Owners describe two broad categories of failure: warning light issues that dealer visits don't permanently fix, and complete non-deployment during crashes.
On the warning-light side, dealers have replaced sensors, computers, and springs across multiple visits without resolving intermittent illumination. One owner was told the airbag may or may not deploy in an accident. Another found their VIN wasn't covered by an available recall (06V417000), leaving them unrepaired.
The non-deployment failures are more serious. Owners report airbags staying silent in head-on collisions at 55 mph, side-impact crashes causing rollovers, and impacts at 35–40 mph—all resulting in injuries and totaled vehicles. One crash involved a wheel detachment and three rollovers; another was a pole strike that threw a vehicle through a windshield. Injuries include broken bones, sprained necks and backs.
One owner's mechanic identified loose under-dash connectors as the culprit and mentioned GM has an upgraded replacement set available. That same owner found crash reports from other 05 Tahoes with identical connector problems and non-deployment. GM charged roughly $500 for the connector replacement, but no formal recall was issued by the manufacturer according to owner accounts.
Failure modes owners describe
Loose/defective under-dash airbag connectors
Under-dash connectors for the airbag system fail to make proper electrical contact, preventing airbag deployment in collisions. Owners report that dealers and mechanics have identified loose connectors and GM has developed an upgraded replacement part, suggesting a known manufacturing defect.
When: Identified during service; affects vehicles across mileage ranges
Symptoms owners cite: Airbag system non-functional per dealer diagnostic; Loose connector not making contact; Airbags fail to deploy in actual crashes at speeds exceeding 35 mph
Repairs/costs cited: Under-dash connector replacement approximately $500 (owner cost); upgraded replacement connectors available from GM
Recalls/TSBs owners mention: GM has developed upgraded replacement connector set; no recall noted by owners
Passenger-side airbag sensing system failure
The passenger-side sensing system fails to function properly, preventing deployment. One owner was advised of a potential recall (06V417000) but their VIN was not included.
When: At approximately 136,000 miles
Symptoms owners cite: Passenger-side airbag warning light illuminated on startup
Repairs/costs cited: Passenger-side sensing system replacement needed
Recalls/TSBs owners mention: NHTSA Campaign 06V417000 exists for airbags; owner's VIN was not covered by recall
Intermittent airbag warning light with multiple causes
Airbag warning light comes on and off intermittently; dealers attempt repeated replacements of various components (sensor, computer, spring) without permanently resolving the issue. Dealer indicates airbag may or may not deploy in an accident.
When: Vehicle made multiple dealer visits; exact mileage not stated
Symptoms owners cite: Airbag light comes on intermittently; Airbag light and tire pressure light both illuminate intermittently; Uncertainty about deployment status
Repairs/costs cited: Dealer replaced sensor, replaced computer, replaced spring across four service visits; issue unresolved
Recalls/TSBs owners mention: Dealer advised that airbag may or may not deploy if involved in an accident
Complete airbag non-deployment in collisions
Multiple owners report that airbags failed to deploy during actual crashes including head-on collisions, side-impact collisions, flip-overs, and other significant impact events. These failures occurred across different mileage ranges (75,000 to 199,000 miles) and speed ranges (10 to 55 mph). Owners sustained injuries including broken bones, sprained backs and necks.
When: Various mileage: 75,000 miles; 131,000 miles; 136,000 miles; 199,000 miles
Symptoms owners cite: No airbag deployment in head-on collision at 55 mph; No airbag deployment in side-impact flip-over at 10 mph; No airbag deployment in rollover after wheel detachment at 50 mph; No airbag deployment in animal collision at 55 mph; No airbag deployment in front-end impact at 35-40 mph; No airbag deployment during collision with pole/trees
Repairs/costs cited: No repairs completed; vehicles were totaled or sent to body shop
Service airbag warning light without clear cause
Service airbag warning light illuminates on startup with beeping sound. Owners are confused about which airbags are non-functional (front vs. side) and whether the vehicle is safe to drive. No clear diagnostic or repair path provided.
When: At approximately 122,807 miles and during normal startup
Symptoms owners cite: Service airbag warning light illuminated on startup; Beeping sound with warning light; Uncertainty about which airbags are affected
Codes mentioned: Multiple airbag codes relating to driver and passenger seats (complaint #14)
Repairs/costs cited: Not diagnosed or repaired
Synthesized from 15 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.