Where is the knock sensor located on a 2001 Chevy 6.0 liter engine in silverado 2500 hd 4 wheel drive?

The knock sensor on a 2001 Chevy Silverado 2500HD 6.0L engine is typically located on the passenger side (right side) of the engine block, near the front. It's often near the distributor (if equipped, some years had different ignition systems) or the oil filter. It's a small, threaded sensor.

However, precise location can vary slightly depending on the specific engine configuration. It's best to consult a repair manual specific to your vehicle's year and engine (the exact VIN would be ideal for accuracy). A repair manual will provide a diagram showing the exact placement. You can usually find these online or at auto parts stores.

Visually inspecting the engine block in the area described above, while referring to a diagram from a repair manual, is the most reliable way to locate it.