You’ve got a GM vehicle and you’re wondering if OnStar costs you anything. The answer isn’t a simple yes or no — it depends on your model year, which features you want, and whether your car’s hardware still works. Read on and you’ll know exactly where you stand.
The Short Answer: It Depends on When Your Car Was Built
OnStar isn’t entirely free, but it’s not entirely paid either. GM has split its connected services into a free baseline and a paid upgrade tier. The dividing line runs right through the 2025 model year.
Here’s the fast breakdown:
- 2025 and newer: You get 8 years of core features included at no extra cost
- 2018–2024: You got 10 years of basic diagnostics, but remote start and emergency services cost extra
- Pre-2018: Your car’s cellular hardware may not even connect anymore
Let’s dig into each of these.
What You Get Free on 2025 and Newer GM Vehicles
If you bought a new GM vehicle from the 2025 model year onward, OnStar’s “Basics” plan comes standard for eight full years from your purchase date. It’s baked into the vehicle’s price — you can’t remove it, and you don’t pay a monthly fee for it.
That’s actually a solid package. Here’s what’s included:
- Automatic Crash Response — sensors detect a collision and connect you to an emergency advisor automatically
- Remote Commands — lock/unlock doors, remote start, and stop the engine from your phone
- Vehicle Locate — track your car’s location through the myChevrolet, myBuick, myGMC, or myCadillac apps
- Google Maps and Maps+ — full navigation without a paid plan
- Google Assistant — hands-free voice control
- Audio streaming app access — so your infotainment screen stays useful
The 8-year Basics plan is also fully transferable. So if you sell the car three years in, the next owner still gets five more years of those features at no charge.
What the 2025 Basics Plan Does NOT Include
| Feature | Available on Basics? | What You Need Instead |
|---|---|---|
| In-vehicle Wi-Fi hotspot | ❌ No | Connect or Connect Plus plan |
| Stolen Vehicle Assistance | ❌ No | Protect plan |
| Roadside Assistance | ❌ No | Protect or OnStar One |
| Unlimited data streaming | ❌ No | Connect Plus plan |
| OnStar Guardian app | ❌ No | Protect or OnStar One |
So the free plan keeps you safe and connected. It just doesn’t turn your car into a mobile hotspot or dispatch a tow truck.
What Free Meant for 2018–2024 Vehicles
Before 2025, GM offered something called Connected Access. This was included for 10 years on most vehicles built between 2018 and 2024 — but the feature set was much thinner.
Connected Access gave you:
- Monthly vehicle diagnostic reports
- Dealer maintenance notifications
- Smart Driver program (tracks fuel efficiency and driving habits)
That’s it. No remote start from your phone. No emergency response. No Google Maps.
If you owned a 2018–2024 model and wanted to remote-start your car from the couch, you had to pay for the Remote Access or Protect subscription separately.
Another catch: Connected Access was tied to the original buyer. It didn’t automatically transfer to a second or third owner. So if you bought used, the previous owner’s free plan was likely gone.
The 2022–2024 GMC and Buick Exception
Between 2022 and 2024, GMC and Buick tried something different. GM bundled three years of the full Premium Plan into the sticker price of all new vehicles — roadside assistance, navigation, Wi-Fi hotspot, crash response, all of it.
The catch? The cost was rolled into the vehicle’s MSRP. It wasn’t actually free — you just paid for it upfront.
By 2024, GM pulled back on this approach, citing rising vehicle prices and high interest rates. Full Premium stayed standard only on flagship trims like the GMC Denali and Hummer EV. Everything else went back to being an optional add-on.
What If Your Car Is Older? The 3G Problem
Here’s where things get complicated. If your vehicle is from before roughly 2015, there’s a real chance OnStar isn’t working at all — not because of a plan issue, but because the hardware is obsolete.
Older GM vehicles used 2G or 3G cellular modems. When AT&T and Verizon shut down their 3G networks in early 2022, those modems went dark permanently. Millions of vehicles lost their in-car OnStar connection overnight.
GM managed to push over-the-air updates to some 2015 and newer models to keep them running on LTE bands. But for anything older, the in-car hardware is essentially a paperweight for connectivity purposes.
