OYEAUTO Knock Sensor with Harness for GM V8 1999-2007 — Direct-Fit OE-Style

OYEAUTO knock sensor with harness (12601822 / 12589867) is a direct-fit replacement sensor and wiring kit that detects engine knock and sends the signal to your vehicle's ECU for proper timing control.

This OE-style knock sensor and harness kit is designed for late‑90s to mid‑2000s GM V8 vehicles, including Silverado, Sierra, Tahoe, Yukon, Suburban, Avalanche, and select Cadillac, Hummer, and Isuzu models. Built to match original electrical characteristics and mounting points, the kit helps restore accurate knock detection after a faulty sensor or damaged harness causes check-engine lights or timing issues.

Which vehicles and engines is this sensor compatible with?

The OYEAUTO kit fits many GM RPO engine codes and common V8 displacements from 1999 through 2007. Double-check your vehicle's year, engine RPO code, and connector style before ordering to ensure exact compatibility.

• Engine RPOs: LS1, LM7, LR4, LQ4, LS6, L59, LQ9, LM4, L33
• Engine sizes: 4.8L, 5.3L, 5.7L, 6.0L
• Selected fitments: 1999–2006 Chevy Silverado 1500, 2001–2006 Silverado HD, 1999–2004 Silverado 2500, 2000–2005 Suburban 1500, 2000–2007 Tahoe/Suburban 2500/Tahoe, 2002–2006 Avalanche, 1999–2006 GMC Sierra and Yukon models
• Also used in select Cadillac, Hummer, and Isuzu applications—confirm with OEM part comparison

How does this kit restore engine performance and warning lights?

The knock sensor detects vibration from pre-ignition and other abnormal combustion events and converts those vibrations to an electrical signal for the ECU. Replacing a failing sensor or corroded harness returns accurate knock monitoring, which helps the engine control module make correct timing adjustments.

• Converts engine block vibration into ECU signals for timing control
• Direct-fit connector and mounting for OEM-style installation
• Restores proper knock detection to help eliminate knock-related fault codes

What are the key quality and warranty details?

OYEAUTO manufactures this sensor and harness to meet or exceed OEM electrical and corrosion resistance standards. Materials and connectors are selected to withstand engine-bay heat and contaminants so the kit remains reliable over time.

• Tested for fit and function to match OEM performance
• Corrosion-resistant wiring and secure terminals for long service life
• 12-month warranty: replacement or refund available through the seller if defects occur

How do I confirm I’m ordering the correct part?

Compare the sensor and harness assembly you have to the photos and part numbers, and verify OE references where possible. Use your vehicle’s VIN or OEM part lookup to match numbers listed with the kit to avoid fitment mistakes.

• Check OE references: includes numbers like 12589867 and 12601822 among related cross-refs
• Match connector type, mounting hole, and harness length visually before purchase
• If unsure, verify year/make/model fitment or consult dealer parts with your VIN

Who is this for: This OYEAUTO knock sensor and harness kit is intended for owners, mechanics, and restoration shops servicing GM V8 trucks and SUVs from the 1999–2007 era who need a reliable, direct-fit replacement. It suits drivers addressing knock-related trouble codes, timing concerns, or a damaged sensor harness who want an OEM-like part backed by a 12-month seller warranty.