The most widespread issue is the service airbag light coming on and off unpredictably, or staying lit continuously. Owners describe the light triggering when moving seats, sometimes extinguishing mid-drive then reappearing hours or days later. Dealership repairs—replacing seat sensors, pretensioners, and wiring harnesses—often fail to stick; owners report the light coming back within 35 miles or a few weeks of a $215–$700 repair bill.
Several owners experienced airbag failure to deploy in actual collisions, including rear-end impacts at 30–68 mph and a frontal crash into a guard rail. One owner was hit while on the expressway at 60 mph with an infant in the car; the vehicle shut down due to concurrent electrical faults and the airbags never deployed.
Airbag faults frequently occur alongside check engine lights, traction control warnings, and "Engine Power Reduced" messages, especially at highway speeds. Vehicles enter limp mode, shut down mid-drive, or fail to start—pointing to a broader electrical problem, not just an airbag sensor. GM issued campaigns 14V355000 and 16V507000 for electrical and airbag issues, but many owners report their VINs are excluded from coverage and GM denies recalls or reimbursement for independent repairs.
Failure modes owners describe
Service airbag light illumination—intermittent or persistent
The most common failure across narratives: airbag warning light comes on and off unpredictably, or stays on continuously, triggered by seat movement, seat occupancy, ignition, or seemingly random electrical events.
When: Mileage ranges 3,000 to 210,000; no clear wear pattern—failures occur early and late in vehicle life.
Symptoms owners cite: Service airbag light illuminates on instrument panel; Light flashes intermittently or stays on continuously; Light often triggered when moving seats forward/backward; Light may extinguish after driving then reappear; Sometimes accompanied by 'Service airbag system' message on driver information center
Codes mentioned: Passenger side airbag system fault, Front passenger seat belt pretensioner fault, Passenger seat sensor fault, Airbag module code (unspecified in most narratives)
Repairs/costs cited: Repairs typically involve seat-mounted wiring, terminals, sensors, or pretensioner replacement ($215–$700+). Many repairs fail to resolve the issue; light recurs within days to weeks after service. Some owners report dealer diagnostics finding no codes or unable to duplicate failure.
Recalls/TSBs owners mention: GM refuses recall; states no defect despite complaints. Owners note GM's NHTSA Campaign 16V507000 (Air Bags, Electrical System) and 14V355000 (Electrical System) do not include many affected VINs. Parts shortages for Takata-related recall repairs. GM warranty and recall-reimbursement refusals if independent repair shops used.
Airbag failure to deploy in collision
Vehicle struck in rear or front-end collision; airbags did not deploy despite impact severity. Occurs across multiple mileage and collision scenarios.
When: Mileage 11,000 to 188,000 miles; collision events at speeds ranging 30–68 mph.
Symptoms owners cite: Airbags remain unexployed after rear-end collision at 68 mph; Airbags do not deploy after rear-end collision at 30+ mph; Airbags fail to deploy after front-end impact into guard rail; Vehicle pushed into other lanes or barriers; occupants unprotected
Codes mentioned: Airbag deployment circuit fault (inferred from failure), Electrical system malfunction code (14V355000 campaign related)
Repairs/costs cited: Vehicle destroyed or towed; no repairs performed in most cases. One case mentions electrical system repair parts unavailable.
Recalls/TSBs owners mention: NHTSA Campaign 14V355000 (Electrical System) noted in some collision cases; parts for repair were unavailable. No manufacturer response documented in most deployment-failure narratives.
Passenger seat sensor and pretensioner faults
Seat belt pretensioner, passenger occupancy sensor, and seat-mounted electrical connections fail, triggering airbag warning light. Appears to be a root cause in many intermittent-light cases.
When: Mileage 38,000 to 120,000 miles.
Symptoms owners cite: Service airbag light illuminates when passenger occupies front passenger seat; Light triggers when seat is moved forward or backward; Passenger side airbag disables or fails to sense occupant; Frayed or loose wiring under seat detected by owners
Codes mentioned: Passenger seat belt pretensioner sensor fault, Passenger seat occupancy sensor fault, Passenger side airbag sensor malfunction
Repairs/costs cited: Seat belt pretensioner replaced ($215–$325), passenger seat sensor replaced, seat wiring/terminals repaired ($264–$700). Multiple narratives report repairs fail and light recurs within 35 miles to weeks.
Recalls/TSBs owners mention: GM refuses recall and reimbursement for most VINs. Some owners informed VIN not included in Campaign 16V507000. No TSB or warranty program mentioned.
Concurrent electrical system instability—power loss, engine stalling, reduced power mode
Airbag light often appears alongside check engine light, traction control light, and engine power reduction messages. Vehicle experiences stalling, power loss, and ignition issues, suggesting broader electrical fault.
When: Mileage 60,000+ miles; recurring over months or years.
Symptoms owners cite: Service airbag light and check engine light flash on simultaneously; Traction control light illuminates with 'Engine Power Reduced' message; Vehicle enters limp mode or shuts down at highway speeds (60–70 mph); Engine power reduced by 50% per onboard display; Key stuck in ignition; Vehicle will not start after electrical events
Codes mentioned: Electrical system fault (NHTSA Campaign 14V355000), Engine power reduction code, Traction control system malfunction
Repairs/costs cited: Multiple electrical repairs attempted: alternator, battery, wiring. Dealership diagnostics unable to identify root cause. One owner reports spending $700+ on multiple repairs with no resolution.
Recalls/TSBs owners mention: GM issues recall notice 14V355000 (Electrical System) to some owners, but repair parts unavailable. No TSB or warranty extension documented.
Airbag light recurs after dealer repair
Dealership or independent shop repairs airbag-related component; light reappears within days to weeks, indicating persistent electrical fault not resolved by component replacement.
When: Occurs repeatedly; cycles of repair and recurrence span months to years.
Symptoms owners cite: Light goes off after repair, then reappears after 10–35 miles driven; Light recurs after 1 week of driving post-repair; Diagnostic reset clears light temporarily but fault returns; System reset at dealership finds no codes on second visit
Codes mentioned: Same codes reappear after repair, No fault codes stored on subsequent diagnostics (suggests intermittent electrical connection issue)
Repairs/costs cited: Owners report paying $264–$700 for repairs with repeated failures. One owner spent $325 + one week wait time; light recurred 35 miles later. Another paid $700+ across multiple shops with no resolution.
Recalls/TSBs owners mention: GM's response: No recall, no warranty extension, no reimbursement for failed repairs. One owner threatened with recall-reimbursement denial if independent shop used for future repairs.
Synthesized from 65 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.