GMC Sierra 1500 Automatic Transmission Parts
This page brings together automatic transmission parts for the GMC Sierra 1500, covering model years 1999–2022. The range includes shift interlock solenoids, wiring harnesses, and shift levers, with OE replacement and kit options available. Select your year above and we'll show only the automatic transmission parts that fit your GMC Sierra 1500. Fitment is checked against our vehicle data for every part listed.
What's here for your GMC Sierra 1500
- Shift interlock solenoids — OE-replacement units for restoring proper gear selector operation
- Automatic transmission wiring harnesses — replacement harness assemblies and kits designed for direct-fit installation
- Automatic transmission shift levers — replacement lever assemblies for the gear selector
The widest selection here comes from ATP, Dorman, ACDelco, and B&M, spanning OE replacement parts and performance-oriented components across the 1999–2022 Sierra 1500 range. Other categories GMC Sierra 1500 owners shop for: GMC Sierra 1500 Shocks and Struts, GMC Sierra 1500 Springs and Suspension Parts and GMC Sierra 1500 Exterior Lights, or browse all GMC Sierra 1500 parts and accessories.