The 2017 Bolt EV is GM's first mass-market electric vehicle with a 238-mile range and generally solid drivetrain reliability, but it's defined by a catastrophic battery fire recall that affected nearly all early models and a few chronic electrical gremlins that come with being a first-generation EV platform.
High-Voltage Battery Fire Risk / Recall Replacement
Common · high severitySymptoms: NHTSA recall 21V-650 and 21V-891 for thermal runaway fire risk, Battery may catch fire while parked or charging, often when near full charge, GM issued parking restrictions and charge limits before replacement became available, Some owners experienced total loss fires in driveways and garages
Fix: Complete high-voltage battery pack replacement under recall. GM eventually replaced entire packs with updated modules. This is warranty/recall work, but if you're buying used, verify replacement was completed via VIN check. If NOT done, some dealers still honor it, but coverage is murky on older cars. No labor cost to owner if recall work, otherwise this would be a $15,000-20,000 job at 8-12 hours labor.
Estimated cost: $0 if recall completed, otherwise $15,000-20,000
12-Volt Battery Failure Leading to No-Start
Common · medium severityTypical onset: 40,000-80,000 mi
Symptoms: Car will not enter 'Ready' mode despite high-voltage battery being charged, Dashboard lights flicker or fail to illuminate, Clicking sound when pressing start button but no propulsion system activation, Remote start and key fob functions stop working intermittently
Fix: The Bolt uses a small 12V AGM battery to power computers and contactors, and it drains faster than traditional cars because systems wake periodically. GM used an undersized battery initially. Replace with OEM or equivalent AGM (not standard flooded). 0.5-1.0 hour labor, battery costs $180-250. Many owners upgrade to a larger capacity aftermarket AGM for longevity.
Estimated cost: $250-400
Shift-to-Park / Shifter Sensor Failure
Occasional · medium severityTypical onset: 50,000-90,000 mi
Symptoms: Warning message: 'Shift to Park' appears even when in Park, Unable to turn off vehicle or remove key fob, Car will not lock or go into sleep mode, draining 12V battery overnight, Occasionally car refuses to shift out of Park
Fix: Shifter actuator or internal sensor fails in the electronic shift-by-wire module. Repair involves replacing the entire shifter assembly (not serviceable internally). 1.5-2.5 hours labor including trim removal and recalibration. Some cases covered under powertrain warranty if under 8 years/100k mi. Used to be on backorder frequently; availability better now.
Estimated cost: $600-1,200
High-Voltage Coolant Leak from Battery Thermal Management
Occasional · high severityTypical onset: 60,000-100,000 mi
Symptoms: Orange or pink coolant puddle under vehicle (orange indicates HV coolant, never touch), High-voltage system warning light and propulsion power reduced, Battery thermal management fault codes, Overheating warnings during fast charging or in hot weather
Fix: The Bolt uses active liquid cooling for the battery pack, and hoses/fittings can develop leaks at connections or from age. This is high-voltage coolant — requires certified HV technician and proper lockout/tagout. Leak location dictates labor: external hoses are 2-3 hours, internal pack connections require partial disassembly at 6-10 hours. Parts $200-800 depending on component. Some indie shops won't touch HV systems.
Estimated cost: $800-3,500
Onboard Charger Failure / Slow Charging
Occasional · medium severityTypical onset: 70,000-110,000 mi
Symptoms: Level 2 (240V) charging becomes extremely slow or stops working entirely, Charging fault messages on dashboard or mobile app, DC fast charging still works normally (uses different hardware), Charger makes buzzing or clicking sounds during attempted charge
Fix: The 7.2 kW onboard charger can fail from heat cycling or internal component degradation. Replacement requires removing plastic undertray and disconnecting HV lines. 3-5 hours labor. Charger unit is $1,200-1,800 from GM, sometimes available refurbished for less. Covered under 8yr/100k mi Voltec warranty if eligible. Critical to verify warranty status before repair.
Estimated cost: $1,800-3,000
Brake Pedal Feel / Regen Braking Coordination Issues
Occasional · low severitySymptoms: Inconsistent brake pedal feel, especially in cold weather or after sitting, Pedal feels spongy or requires more pressure than expected, Transition between regen and friction braking feels abrupt, ABS/traction control activates unexpectedly at low speeds
Fix: This is a blend-braking calibration quirk on early Bolts where the computer coordinates regenerative and friction braking. Some cases improved with software updates (check for TSBs). Actual hardware failure is rare, but if brake booster or ABS modulator fails, it's 4-6 hours labor and $1,200-2,000 in parts. Most issues resolve with updated calibration flash (1 hour, $150-200). Real brake problems show fault codes.
Estimated cost: $150-2,200
Solid commuter EV if battery recall is documented complete and Voltec warranty is still active; avoid if recall isn't verified or you're past 100k miles without a specialist nearby.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.