Owners describe power steering assist vanishing without warning during highway driving and low-speed maneuvers, often paired with dashboard warnings for ABS, Stability Track, and Service Power Steering. The steering wheel either seizes completely or becomes extremely stiff. Many incidents occur in cold or wet weather. The problem frequently resolves after restarting the engine, but recurs unpredictably.
A second pattern emerges: complete electrical blackouts. Radio, navigation, OnStar, and power steering all cut out simultaneously, sometimes leaving the car unable to start. After 5–20 minutes or a restart, systems come back online—only for the warnings to return.
Owners identify wheel bearing sensors and hub assemblies as a recurring culprit. When a rear bearing sensor fails, the vehicle's computer treats it as a safety event and shuts down power steering and stability control. Some owners have replaced three different wheel bearings within 12 months.
General Motors issued recall 14V450000 for 2014 Impala steering systems. However, many owners discover their VIN is not included despite experiencing identical failures. Others had the recall performed early in ownership (around 1,000 miles) at dealership purchase inspections, yet failures resume at 20,000, 70,000, or 120,000 miles—suggesting the initial fix was incomplete or temporary.
Dealers often cannot reproduce the problem, retrieve diagnostic codes, or determine a root cause. Repair estimates range from $300 for software reprogramming to $2,800 for steering gear replacement. One owner was incorrectly charged $300 for a recall fix that should have been free. Extended warranties frequently deny coverage, citing owner fault. The intermittent nature of failures makes this hazardous, particularly on highways and during turns when steering authority is critical.
Failure modes owners describe
Power Steering Failure with ABS and Stability Control Light Activation
The electric power steering (EPS) system suddenly loses assist, often accompanied by ABS and Stability Track warning lights. Steering wheel becomes very difficult or impossible to turn. Failures may be permanent or temporary (reboot after restart). Some owners report the system returns to normal after turning vehicle off and on again.
When: Varies widely; reported as early as 8,600 miles to 179,000 miles; some instances correlate to cold weather (20-35°F), wet/rainy conditions, ice-covered roads, highway speeds (45-70 MPH), and low-speed maneuvers (parking, turns at intersections). One incident at 29,000 miles, another at 70,017 miles.
Symptoms owners cite: Power steering assist completely or partially lost; Steering wheel becomes stiff and difficult to turn in either direction; Steering wheel seizes or feels locked; Service Power Steering warning message displayed; ABS warning light illuminated; Stability Track/Stabilitrak warning light illuminated; Service warning lights come on dashboard (sometimes with chime); Engine may shut down briefly then restart; Radio or electrical systems may cut out briefly when failure occurs; Difficulty maneuvering vehicle at highway speeds
Codes mentioned: EPS warning indicator, Stability Track service code, ABS warning light, Service Power Steering code
Repairs/costs cited: Owners report dealers replacing rear wheel bearing hubs and assemblies ($495 cited), reprogramming software, replacing steering position sensors, replacing steering gear/rack and pinion (estimate of $2,800 cited in one case). Many owners report dealers unable to diagnose or reproduce the problem. Multiple wheel bearing replacements within 12-month period in some cases. One owner paid $300 for software update that was supposed to be covered under recall.
Recalls/TSBs owners mention: General Motors issued NHTSA Campaign Number 14V450000 (Steering) for 2014 Impala models; however, multiple owners report their VINs are excluded from the recall. Some owners had recall performed previously (often at around 1,036 miles at purchase) but failure recurred at higher mileage. Dealership software reprogramming sometimes performed. Dealers have stated warranty expired, no further assistance offered, or referred owners to call NHTSA. One owner reported manufacturer told them an unknown recall repair had already been completed and could not assist further.
Electrical System Failures Leading to Loss of Power Steering and Dashboard Lights
Intermittent electrical failures result in loss of power to multiple vehicle systems simultaneously: power steering, radio, navigation, OnStar, and dashboard instrumentation. Electrical power cuts out and restores unpredictably while driving or at startup. Water entry into trunk may be contributing factor in at least one case.
When: Reported across wide mileage range (32,000 to 120,000+ miles); occurs both at startup and during highway operation (55-70 MPH reported). Intermittent nature makes timing unpredictable.
Symptoms owners cite: Loss of power steering assistance with all electrical power loss; Radio shuts off or loses volume; Navigation system turns off; OnStar system turns off; Dashboard lights go blank or flicker; All electronic sensors go dead simultaneously; Car shuts off while driving then restarts on its own; Vehicle won't start (all power lost); Power returns after waiting 5-20 minutes; Warning lights for power steering, ABS, and Stability Track come on when power is restored; Service lights appear intermittently (Power Steering, ABS, Stability Track, Service Brake Assistance); Seat adjustment fails to operate; Window controls fail; Backup camera warnings and side detection warnings display
Codes mentioned: Service Power Steering, Stability Track code, ABS code, Service Brake Assistance code, Front Camera warning, Backup Camera warning, Side Detection warning
Repairs/costs cited: One owner reports dealership suggested water intrusion into trunk as possible cause of electrical issues. Owners report replacing battery and alternator without resolving the problem. At least one technician diagnosed bad ground wire. Most repairs not completed; owners unable to afford repair costs. One owner describes needing to leave vehicle parked in garage for 6+ months due to inability to afford dealer repair.
