Starter Motor.
A device, power by electricity, pneumatic, or hydraulics, used to rotate / crank a vehicle's engine as to initiate the engine's operation under its own power.

Starter Motor

Fits Suburban (2015 - 2020)

5.3 liter. 5.3L. Sierra, Silverado; 5.3L. Suburban. Tahoe. Tahoe; 5.3L. Yukon XL. Yukon; 5.3L.
Starter Motor - Repair or Replace
You turn the key, hear a loud sharp CLICK, and your engine doesn't crank—sounds like your Chevrolet Suburban may need its starter replaced. If any of these symptoms sound familiar, contact our service department.