Standard Ignition Door Remote Mirror Switch P/N:MRS21
Take back easy control of your power mirrors with the Standard Ignition Remote Mirror Switch, MPN MRS164. This door remote mirror switch is a direct-fit replacement for many vehicles, among them the 2015-2019 Chevrolet Silverado 1500, 2015-2019 GMC Sierra 1500 and 2015-2018 Chevrolet Silverado 2500; see the "Vehicles it fits" section for the full list.
The remote mirror switch sends power to the mirror motors, so you can choose a mirror and adjust its aim from inside the vehicle. Signs this part may need replacing include power mirrors that don't respond, move in only some directions, or work intermittently. A blown fuse, damaged wiring, or a failed mirror motor can cause the same symptoms, so diagnose the cause before replacing the switch.
Interchange: RMS164 · PA3959 · 23488412 · 84537076
This part cross-references / interchanges with the following part numbers:
What does the Standard Ignition MRS164 remote mirror switch do?
It sends power to the mirror motors, so you can select a power mirror and adjust its position from inside the vehicle.
Which vehicles does the MRS164 fit?
It fits many vehicles, among them the 2015-2019 Chevrolet Silverado 1500, 2015-2019 GMC Sierra 1500 and 2015-2018 Chevrolet Silverado 2500. See the "Vehicles it fits" section for the full list.
What are signs the mirror switch may need replacing?
Signs include mirrors that don't respond, move in only some directions, or work intermittently. A fuse, wiring, or mirror motor can cause the same symptoms, so diagnose the cause before replacing the switch.
Which part numbers does the MRS164 interchange with?
It interchanges with RMS164, PA3959, 23488412 and 84537076.
What conductors does this switch use?
Standard Ignition uses copper alloy conductors, which provide superior electrical conductivity with low resistive losses.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.