My Chevy Equinox EV won't start or charge. Is it the 12-volt battery?

Short answer: When an Equinox EV won't start or shows Service Charging System or Service Vehicle, owners often found a dead 12-volt battery. A 12-volt jump or charge gets some going, then the dealer should test and replace it. If you see Service High Voltage System with no heat or A/C, GM's bulletin PIT6112C points dealers to the A/C refrigerant system and software updates. Call OnStar for the codes and book the dealer.

Symptom: The screen is slow to come on, red warning icons, 'Service Charging System Vehicle May Stall', 'Service Vehicle', the car won't go into gear, or charging stops partway.

What to check first

1. Call OnStar or check the app for codes.
2. Try a 12-volt jump or charge if you have a jump pack.
3. If charging stopped, try a different charger or adapter once.
4. If you see Service High Voltage System, ask the dealer about bulletin PIT6112C and software updates.
5. Run your VIN at nhtsa.gov/recalls.

Likely causes

1. Dead 12-volt battery. Almost every modern car, including EVs and hybrids, has a small 12-volt battery that powers the computers, locks and screens. When it's weak, the car can show a pile of unrelated warnings or refuse to go into gear, even with a full main battery.
2. Charging adapter or charger fault. In one thread, an owner's charging stopped at a Tesla Supercharger with GM's adapter, and another's car died right after unplugging from a fast charger.
3. A/C (refrigerant) system fault setting P0534. GM Preliminary Information PIT6112C covers 2023-2024 Lyriq, 2024-2025 Blazer EV and 2024-2025 Equinox EV with a Service High Voltage System message and code P0534 (high-voltage charging not working). It says the cause is the refrigerant (A/C) system not working as intended. Dealers update the BCM and BECM software if available, then evacuate and refill the A/C, and look for leaks with a black light if the charge comes back short.
4. Other high-voltage faults. Codes like P1939 from OnStar point to the electric drive unit and need the dealer.

What it usually costs

Owners had these handled under warranty and didn't post prices.

Is it safe to keep driving?

If it says the vehicle may stall, don't count on it. Owners had it towed. Once the 12-volt is replaced and it charges normally, they drove it as usual.

DIY or shop?

Jumping the 12-volt and keeping a jump pack are DIY. Codes, software and A/C refrigerant work are dealer jobs. An EV's high-voltage system can stay live with the car off. Leave the orange cables, the big battery and the drive unit to a trained EV technician.

Recalls, bulletins and complaints in plain words

• Bulletin: GM Preliminary Information PIT6112C covers 2023-2024 Lyriq, 2024-2025 Blazer EV and 2024-2025 Equinox EV with a Service High Voltage System message and code P0534 (high-voltage charging not working). It says the cause is the refrigerant (A/C) system not working as intended. Dealers update the BCM and BECM software if available, then evacuate and refill the A/C, and look for leaks with a black light if the charge comes back short. NHTSA lists 7 recalls for the Equinox EV in these years, and none is about the 12-volt battery or charging. Check your VIN at nhtsa.gov/recalls. If your car is part of a recall, the dealer fixes it for free.
• Plain words: The complaint count below shows how often owners reported problems that mention these words to NHTSA. A count is not proof of a defect.
• NHTSA complaints: 17 keyword-matched complaints for Chevrolet Equinox EV 2024–2025 (of 274 unique complaints queried, NHTSA complaints API by model year, queried 2026-10-31; keywords: charg, high voltage, stall, 12 v, battery, won t (start, drive), loss of power). This counts complaints that mention these words. It is not a defect finding.

What owners report

• In Getting “Service Charging System Vehicle May Stall”. Message on Reddit r/EquinoxEv, an Equinox EV wouldn't start: the screen took 30 seconds to come on, showed a red car icon, then 'Service Charging System Vehicle May Stall'. OnStar read code P1939 and said to tow it. The owner later confirmed the 12-volt battery was dead. The owner also noticed the OnStar and overhead console lights on in a car that hadn't been driven for two days.
• In 2025 Equinox EV can't charge, now can't even drive at 935 miles on it 🤦 on Reddit r/EquinoxEv, a 2025 Equinox EV with 935 miles wouldn't charge and then wouldn't drive. The dealer ran its checks and returned it the next day without replacing anything, and the owner suspected a faulty 12-volt. In the comments, one owner's car stopped charging at a Tesla Supercharger while using GM's official adapter, and another's died right after unplugging from a level 3 fast charger.

Quick tip

Keep a small jump pack in the car. Most of these 'my EV is dead' stories ended with a 12-volt battery.

Vehicle focus: Chevrolet Equinox EV, 2024-2025.

Safety / mechanic note

A car that may stall is a safety risk. Verify with a mechanic.