The 2023 Bolt EV represents the second-generation platform with significant improvements over the 2017-2022 models, but it's still too new for high-mileage pattern failures. Most issues we see are early-life software glitches, charging system quirks, and carryover concerns from the previous generation that buyers should watch for.
DC Fast Charging Speed Degradation and Thermal Management Issues
Occasional · medium severity
Typical onset: 20,000-50,000 mi
Symptoms: DCFC sessions capping at 55-65 kW instead of advertised 95 kW on newer units, Charging speed dropping significantly after first 10-15 minutes, Battery cooling fan running excessively loud during or after fast charging, Reduced range in hot weather (15-20% below EPA estimate)
Fix: Often requires thermal management system software updates (0.5 hrs) and occasionally coolant flush/replacement for the battery thermal system (2.5 hrs). Some cases need battery coolant pump replacement. GM has issued TSBs addressing calibration.
Estimated cost: $150-800
Onboard Charger Failure
Occasional · high severity
Symptoms: Level 2 charging completely inoperative while DC fast charging works fine, Charging fault messages on dash, No response when plugged into home EVSE, Intermittent charging that stops mid-session
Fix: Onboard charger module replacement requires removing front underbody shields and disconnecting HV system (3.5 hrs). This is a known carryover issue from first-gen Bolts. Part is dealer-only and requires HV isolation procedures.
Estimated cost: $2,200-3,200
Electric Drive Unit Inverter Software Glitches
Occasional · medium severity
Symptoms: Propulsion power reduced warnings with no codes stored, Temporary loss of regenerative braking force, Clunking from drive unit during low-speed maneuvers or gear selector changes, Vehicle entering 'limp mode' requiring power cycle to clear
Fix: Usually resolved with drive unit control module software reflash (1.0 hr), but persistent cases may need inverter module replacement (4.5 hrs with HV isolation protocol). Some TSBs address shift clunk with software updates.
Estimated cost: $180-3,800
Infotainment System Freezing and Connectivity Failures
Common · low severity
Symptoms: Black screen on startup requiring hard reboot, Android Auto or Apple CarPlay disconnecting randomly, Backup camera not displaying despite working sensors, Climate control unresponsive through touchscreen, Charging status not updating in mobile app
Fix: Most cases resolved with infotainment control module software update (0.8 hrs). Rare hardware failures require ICU replacement (2.0 hrs). GM has pushed multiple OTA updates but many owners still report issues requiring dealer intervention.
Estimated cost: $150-1,200
Heat Pump System Failures in Cold Weather
Occasional · medium severity
Symptoms: Weak or no cabin heat below 32°F despite system running, Range loss of 40-50% in cold weather (worse than typical EV degradation), HVAC compressor cycling excessively or not running, Defrost inadequate for windshield clearing
Fix: Heat pump refrigerant charge verification and recharge if low (1.5 hrs), or heat pump module replacement for compressor/valve failures (4.0 hrs). The 2023+ uses a more complex heat pump than previous Bolts. Some cases need software recalibration of thermal management strategy.
Estimated cost: $300-2,800
12-Volt Battery Premature Failure
Common · medium severity
Typical onset: 15,000-40,000 mi
Symptoms: Vehicle won't enter 'ready' mode despite fully charged HV battery, Accessories working but propulsion system inactive, Repeated jump-starts needed within weeks, Battery warning light with P0A7F or similar codes
Fix: 12V battery replacement with AGM type (0.5 hrs) plus DC-DC converter testing. The Bolt's DC-DC converter can fail to maintain 12V system properly, killing batteries prematurely. If converter is bad, replacement is 2.5 hrs under the hood near the HV junction box.
