TechSmart J72001 Ignition Knock (Detonation) Sensor Harness

Name: TechSmart J72001 Ignition Knock (Detonation) Sensor Harness
Brand: TechSmart
SKU: FDHX-J72001
Price: 36.15 USD
Availability: OutOfStock

⚙️ 236 vehicles fit this part

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✅OE Direct Replacement — Bolt-on fit, no modifications needed

🚗Fitment: Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, and Pontiac, Ascender, Avalanche 1500, Avalanche 2500, Camaro, Corvette, CTS, Envoy, Envoy XL, Envoy XUV, Escalade, Escalade ESV, Escalade EXT, Express 1500, Express 2500, Express 3500, Firebird, GTO, H2, Rainier, Savana 1500, Savana 2500, Savana 3500, Sierra 1500, Sierra 1500 HD, Sierra 1500 HD Classic, Sierra 2500, Sierra 2500 HD, Sierra 2500 HD Classic, Sierra 3500, Sierra 3500 Classic, Sierra 3500 HD, Silverado 1500, Silverado 1500 HD, Silverado 1500 HD Classic, Silverado 2500, Silverado 2500 HD, Silverado 2500 HD Classic, Silverado 3500, Silverado 3500 Classic, Silverado 3500 HD, SSR, Suburban 1500, Suburban 2500, Tahoe, Trailblazer EXT, Yukon, Yukon XL 1500, and Yukon XL 2500

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Not what you need? Click here for all Ignition Knock (Detonation) Sensor Harness options

Reliable Ignition Knock Sensor Harness for GM and Related Vehicles

The TechSmart J72001 Ignition Knock (Detonation) Sensor Harness is designed to provide a secure and accurate connection for your vehicle's knock sensor system. Engineered for compatibility with a wide range of Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, and Pontiac models, this harness ensures proper sensor communication to maintain optimal engine performance.

Key Features of the TechSmart J72001 Harness

Direct replacement ignition knock sensor harness for precise fitment
Compatible with multiple GM and related vehicle models including Silverado, Escalade, Tahoe, and more
Durable wiring and connectors designed to withstand engine bay conditions
Ensures accurate knock sensor signal transmission to the engine control unit
Part number J72001 for easy identification and ordering

Detailed Product Description

The TechSmart J72001 Ignition Knock Sensor Harness is a critical component for vehicles equipped with knock sensors that monitor engine detonation. This harness connects the knock sensor to the engine control module, allowing the system to detect and adjust ignition timing to prevent engine damage. Compatible with a broad range of models such as the Chevrolet Silverado 1500, GMC Sierra 2500 HD, Cadillac Escalade, and Pontiac GTO, this harness is manufactured to meet OEM specifications for fit and function. Its robust construction ensures reliable performance under high temperatures and vibration typical of engine compartments.

Common Applications and Issues Addressed

Restores proper knock sensor signal transmission to prevent engine misfires
Eliminates check engine light codes related to knock sensor circuit faults
Prevents engine knocking and pinging by enabling accurate ignition timing adjustments
Resolves intermittent sensor connection issues caused by damaged or worn harnesses
Supports engine performance and fuel efficiency by maintaining sensor integrity

Installation Notes and Tips

When installing the TechSmart J72001 harness, ensure the vehicle is turned off and the battery is disconnected to avoid electrical shorts. Carefully route the harness along the original wiring path to prevent exposure to excessive heat or moving parts. Verify all connectors are fully seated and secure to maintain a stable connection. Refer to the vehicle’s service manual for specific knock sensor location and wiring diagrams for Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, and Pontiac models.

Quality Assurance and Warranty Information

TechSmart manufactures the J72001 Ignition Knock Sensor Harness to meet stringent quality standards, ensuring durability and reliable performance. While specific warranty details are not provided, TechSmart products typically undergo rigorous testing to comply with industry requirements. For peace of mind, confirm warranty coverage with the point of purchase or manufacturer documentation.

