you have to remove the intake, and there are 2 knock sensors.
The 4.8, 5.3 and the 6.0 GM engines require removing the intake manifold to replace a knock sensor.
2003 chevy tahoe knock sensor
under the air intake plemumn
There is 2 of them on that engine and there underneith the intake manifold. You can't see them are even get to them until the intake is removed.
The 2001 Chevrolet Suburban is equipped with one knock sensor. The knock sensor will be attached to the back of the engine.
The knock sensor is on the passenger side of the motor along the top of the oil pan about half way on the block.
Trouble code P0330 means: Knock Sensor 2 Circuit (Bank 2) Replace the knock sensor
location of knock sensor in 1997 cheverolet Tahoe SUV 305 or 350 engine
The knock sensor, in your 1997 Chevrolet Lumina, can be found on the front of the engine. The knock sensor is near the top of the engine.
how do I disconnect the Electrical connection on knock sensor
There is 2 of them and they are underneath the intake manifold. You will have to remove the intake manifold to replace them are even see them.
Under the intake