OYEAUTO Knock Sensor with Harness 12601822/12589867 — Direct‑Replacement for Chevy/GMC/Cadillac V8s, Corrosion‑Resistant OEM Fit

OYEAUTO Knock Sensor with Harness 12601822 / 12589867 is a direct-replacement engine knock sensor kit built to restore proper vibration detection and signal routing for compatible Chevy, GMC and Cadillac V8 engines.

This kit pairs a calibrated knock sensor with a corrosion-resistant wiring harness designed to fit a range of GM small- and big-block V8 engines from the late 1990s through the mid-2000s. It sends calibrated vibration signals to the engine control unit (ECU) so the computer can adjust ignition timing and protect the engine from pre-ignition events. The part is produced to meet or exceed OEM specifications and ships with a 12‑month warranty.

Which vehicles and engines will this sensor kit fit?

This OYEAUTO assembly fits many GM models and specific RPO engine codes. It supports several Chevrolet, GMC and Cadillac vehicles equipped with 4.8L, 5.3L, 5.7L and 6.0L engines produced in model years roughly 1999–2007. Always verify fit by comparing the existing sensor to the product image or checking your vehicle details.

• Typical fit: Silverado, Sierra, Tahoe, Yukon, Suburban, Avalanche and select HD variants.
• Engine RPO codes: LS1, LM7, LR4, LQ4, LS6, L59, LQ9, LM4, L33.
• Model years commonly covered: 1999–2007 (see product listing for exact ranges).
• Cross-reference OEM numbers like 12589867, 12601822 before purchase.

How does the knock sensor and harness affect engine performance?

The knock sensor monitors block vibrations and converts them into an electrical signal for the ECU. If the sensor or harness is faulty, the ECU may retard timing unnecessarily or fail to react to knock, potentially triggering limp modes or check-engine lights. Replacing a worn sensor restores accurate detection and consistent ignition control.

• Detects engine block vibration and sends signals to the ECU.
• Helps the ECU optimize ignition timing under knock conditions.
• Prevents misinterpretation that can lead to reduced power or error codes.
• Includes a harness that resists corrosion for reliable signal transmission.

What are the build quality and warranty details?

OYEAUTO designs this knock sensor and harness to match OEM fit and function while using materials that resist environmental wear and corrosion. The kit undergoes fit and function testing to meet or exceed factory standards. A 12‑month warranty covers defects, with replacement or refund options through the seller.

• Manufactured to OEM-equivalent specifications for fit and signal output.
• Wiring harness uses corrosion-resistant materials to extend lifespan.
• 12-month warranty with seller support for defects or failures.
• Compare part numbers (e.g., 12589867) and the pictured sensor before ordering.

How do I confirm this is the correct replacement for my car?

Confirm compatibility by matching the part to the existing sensor on your engine or checking the vehicle's year, make and model through an online fitment tool. The product page lists multiple OEM cross-references—compare those numbers against your original part. If in doubt, inspect the connector and mounting location visually.

• Compare OEM numbers: 12589867, 12601822 and others listed.
• Visually match the sensor shape, harness connector and mounting stud.
• Use vehicle fitment lookup (by VIN or year/make/model) for confirmation.
• Contact seller with pictures if you need compatibility help.

Who is this for: This OYEAUTO knock sensor with harness is intended for DIY enthusiasts, mechanics and fleet owners working on late‑1990s to mid‑2000s GM trucks and SUVs who need a reliable, OEM-style replacement. It suits vehicles showing knock-related fault codes, irregular ignition timing responses, or owners replacing old sensors preventively to maintain engine performance and avoid potential damage.