This part fits 236 vehicles. Search below:

Year	Make	Model	Liters	Cylinders	Position
2008	Chevrolet	Silverado 3500 HD	6.0L	V8	N/A
2007	Chevrolet	Express 1500	5.3L	V8	N/A
2007	Chevrolet	Express 2500	4.8L	V8	N/A
2007	Chevrolet	Express 2500	6.0L	V8	N/A
2007	Chevrolet	Express 3500	4.8L	V8	N/A
2007	Chevrolet	Express 3500	6.0L	V8	N/A
2007	Chevrolet	Silverado 1500			N/A
2007	Chevrolet	Silverado 1500 HD Classic			N/A
2007	Chevrolet	Silverado 2500 HD			N/A
2007	Chevrolet	Silverado 2500 HD Classic			N/A
2007	Chevrolet	Silverado 3500 Classic	6.0L	V8	N/A
2007	Chevrolet	Silverado 3500 HD	6.0L	V8	N/A
2007	GMC	Savana 1500	5.3L	V8	N/A
2007	GMC	Savana 2500	4.8L	V8	N/A
2007	GMC	Savana 2500	6.0L	V8	N/A
2007	GMC	Savana 3500	4.8L	V8	N/A
2007	GMC	Savana 3500	6.0L	V8	N/A
2007	GMC	Sierra 1500			N/A
2007	GMC	Sierra 1500 HD Classic			N/A
2007	GMC	Sierra 2500 HD			N/A
2007	GMC	Sierra 2500 HD Classic	6.0L	V8	N/A
2007	GMC	Sierra 3500 Classic	6.0L	V8	N/A
2007	GMC	Sierra 3500 HD			N/A
2007	Hummer	H2	6.0L	V8	N/A
2006	Cadillac	Escalade			N/A
2006	Cadillac	Escalade ESV			N/A
2006	Cadillac	Escalade EXT			N/A
2006	Chevrolet	Avalanche 1500			N/A
2006	Chevrolet	Avalanche 2500			N/A
2006	Chevrolet	Express 1500	5.3L	V8	N/A
2006	Chevrolet	Express 2500	4.8L	V8	N/A
2006	Chevrolet	Express 2500	6.0L	V8	N/A
2006	Chevrolet	Express 3500	4.8L	V8	N/A
2006	Chevrolet	Express 3500	6.0L	V8	N/A
2006	Chevrolet	Silverado 1500			N/A
2006	Chevrolet	Silverado 1500 HD			N/A
2006	Chevrolet	Silverado 2500			N/A
2006	Chevrolet	Silverado 2500 HD			N/A
2006	Chevrolet	Silverado 3500			N/A
2006	Chevrolet	Suburban 1500	5.3L	V8	N/A
2006	Chevrolet	Suburban 2500			N/A
2006	Chevrolet	Tahoe			N/A
2006	GMC	Savana 1500	5.3L	V8	N/A
2006	GMC	Savana 2500	4.8L	V8	N/A
2006	GMC	Savana 2500	6.0L	V8	N/A
2006	GMC	Savana 3500	4.8L	V8	N/A
2006	GMC	Savana 3500	6.0L	V8	N/A
2006	GMC	Sierra 1500			N/A
2006	GMC	Sierra 1500 HD			N/A
2006	GMC	Sierra 2500 HD			N/A
2006	GMC	Sierra 3500			N/A
2006	GMC	Yukon			N/A
2006	GMC	Yukon XL 1500			N/A
2006	GMC	Yukon XL 2500			N/A
2006	Hummer	H2	6.0L	V8	N/A
2005	Cadillac	CTS	5.7L	V8	N/A
2005	Cadillac	Escalade			N/A
2005	Cadillac	Escalade ESV			N/A
2005	Cadillac	Escalade EXT			N/A
2005	Chevrolet	Avalanche 1500			N/A
2005	Chevrolet	Avalanche 2500			N/A
2005	Chevrolet	Express 1500	5.3L	V8	N/A
2005	Chevrolet	Express 2500	4.8L	V8	N/A
2005	Chevrolet	Express 2500	5.3L	V8	N/A
2005	Chevrolet	Express 2500	6.0L	V8	N/A
2005	Chevrolet	Express 3500	4.8L	V8	N/A
2005	Chevrolet	Express 3500	6.0L	V8	N/A
2005	Chevrolet	Silverado 1500			N/A
2005	Chevrolet	Silverado 1500 HD			N/A
2005	Chevrolet	Silverado 2500			N/A
2005	Chevrolet	Silverado 2500 HD			N/A
2005	Chevrolet	Silverado 3500			N/A
2005	Chevrolet	SSR			N/A
