How to replace knock sensor on 2004 Chevy Tahoe 5.3
2004 Chevrolet LS 5.3
Engine light came on over the weekend. Had code checked at local parts store and ID'ed knock sensorb #2 had low voltage. Fuel pump is new, no engine rattle so sensor is most likly defective. Where is this sensor located? Is it difficult to locate and change? Tips/tricks?
Intake Manifold Replacement Removal Procedure
Important: The intake manifold, throttle body, fuel rail, and injectors may be removed as an assembly. If not servicing the individual components, remove the manifold as a complete assembly.
Notice: Refer to Fastener Notice in the Preface section.
Tighten Tighten the bolt to 10 N·m (89 lb in).
Important: Lightly coat the MAP sensor seal with clean engine oil before installing.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten Tighten the sensor to 20 N·m (15 lb ft).
GM Mark of Excellence/ Service Guild Participant with 13 years experience, ASE Master Certified