Add FSD to a GMC Sierra 1500? Here's what works
Tesla's FSD stays on Teslas. But your Sierra 1500 can steer itself and follow traffic with one device plugged in behind the mirror.
Yes. Your Sierra 1500 is on comma's list.
comma lists the 2020–2021 Sierra 1500. It needs Driver Alert Package II on the car. The car's own adaptive cruise keeps speed control; an early openpilot option exists. Steering help starts above 6 mph.
Steers itself in the lane
Continuous centring on highways and most roads, not a nudge back from the line.
Follows the car ahead
Your car's adaptive cruise keeps doing the gas and brakes while openpilot steers.
You stay in charge
A driver camera checks your eyes. No city turns, no naps, no FSD claims.
How to add it to your Sierra 1500
Four steps. No wiring cut, no dealer visit.
- 1
Confirm your year and trim
Open your exact Sierra 1500 below. Trim names decide whether the car has the cruise and camera openpilot needs.
- 2
Order the comma four with the GM connector
Pick your car in comma's shop and the right harness is added. Nothing else is required.
- 3
Mount it behind the mirror
Stick the mount high and centred, plug the harness in at the camera, and route one cable. About fifteen minutes.
- 4
Drive a few minutes, then engage
It calibrates on your first drive. Then press your cruise button and the Sierra 1500 takes the lane.
What the first drive is like
Every Sierra 1500 comma lists
Open your year for the exact trim, harness, and what controls speed.
Super Cruise versus openpilot
Super Cruise works hands-free on mapped highways on the trims that have it. openpilot adds lane centring to Sierras that skipped it.
GMC owner guides
Plain summaries of the community guides for GMC cars.
Questions Sierra 1500 owners ask
Is this Tesla FSD for a Sierra 1500?
No. FSD is Tesla software for Tesla cars. This is openpilot, an open-source driver-assist system that steers and follows traffic on your Sierra 1500. You watch the road and stay responsible.
Which GMC Sierra 1500 years work?
comma lists the 2020–2021 Sierra 1500, with Driver Alert Package II. Open the exact year below to confirm your trim.
Do I keep Super Cruise?
Yes. The harness sits between the car and its camera, and your factory safety features keep working. Unplug it and the car is stock again.
Does it handle stop-and-go traffic?
It slows and stops behind traffic. On this Sierra 1500 you tap resume to move off again.
Is there a subscription?
No. The device and the software are a one-time purchase. comma prime is an optional extra for remote access and longer drive storage.
Do I need to keep my hands on the wheel?
Not constantly. A small camera watches that your eyes stay on the road, and openpilot warns you and stops steering if they do not.
Other GMC models
Every GMC on the list Photo: comma.ai. Years and trims come from comma's official supported-cars table for stock openpilot. FSD is a Tesla trademark; openpilot is separate open-source software. CommaGuide is an independent guide and earns a referral credit on some orders.