2005	Chevrolet	Suburban 1500	5.3L	V8	N/A
2005	Chevrolet	Suburban 2500			N/A
2005	Chevrolet	Tahoe			N/A
2005	Chevrolet	Trailblazer EXT	5.3L	V8	N/A
2005	GMC	Envoy	5.3L	V8	N/A
2005	GMC	Envoy XL	5.3L	V8	N/A
2005	GMC	Envoy XUV	5.3L	V8	N/A
2005	GMC	Savana 1500	5.3L	V8	N/A
2005	GMC	Savana 2500	4.8L	V8	N/A
2005	GMC	Savana 2500	5.3L	V8	N/A
2005	GMC	Savana 2500	6.0L	V8	N/A
2005	GMC	Savana 3500	4.8L	V8	N/A
2005	GMC	Savana 3500	6.0L	V8	N/A
2005	GMC	Sierra 1500			N/A
2005	GMC	Sierra 1500 HD			N/A
2005	GMC	Sierra 2500 HD			N/A
2005	GMC	Sierra 3500			N/A
2005	GMC	Yukon			N/A
2005	GMC	Yukon XL 1500			N/A
2005	GMC	Yukon XL 2500			N/A
2005	Hummer	H2	6.0L	V8	N/A
2005	Isuzu	Ascender	5.3L	V8	N/A
2004	Buick	Rainier	5.3L	V8	N/A
2004	Cadillac	CTS	5.7L	V8	N/A
2004	Cadillac	Escalade			N/A
2004	Cadillac	Escalade ESV			N/A
2004	Cadillac	Escalade EXT			N/A
2004	Chevrolet	Avalanche 1500			N/A
2004	Chevrolet	Avalanche 2500			N/A
2004	Chevrolet	Corvette			N/A
2004	Chevrolet	Express 1500	5.3L	V8	N/A
2004	Chevrolet	Express 2500	4.8L	V8	N/A
2004	Chevrolet	Express 2500	5.3L	V8	N/A
2004	Chevrolet	Express 2500	6.0L	V8	N/A
2004	Chevrolet	Express 3500	6.0L	V8	N/A
2004	Chevrolet	Silverado 1500			N/A
2004	Chevrolet	Silverado 2500			N/A
2004	Chevrolet	Silverado 2500 HD			N/A
2004	Chevrolet	Silverado 3500			N/A
2004	Chevrolet	SSR			N/A
2004	Chevrolet	Suburban 1500	5.3L	V8	N/A
2004	Chevrolet	Suburban 2500			N/A
2004	Chevrolet	Tahoe			N/A
2004	Chevrolet	Trailblazer EXT	5.3L	V8	N/A
2004	GMC	Envoy XL	5.3L	V8	N/A
2004	GMC	Envoy XUV	5.3L	V8	N/A
2004	GMC	Savana 1500	5.3L	V8	N/A
2004	GMC	Savana 2500	4.8L	V8	N/A
2004	GMC	Savana 2500	5.3L	V8	N/A
2004	GMC	Savana 2500	6.0L	V8	N/A
2004	GMC	Savana 3500	6.0L	V8	N/A
2004	GMC	Sierra 1500			N/A
2004	GMC	Sierra 2500			N/A
2004	GMC	Sierra 2500 HD			N/A
2004	GMC	Sierra 3500			N/A
2004	GMC	Yukon			N/A
2004	GMC	Yukon XL 1500			N/A
2004	GMC	Yukon XL 2500			N/A
2004	Hummer	H2	6.0L	V8	N/A
2004	Isuzu	Ascender			N/A
2004	Pontiac	GTO			N/A
2003	Cadillac	Escalade			N/A
2003	Cadillac	Escalade ESV			N/A
2003	Cadillac	Escalade EXT			N/A
2003	Chevrolet	Avalanche 1500			N/A
2003	Chevrolet	Avalanche 2500			N/A
2003	Chevrolet	Corvette			N/A
2003	Chevrolet	Express 1500	5.3L	V8	N/A
2003	Chevrolet	Express 2500	4.8L	V8	N/A
2003	Chevrolet	Express 2500	5.3L	V8	N/A
2003	Chevrolet	Express 2500	6.0L	V8	N/A
2003	Chevrolet	Express 3500	6.0L	V8	N/A
2003	Chevrolet	Silverado 1500			N/A
2003	Chevrolet	Silverado 1500 HD			N/A
2003	Chevrolet	Silverado 2500			N/A
2003	Chevrolet	Silverado 2500 HD			N/A
2003	Chevrolet	Silverado 3500			N/A
2003	Chevrolet	SSR			N/A
2003	Chevrolet	Suburban 1500	5.3L	V8	N/A
2003	Chevrolet	Suburban 2500			N/A
2003	Chevrolet	Tahoe			N/A
2003	Chevrolet	Trailblazer EXT	5.3L	V8	N/A