Estimated cost: $250-1,400
Owner tips
Avoid repeated back-to-back DC fast charging sessions—let the battery cool 30+ minutes between to preserve thermal system and cell longevity
Keep infotainment software updated through dealer or OTA when available—GM pushes fixes regularly for connectivity bugs
In cold climates, precondition cabin while still plugged in to preserve range and reduce heat pump strain
Monitor 12V battery voltage monthly with a multimeter—should read 12.6-12.8V key-off; replace proactively at first sign of weakness to avoid stranding
Use Level 2 charging as primary method; DCFC regularly accelerates battery degradation and thermal system component wear
A solid used buy for 2023+ models if you can verify no onboard charger or inverter history—just budget for an eventual 12V battery and expect typical EV cold-weather range loss.
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.
Fitment notes: 12V auxiliary battery; main traction battery is 65 kWh lithium-ion; auxiliary battery located in cargo area
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Every control module on the 2022-2023 Chevrolet Bolt EV — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
Drive Motor Control Module (DMCM)3.5 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Integrated with drive motor inverter assembly, under hood on driver side
🔧 Techline Connect
⚠️ Functions as powertrain controller for electric drive motor. High-voltage system; requires EV safety certification.
Electric Power Steering Control Module (EPSCM)2.0 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Integrated with steering column assembly, below instrument panel
🔧 Techline Connect
⚠️ Steering angle sensor calibration required after replacement.
⚠️ Updated digital display. Mileage transfer required from old module or GM database.
Headlamp Control Module (HCM)0.8 hr R&Rrelearn only +0.3 hr▸ programming details
📍 Under hood, driver side near headlamp assembly
🔧 Techline Connect or Autel
⚠️ Auto high-beam calibration if equipped. Basic function available without coding.
Driver Seat Control Module (DSCM)0.8 hr R&Rrelearn only +0.2 hrwith power driver seat▸ programming details
📍 Under driver seat
🔧 Techline Connect or Autel
⚠️ Memory seat position relearn if equipped. Basic function available without coding.
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
General Motors, LLC (GM) is recalling certain 2017-2023 Chevrolet Bolt EV vehicles. This recall includes certain vehicles previously repaired incorrectly under NHTSA recall number 22V-930. After a crash with seat belt pretensioner deployment, the pretensioner exhaust may ignite carpet fibers near the B-pillar, causing a fire.
Consequence: A fire increases the risk of injury.
Remedy: Dealers will inspect both front seat belt pretensioners and, if necessary, install metal foil at the carpet near the pretensioner exhaust. Certain vehicles will also need a pretensioner cover installed. Repairs will be performed free of charge. Owner notification letters were mailed January 24, 2024. These vehicles were previously recalled for this same issue under recall number 22V-930 and will need to have the new remedy performed. Owners may contact GM EV Concierge at 1-833-EVCHEVY (1-833-382-4389) (TTY 711 / 1-800-833-2438) or Customer Service at 1-800-222-1020. GM's number for this recall is N232421970.
AIR BAGS:FRONTAL · 23V567000
2023-08-10
General Motors, LLC (GM) is recalling certain 2022-2023 Chevrolet Bolt EV vehicles. The instrument panel may be missing the perforation on the underside of the panel cover that allows the passenger-side air bag to deploy properly.
Consequence: An air bag that does not deploy properly in a crash increases the risk of injury.
Remedy: Dealers will replace the instrument panel, free of charge. Owner notification letters were mailed December 21, 2023. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N232414710.
STRUCTURE:BODY:ROOF AND PILLARS · 22V930000
2022-12-15
General Motors, LLC (GM) is recalling certain 2017-2023 Chevrolet Bolt EV vehicles. After a crash with seat belt pretensioner deployment, the pretensioner exhaust may ignite carpet fibers near the B-pillar, causing a fire.
Consequence: A vehicle fire can increase the risk of injury.
Remedy: Dealers will install metal foil at the carpet near the pretensioner exhaust, and install a pretensioner cover as necessary, free of charge. Owner notification letters were mailed between January 23, 2023 and April 25, 2023. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N222383790.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2023 Chevrolet Bolt EV Electric Motor and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.