Factory diagram — Knock Sensor
Factory diagrams
GMC
Knock Sensor
UsedOEM
OEM GMC Knock Sensor part #12621820
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Close match — verify with VIN before checkout. VIN check beats regret.
Estimated Dispatch
Ships in 24–48 hours
$23.90
Specifications
SKU
FTM-CHARM-12621820
OEM Part #
12621820
Shipping Class
ground
Warranty
—