Recalls/TSBs owners mention: Limited manufacturer response documented. One owner reports calling GM and being told recall 14515 (electrical issues) was not part of their vehicle despite experiencing electrical problems. Most owners report no assistance or remedy from manufacturer when contacted.
Wheel Bearing Sensor and Hub Assembly Failures Triggering Power Steering Loss
Rear wheel bearing sensors or hub assemblies fail, triggering power steering and stability control system warnings. The vehicle interprets bearing sensor signals as a system error and disables power steering as a safety failsafe. Multiple wheel bearing replacements within short time periods reported by some owners.
When: Failures reported at 20,106 miles, 70,017 miles, and within 12-month periods; one owner replaced three wheel bearings on different wheels within past 12 months. Cold weather may be factor in some incidents.
Symptoms owners cite: Power steering fails when rear wheel bearing sensor fails; Stability Track light comes on; ABS light illuminates; Service Power Steering message displays; Steering becomes very difficult or impossible to turn; Vehicle may lose traction control and ABS functionality when bearing fails
Codes mentioned: Wheel bearing sensor fault code, ABS warning, Stability Track code, Power Steering code
Repairs/costs cited: Rear passenger wheel bearing hub assembly replaced (one case at 70,017 miles). Owner paid $495.14 for rear hub replacement in one documented case. Another owner replaced three wheel bearings on different wheels within 12 months and subsequently experienced two tire 'plow-outs' with rim damage at $650 per rim and $230 per tire.
Recalls/TSBs owners mention: One recall (dated July 23, 2014) mentioned in narrative, though VINs and timing of recall application vary. One dealer applied recall work at 1,036 miles and charged $300 for software update that should have been free. Dealers have stated recall checked but issue recurred at higher mileage, suggesting potential inadequacy of initial recall repair.
Steering System Seizure During Maneuvers
Steering wheel suddenly becomes locked or frozen while driving, especially during turns or lane changes at highway speeds. Requires manual effort to regain control. Feels like steering is stuck in a notch or certain position. May occur on smooth pavement or slippery road surfaces.
When: Reported at highway speeds (45-70 MPH), during lane changes, turns at intersections and traffic lights; also at lower speeds (25-35 MPH) and in parking situations. One incident at 8,600 miles; another at 23,729 miles. More frequent in cold temperatures (20-35°F).
Symptoms owners cite: Steering wheel freezes or locks suddenly; Feels like steering is stuck in a notch or certain position; Requires manual force to regain control and unlock steering; Difficulty turning steering wheel in either direction; On slippery roads, over-correction may occur after wheel unlocks; Steering may feel loose or abnormally loose at other times; Intermittent nature makes it difficult for dealers to reproduce
Codes mentioned: EPS module fault, Power Steering warning
Repairs/costs cited: Diagnostic trouble codes often not retrievable by mechanics. Dealers frequently state they cannot duplicate the condition. Some owners report steering sensor recalibration attempted but failure persisted. One case indicated steering gear replacement needed but repair not completed.
Recalls/TSBs owners mention: Multiple owners report VINs excluded from NHTSA Campaign 14V450000 (Steering) despite experiencing identical symptoms to recalled vehicles. One owner noted steering sensor was replaced by independent mechanic in 2016 but issue recurred.
Multiple System Failures with Engine Power Loss
Vehicle experiences cascading system failures during operation: Stability Track, Power Steering, ABS, and engine power reduction occur simultaneously. Engine acceleration dies, vehicle slows dramatically while driving at highway speed with accelerator fully depressed. Service lights and warning messages display.
When: Reported at highway speeds (60 MPH during rain, on interstate); one incident at 45 MPH; symptoms may appear after several thousand miles of ownership but occur intermittently.
Symptoms owners cite: Service Stability Track warning light illuminates; Service Power Steering warning light illuminates; Engine Power Reduced message displays; Vehicle loses acceleration capability; Vehicle slows from highway speed (60 MPH) to 20 MPH with accelerator fully depressed; Power steering becomes very difficult or impossible; Multiple warning lights and alert sounds come on simultaneously; Radio or dashboard electronics may cut out
Codes mentioned: Service Stability Track, Service Power Steering, Engine Power Reduced, ABS code, Service Brake Assistance
Repairs/costs cited: Dealers have cleared fault codes but unable to determine root cause. Steering gear replacement suggested in one case ($2,800 estimate). Owners report concerns codes will recur since underlying cause remains undiagnosed.
Recalls/TSBs owners mention: Dealer reprogrammed vehicle after owner cited existing recall; however, brakes subsequently ground and all warning lights returned. Some owners report dealer states they cannot find anything wrong despite repeated failures.
Synthesized from 137 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.