2021 GMC Sierra Ignition Relays, Sensors & Switches
Select Your Submodel
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TRQ® - Ignition Knock Sensor$29.93 + Save an extra $1.80 with iD FastTrack -
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ACDelco® - GM Original Equipment™ Ignition Knock Sensor$5.01 - $26.10 -
Dorman® - OE Solutions™ Ignition Knock Sensor$37.17 - $47.42 -
- Walker Products® - Ignition Knock Sensor$18.92 - $19.32
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- ACDelco® - GM Genuine Parts™ Ignition Switch$27.54 - $36.01 + Save an extra $2.00 with iD FastTrack
- Standard® - Ignition Switch$39.51 + Save an extra $2.40 with iD FastTrack