Cellular Hardware Status by Generation
| Hardware Type | Network | Status | Your Options |
|---|---|---|---|
| Analog / 2G | CDMA / GSM | Retired | Guardian App only |
| 3G | HSPA / EVDO | Retired Feb 2022 | Guardian App only |
| 4G LTE | LTE | Active | Full service with OTA updates |
| 5G | 5G / LTE | Emerging | Full native support (2025+) |
If your car runs on retired hardware, the OnStar Guardian app is your fallback. It uses your smartphone’s GPS and accelerometer to detect crashes and connect you to an emergency advisor — no car hardware needed. As a standalone plan, it runs $15/month.
The Paid Plans: What Do They Actually Cost?
If the free Basics plan doesn’t cut it, here’s what the upgrade tiers look like according to OnStar’s current pricing:
OnStar Connect — $14.99/month
Best for 2018–2024 owners who want remote start and lock features that aren’t included in Connected Access. Also adds voice assistant and navigation access.
OnStar Protect — $29.99/month
Focuses on safety. You get Stolen Vehicle Assistance, 24/7 emergency advisor access, and the Guardian app for up to seven family members.
OnStar Connect Plus — $24.99/month
Adds unlimited in-vehicle Wi-Fi for up to seven devices. Enables video streaming and gaming on rear displays.
OnStar One — $49.99/month
The everything plan. Combines Protect and Connect Plus into one bundle. If your vehicle has Super Cruise, expect the price to jump to $64.99/month to cover the hands-free driving mapping data.
Free Trials: How GM Gets You Hooked
New GM vehicles come with a one-month trial of OnStar One — the top-tier plan. This lets you test every feature before committing.
Here’s a trick worth knowing: if you sign up for a paid monthly plan within the first 30 days and add a payment method, GM gives you two extra months free. That’s three months total at no charge.
For used vehicles, eligible 2015 and newer models typically get a three-month OnStar One trial regardless of the previous owner’s history. Certified Pre-Owned vehicles often have this trial pre-activated at purchase.
One thing to note: SiriusXM subscriptions don’t transfer between owners, even if a trial was active. The new owner has to reactivate it separately.
Buying Used? Here’s What to Check
The 2025 shift to the transferable 8-year Basics plan is genuinely good news for used car buyers. If you pick up a 2025 or newer GM vehicle, check the purchase date. Whatever’s left of that 8-year window is yours — automatically, no activation hoops required.
For a 2018–2024 vehicle, don’t count on inheriting any free plan. The old Connected Access plan was tied to the original owner. Your best move is to ask the dealer about trial eligibility and check if the hardware is 4G LTE compatible.
For anything older than 2015, verify the hardware generation before you assume OnStar works at all. The in-car button may light up, but it might not actually connect to anything.
Troubleshooting: When Your Free Features Stop Working
Some owners of 2025 and 2026 vehicles have run into a frustrating glitch: features included in the Basics plan — like Google Maps traffic data — sometimes stop working. The car’s display asks you to upgrade your plan, even though you shouldn’t need to.
This usually comes down to a backend sync issue. Your Basics entitlement exists on the account but isn’t properly registered to your car’s infotainment module. The fix is simple: push the blue OnStar button and ask an advisor to re-provision your vehicle’s services. It takes a few minutes and doesn’t cost anything.
Canada vs. the US: Small Differences, Same Core Deal
The 8-year Basics plan applies in Canada too. The main differences show up in paid plan pricing.
In Canada, OnStar One runs about $49.99 CAD/month, and Super Cruise vehicles often require a $79.99 CAD plan. Wi-Fi hotspot data may also come with different usage caps compared to the unlimited data offered on US plans.
The core logic is the same: free baseline for 2025+ vehicles, paid upgrades for everything extra.
Is OnStar Free? The Real Answer
For a 2025 or newer GM vehicle: yes, the most important features are free for eight years. Crash response, remote start, navigation — you’ve got it without paying a monthly bill.
For a 2018–2024 vehicle: you get basic diagnostics for free, but the features most people actually want require a paid plan.
For older vehicles: free or paid doesn’t matter much if the hardware can’t connect. Check your hardware generation first, then decide if the Guardian app makes sense as a standalone option.
The bottom line — OnStar has shifted from a pure subscription service to something closer to standard safety equipment. For newer cars, it’s free in the ways that matter most.
