2022 CHEVROLET BOLT EV

Typical onset: 60,000-100,000 mi

Symptoms: Rapid loss of range beyond normal degradation (>20% capacity loss), Propulsion Power Reduced warning on dash, Battery conditioning system faults in cold weather, Uneven cell balancing visible in diagnostic scan

Fix: Despite the 2022 having updated cells, thermal management failures still occur. Battery replacement is typically warranty-covered under 8yr/100k mi, but out-of-warranty requires complete pack swap. Labor is 8-12 hours for removal/installation plus calibration. If under warranty, $0; if not, you're looking at used pack sourcing.

Estimated cost: $8,000-16,000

Typical onset: 70,000-110,000 mi

Symptoms: Whining or grinding noise from front end during acceleration, Noise increases with vehicle speed, not tied to road surface, Metal shavings in drive unit fluid (if checked during service), Eventual Service Propulsion System message

Fix: The Bolt's single-speed transaxle uses bearings that can fail prematurely, especially in high-mileage units or those subjected to hard launches. Drive unit R&R requires lifting vehicle, disconnecting HV cables (safety protocols mandatory), and recalibration. Book time is 6-9 hours. Remanufactured units are becoming available but new from GM is the typical route.

Estimated cost: $4,500-7,500

Typical onset: 50,000-80,000 mi

Symptoms: No heat or A/C output despite system running, Intermittent cabin climate control, Coolant smell in cabin (heater core leak), Rapid depletion of battery range in climate use (compressor drawing excessive current)

Fix: The electric HVAC compressor and PTC heater core are known weak points. Compressor replacement requires refrigerant recovery, HV disconnect, and 4-6 hours labor. Heater core is worse—dash removal required, 8-10 hours. Parts availability can be spotty, especially for heater cores.

Estimated cost: $1,800-3,200 compressor; $2,500-4,000 heater core

Symptoms: DC fast charging session terminates prematurely with error, Burnt smell or visible melting around charge port, Charge port door won't release after session, Unable to initiate fast charge, L2 charging unaffected

Fix: High-current DC sessions (especially in hot weather or with older DCFC stations) can overheat the CCS inlet contacts. Requires inlet assembly replacement, HV safety lockout, and sometimes wiring harness repair if damage spread. Labor is 3-5 hours depending on harness involvement. GM has updated parts with better thermal management.

Estimated cost: $800-1,800

Typical onset: 30,000-60,000 mi

Symptoms: Vehicle won't go into Ready mode despite HV battery charged, Accessory systems dead, no dash lights, Clicking from under hood when trying to start, Multiple phantom electrical warnings

Fix: The 12V AGM battery is tasked with running all accessories and is charged by the HV system. The Bolt's DC-DC converter can stress the 12V, causing early failure. Replacement is straightforward—0.5-1 hour labor—but the AGM battery itself is pricey ($250-350). Always check DC-DC converter output when replacing to prevent repeat failure.

Estimated cost: $300-500

Typical onset: 40,000-90,000 mi

Symptoms: Power Steering Service warning on dash, Heavy steering effort, especially at low speeds, Intermittent loss of assist during turns, Grinding or binding sensation in steering wheel

Fix: The electric power steering rack can develop internal faults in the assist motor or control module. Rack replacement requires alignment and 4-6 hours labor. GM has had TSBs on connector corrosion causing false codes—always diagnose thoroughly before replacing rack. If it's just the module, repair drops to $600-900.

Estimated cost: $1,400-2,800