Knock Sensors: Installation

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

To install, reverse removal procedure. Tighten fasteners/fittings to specification. See TORQUE SPECIFICATIONS . After reassembly is complete, on models that fuel lines were loosened or disconnected for knock sensor access, turn ignition switch to ON position for 2 seconds. Turn ignition switch to OFF position for 10 seconds. Turn ignition switch to ON position. Check for fuel leaks. Repair as necessary.

Fig 1: Locating Fuel Line Fittings & Fuel Line Bracket (4.3L)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Removing Knock Sensor (4.3L)

Courtesy of GENERAL MOTORS CORP.