2002 Chevy Tahoe knock sensor

2002 CHEVROLET TAHOE
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JRCRAWFORD
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Engine Performance problem
2002 Chevy Tahoe V8 Two Wheel Drive Automatic

code reader sent a message that the no. 2 knock sensor needed to be replaced. how important is it the that be replaced,and how do we as shade tree mech go about replacing it ?
Mar 26, 2009 at 5:23 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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