2003	GMC	Envoy XL	5.3L	V8	N/A
2003	GMC	Savana 1500	5.3L	V8	N/A
2003	GMC	Savana 2500	4.8L	V8	N/A
2003	GMC	Savana 2500	5.3L	V8	N/A
2003	GMC	Savana 2500	6.0L	V8	N/A
2003	GMC	Savana 3500	6.0L	V8	N/A
2003	GMC	Sierra 1500			N/A
2003	GMC	Sierra 1500 HD			N/A
2003	GMC	Sierra 2500			N/A
2003	GMC	Sierra 2500 HD			N/A
2003	GMC	Sierra 3500			N/A
2003	GMC	Yukon			N/A
2003	GMC	Yukon XL 1500			N/A
2003	GMC	Yukon XL 2500			N/A
2003	Hummer	H2	6.0L	V8	N/A
2003	Isuzu	Ascender	5.3L	V8	N/A
2002	Cadillac	Escalade			N/A
2002	Cadillac	Escalade EXT			N/A
2002	Chevrolet	Avalanche 1500			N/A
2002	Chevrolet	Avalanche 2500			N/A
2002	Chevrolet	Camaro	5.7L	V8	N/A
2002	Chevrolet	Corvette			N/A
2002	Chevrolet	Silverado 1500			N/A
2002	Chevrolet	Silverado 1500 HD			N/A
2002	Chevrolet	Silverado 2500			N/A
2002	Chevrolet	Silverado 2500 HD			N/A
2002	Chevrolet	Silverado 3500			N/A
2002	Chevrolet	Suburban 1500	5.3L	V8	N/A
2002	Chevrolet	Suburban 2500			N/A
2002	Chevrolet	Tahoe			N/A
2002	GMC	Sierra 1500			N/A
2002	GMC	Sierra 1500 HD			N/A
2002	GMC	Sierra 2500			N/A
2002	GMC	Sierra 2500 HD			N/A
2002	GMC	Sierra 3500			N/A
2002	GMC	Yukon			N/A
2002	GMC	Yukon XL 1500			N/A
2002	GMC	Yukon XL 2500			N/A
2002	Pontiac	Firebird	5.7L	V8	N/A
2001	Chevrolet	Camaro	5.7L	V8	N/A
2001	Chevrolet	Corvette			N/A
2001	Chevrolet	Silverado 1500			N/A
2001	Chevrolet	Silverado 1500 HD			N/A
2001	Chevrolet	Silverado 2500			N/A
2001	Chevrolet	Silverado 2500 HD			N/A
2001	Chevrolet	Silverado 3500			N/A
2001	Chevrolet	Suburban 1500	5.3L	V8	N/A
2001	Chevrolet	Suburban 2500			N/A
2001	Chevrolet	Tahoe			N/A
2001	GMC	Sierra 1500			N/A
2001	GMC	Sierra 1500 HD			N/A
2001	GMC	Sierra 2500			N/A
2001	GMC	Sierra 2500 HD			N/A
2001	GMC	Sierra 3500			N/A
2001	GMC	Yukon			N/A
2001	GMC	Yukon XL 1500			N/A
2001	GMC	Yukon XL 2500			N/A
2001	Pontiac	Firebird	5.7L	V8	N/A
2000	Chevrolet	Camaro	5.7L	V8	N/A
2000	Chevrolet	Corvette			N/A
2000	Chevrolet	Silverado 1500			N/A
2000	Chevrolet	Silverado 2500			N/A
2000	Chevrolet	Suburban 1500	5.3L	V8	N/A
2000	Chevrolet	Suburban 2500			N/A
2000	Chevrolet	Tahoe			N/A
2000	GMC	Sierra 1500			N/A
2000	GMC	Sierra 2500			N/A
2000	GMC	Yukon	4.8L	V8	N/A
2000	GMC	Yukon	5.3L	V8	N/A
2000	GMC	Yukon XL 1500			N/A
2000	GMC	Yukon XL 2500			N/A
2000	Pontiac	Firebird	5.7L	V8	N/A
1999	Chevrolet	Camaro	5.7L	V8	N/A
1999	Chevrolet	Corvette			N/A
1999	Chevrolet	Silverado 1500			N/A
1999	Chevrolet	Silverado 2500			N/A
1999	GMC	Sierra 1500			N/A
1999	GMC	Sierra 2500			N/A
1999	Pontiac	Firebird	5.7L	V8	N/A
1998	Chevrolet	Corvette			N/A
1998	Pontiac	Firebird	5.7L	V8	N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1257586914371P20697306778917-033JAC1076PTA1PTH1TRH102

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.