Beta testers wanted: I built a range app for the Sierra EV / Silverado EV screen that actually learns your truck.
You know that range number on the dash that swings 40 miles the second you hit a hill or a cold morning? I got tired of guessing, so I built something better.
EV Control Center is an Android Automotive app that runs right on the truck's own center screen, and it gets smarter with every mile you drive. I'm opening a small beta for Ultium owners and I'd love for you to be part of it.
A range number you can finally trust
It learns from your drives. After every drive it compares what the battery really used against what it predicted, then tunes itself to your truck: efficiency at each speed, the cost of climbing, what regen gives back downhill, and how much climate and electronics draw at each outside temperature. After about 30 miles it switches over to what it learned.
It knows the terrain. A run up the mountain and a cruise across the flats are never averaged into one meaningless number.
It knows how you drive. The baseline comes from your last 300 miles, weighted toward recent driving. Highway habits, a heavy right foot or a mostly-city week all show up.
Real roads, not a circle. The map shades where you can actually reach by road, hills included (powered by HERE). View it as One way, True round trip (going up costs more than coming down), or To empty. A compass rose shows which direction takes you farthest and which is shortest, like downhill toward Phoenix vs. up toward Flagstaff.
Check the route before you leave. Tap a destination or charger and see miles and kWh each way, battery % on arrival and back home, and headwind or tailwind. You get a plain verdict: make it there and back, charge first, or charge on the way, with a DC fast charger suggested if you're short.
Your reserve, your call. Pick your own buffer (default 20%). GM's number sits right beside ours so you can compare.
Towing mode. Enter a trailer weight and the range adjusts. Towing drives stay out of your normal average.
It shows its homework. The Energy Lab screen reveals what it learned (speed curve, hills, climate) and how far off each past prediction was. Judge for yourself whether to trust it.
And that's just the start
Live energy: power in/out with a smooth 5/15/60-minute graph, regen recovered, accessory load, and efficiency over the last ¼ mi, 1 mi and 5 mi.
Trips and charging history: every drive and charge recorded automatically, with maps colored by efficiency, charge curves you can scrub through, and day, week and month summaries.
Driving feedback: a G-meter, an eco-driving score per drive, and counts of hard acceleration, braking and cornering.
Chargers on the map, with whether you can reach each one by road.
Diagnostics in plain English: what your truck exposes to apps, what GM locks, and why.
Built for the truck: works on both the portrait Sierra and landscape Silverado screens, with big touch targets. While driving, it only hides what the truck itself restricts.
Private by design: your trips, location and data stay on the truck. No analytics, no ads. Online features (weather, road reach) stay off until you turn them on.
Built-in feedback button: see something off, want a feature, or hit a bug? Tap the feedback button inside the app and it goes straight to me. No forms, no forums, no waiting. Your input shapes what gets built next.
The honest fine print
It's a personal project, not affiliated with GM. It only reads vehicle data and never changes a setting.
GM keeps some data locked away from third-party apps (odometer, tire pressure, HVAC and cameras), so those aren't in it.
I test it daily on a Sierra EV Denali. Silverado EV and other Ultium trucks should work, and that's exactly why I need you.
It's distributed through Google Play internal testing, so you'll need the Google account you're signed in with on the truck.
How to join
Fill out this short form: https://forms.gle/JSG9Bk4u1NoF7wBv6
I'll add you to the tester list.
Install it from the truck's Play Store (search com.amueller.evcontrol).
Spots are limited, so I'm keeping this group small. I'm happy to answer questions in the comments, especially from anyone who's done a long mountain trip and wants to compare notes on range.