What GM's charging network includes and how to use it

General Motors operates OnStar Charging, a service that gives GM electric vehicle owners access to a network of public charging stations. The service is built into most new GM EVs and connects you to third-party charging networks rather than GM-owned chargers — the company doesn't operate its own charging stations. When you buy or lease a new GM EV, you typically get a period of free charging access through OnStar, though the length and coverage vary by model year and vehicle.

The charging network includes stations from providers like Electrify America, EVgo, and ChargePoint. You find and pay for charging through the OnStar app or through each network's own app. Some stations are free during your trial period; others charge per kilowatt-hour or per minute. After your free period ends, you pay the station operator's rate, which differs by location and time of day.

GM also sells home charging equipment and installation through its dealer network, though this is separate from the OnStar network service. A Level 2 home charger (the standard 240-volt unit) costs between $500 and $2,000 installed, depending on your electrical setup and local labor rates.

Key Takeaways

  • OnStar Charging connects your GM EV to public networks operated by Electrify America, EVgo, and ChargePoint, not to GM-owned chargers.
  • New GM EV purchases include a free trial period of charging access, but the length varies by model year and you should check your paperwork to see when yours ends.
  • After the trial period, you pay the charging network's rate per session, which changes by location and operator.
  • Home charging equipment is sold separately through GM dealers and requires professional installation if you don't already have a 240-volt outlet.

How long your free charging period lasts

GM's free charging offer changes by model year and sometimes by which EV you buy. Recent model years have offered between three and eight years of free charging through OnStar, but this is not may provide on all vehicles or all years. Your purchase agreement or lease paperwork should state exactly when your free period ends.

If you can't find the end date in your paperwork, call your GM dealer's service department or log into your OnStar account online — it will show your current charging status and any active promotions. Some dealers also send this information by email when you take delivery.

Once the free period ends, you can still use the same charging networks, but you'll pay per use. You can also cancel OnStar Charging and use individual network apps directly, which sometimes offers different pricing or membership plans.

Finding and using public charging stations

The OnStar app shows available chargers near you, their real-time availability, and whether they're included in your free trial. You can filter by charger type — Level 2 (slower, 240-volt) or DC fast charging (quicker, high-voltage). Tap a station to reserve it, though reservations typically hold for 15 to 30 minutes before releasing.

When you arrive at a charger, you can start charging through the OnStar app, the station's own app, or a physical card or RFID tag if the station supports it. Charging time depends on the charger type: Level 2 chargers add 25 to 30 miles of range per hour, while DC fast chargers add 150 to 200 miles in 20 to 30 minutes, though this slows as the battery fills.

If a charger is broken or unavailable, the app usually shows this within a few hours. Report problems directly through the app so the network operator can send a technician.

Home charging installation and costs

GM dealers sell Level 2 home chargers (also called wall-mounted chargers or EVSE units) and can arrange professional installation. The charger itself costs $300 to $800, and installation typically runs $200 to $1,200 depending on how far your electrical panel is from where you want the charger and whether your home's electrical service needs an upgrade.

Before buying, have an electrician inspect your home's electrical panel to see if it can handle a 240-volt circuit. Many homes built in the last 20 years have capacity, but older homes or those with large air conditioning units may need a panel upgrade, which costs $1,000 to $3,000 and is not something GM covers.

Some states and local utilities offer rebates for home charger installation — typically $300 to $1,000. Check your utility's website or contact them directly to see what's available in your area. The federal tax credit for home charging equipment (up to $500) is claimed on your tax return, not at the point of purchase.

What happens when your free charging ends

When your free trial period expires, OnStar Charging doesn't shut off — you straightforward start paying. The app will show you the per-session or per-kilowatt-hour rate for each charger before you plug in. You can choose to pay per use, or some networks offer monthly or annual memberships that lower the per-use cost if you charge frequently.

You're not locked into OnStar Charging after the trial ends. You can read individual network apps (Electrify America, EVgo, ChargePoint) and pay directly to those companies, which sometimes offer different pricing structures or loyalty programs. Many EV owners use multiple apps to find the cheapest option in their area.

Home charging remains the cheapest option long-term — charging overnight on a home Level 2 charger typically costs $3 to $5 per full charge, compared to $8 to $15 at public fast chargers.

Troubleshooting common charging problems

If the OnStar app won't connect to a charger, first check that your phone has a strong cellular signal and that the charger itself shows a green light or "available" status. Restart the app and try again. If the charger still won't respond, try the charger network's own app — sometimes a single charger has multiple apps that work with it.

If you're charged unexpectedly or see a charge you don't recognize, check your OnStar account history to see which charger and network processed it. Contact that network's customer service (the app usually has a help section with contact info) with your session details. Disputes are usually resolved within a few business days.

If your home charger isn't working, check that the circuit breaker for that outlet hasn't tripped. If it has, flip it back on. If it trips again when ready, stop using the charger and call a licensed electrician — this usually means a wiring problem. If the breaker stays on but the charger won't start, restart your vehicle and try again, then contact your GM dealer's service department.

Comparing GM charging to other EV brands' networks

Tesla operates its own Supercharger network, which is closed to non-Tesla vehicles in most of North America (though this is changing slowly). Tesla owners don't pay per use during ownership — charging is included. Ford and Volkswagen EVs use third-party networks like Electrify America and EVgo, similar to GM, and offer free trial periods comparable to GM's.

Hyundai and Kia offer their own charging apps and partnerships with networks, but the free trial lengths and coverage areas differ. If you're comparing EV brands, ask the dealer specifically how long the free charging period lasts and which networks are included — this varies enough that it's worth asking in writing so you have it in your paperwork.

The real difference between brands is usually not the network itself (most use the same chargers) but how long the free trial lasts and whether the home charger installation is included in the purchase price. GM typically includes the charger hardware but not installation; some competitors bundle installation as well.

Frequently Asked Questions

Can I use my GM EV to charge other electric vehicles?

No. Your GM EV's charging port is for charging your vehicle only. You cannot use it as a power source for other devices or vehicles. Some newer EVs have a feature called vehicle-to-home (V2H) or vehicle-to-load (V2L) that lets you power a home or device, but GM has not yet rolled this out on most models.

What if I move to a different state — does my OnStar Charging still work?

Yes. OnStar Charging works across the entire United States because it connects to national networks like Electrify America and EVgo. The chargers available and their pricing may differ by region, but your account and free trial period follow you.

Do I have to use OnStar Charging, or can I use other apps instead?

You don't have to use OnStar Charging. You can read Electrify America, EVgo, ChargePoint, or other apps directly and pay those companies. Many owners use multiple apps to compare prices and availability. Your free trial period is tied to OnStar, so you'd lose that benefit if you switch, but you're free to use other networks after the trial ends.

Is there a monthly fee for OnStar Charging after the free period?

No monthly fee. You pay per charging session at whatever rate the charger operator charges. Some operators offer optional memberships (like Electrify America's membership plan) that lower per-use costs, but these are optional and separate from OnStar.

Can I install a home charger myself, or do I need a professional?

You need a licensed electrician. Installing a 240-volt charger requires running new wiring from your electrical panel, which is a job that must meet local electrical codes. Doing it yourself is illegal in most places and voids your charger warranty. Have an electrician do the work and pull the required permit.