability?

The kit contains two knock sensors, a purpose-made sensor wiring harness and two intake manifold gasket sets so you can repair both detection and sealing issues in one job. Components use materials and construction aimed at longevity under engine heat and vibration.

• Sensors: accelerometer-tested units for durability under vibration.
• Harness: tin-plated and solid brass terminals for improved conductivity.
• Gaskets: high-quality rubber intended to resist oil and heat for extended service life.

How easy is installation and what should I watch for?

Installation is straightforward for anyone comfortable with basic engine service: remove the old sensors, replace the manifold gaskets, and plug the new harness into the factory connectors. Take care to torque sensor bolts to spec and route the harness away from hot exhaust components for long-term reliability.

• Includes all parts needed: 2 sensors, 1 harness, 2 gasket sets.
• Follow factory torque specs and connector engagement until secure.
• Inspect mating surfaces and clean before installing new gaskets.

Who is this for? If you own a GM truck or SUV powered by the LS-series 4.8L/5.3L/6.0L engines and are facing knock codes, poor drivability, or leaking intake seals, this Gledewen kit is aimed at owners and professional technicians wanting a reliable, direct-replacement solution. It consolidates sensors, wiring and gaskets into a single service package to simplify repairs and reduce the chance of future sensor or seal-related faults. For exact fit confirmation, compare the listed replacement numbers with your vehicle’s OE part references before purchase.