p0327
Moderate
Chevrolet · Trucks
Knock Sensor 1 Circuit Low Input (Bank 1)
Quick Answer
Error code P0327 on your Chevrolet Trucks 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
CK15706Colorado LT 2024Colorado Trail Boss 2024Colorado WT 2024Colorado Z71 2024Colorado ZR2 2024Silverado 1500 Custom 2024Silverado 1500 High Country 2024Silverado 1500 LT 2024Silverado 1500 LT Trail Boss 2024Silverado 1500 LTZ 2024Silverado 1500 RST 2024Silverado 1500 WT 2024Silverado 1500 ZR2 2024Silverado 2500HD High Country 2024Silverado 2500HD LT 2024Silverado 2500HD LTZ 2024Silverado 2500HD WT 2024CL14543CS10403CK10743CK10543CK20943CK30943CK10906
Likely Causes
How to Fix It
1
Remove components necessary to access knock sensor 1 under the intake manifold
2
Inspect the wiring harness running from the knock sensor to the ECM for damage
3
Verify the knock sensor is properly torqued to the engine block
4
Measure knock sensor 1 resistance and compare against specification
5
Replace the knock sensor and harness assembly as needed
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
Mounting bolt
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