p0327
Moderate
Chevrolet · SUVs
Knock Sensor 1 Circuit Low Input (Bank 1)
Quick Answer
Error code P0327 on your Chevrolet SUVs means: Knock Sensor 1 Circuit Low Input (Bank 1). This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
CL14636CL14606Blazer LT 2024Blazer Premier 2024Blazer RS 2024Equinox Activ 2024Equinox LT 2024Equinox RS 2024Suburban High Country 2024Suburban LS 2024Suburban LT 2024Suburban Premier 2024Suburban RST 2024Tahoe High Country 2024Tahoe LS 2024Tahoe LT 2024Tahoe Premier 2024Tahoe RST 2024Tahoe Z71 2024Trailblazer Activ 2024Trailblazer LS 2024Trailblazer LT 2024Trailblazer RS 2024Traverse LS 2024Traverse LT 2024Traverse Premier 2024Traverse RS 2024Traverse Z71 2024Trax Activ 2024Trax LS 2024Trax LT 2024Trax RS 2024CL14526CL14506CK10906CK10706CL14456CL14806CL14416
Likely Causes
How to Fix It
1
Gain access to knock sensor 1 located beneath the intake manifold on bank 1
2
Inspect the knock sensor wiring harness for chafing, corrosion, or breaks
3
Verify the knock sensor mounting bolt is torqued to specification (typically 15 ft-lbs)
4
Measure knock sensor resistance and compare to manufacturer specification
5
Replace the knock sensor and harness if out of specification or visibly damaged
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Knock sensor 1
Knock sensor wiring harness
Intake manifold gasket set
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