This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency Identification Devices when the concern is present. Dealer should also direct their customers to the appropriate section in the Owner manuals that references that the device complies.
full bulletin at NHTSA ↗2007 Chevrolet Trailblazer airbags problems
severe 24 complaints filed with NHTSA · avg repair $1,100 · see airbags across all vehicles →
Failure mileage
Complaints
24
Recalls
0
Avg fix
$1,100
12crashes
16injuries
When does it fail?
Of the 24 airbags complaints filed for the 2007 Chevrolet Trailblazer, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA airbags complaint has been filed on this vehicle in over 17 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering airbags on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This technical bulletin provides a procedure to complete a terminal replacement or connector re connection to correct a condition of Diagnostic Information for Supplemental Inflatable Restraint (SIR) System, Intermittent AIR BAG Indicator/Lamp Illuminated with DTC(s) B0012, B0013, B0015, B0016, B0019, B0020, B0022, B0023, B0026, B0033, B0040, B0042 or B0044 Set (Inspect and Replace Connector Position Assurance (CPA) Retainer)
full bulletin at NHTSA ↗This informational bulletin provides Information on Passenger Presence Sensing System (PPS or PSS) Concerns with Custom Upholstery, Accessory Seat Heaters or Other Comfort Enhancing Devices
full bulletin at NHTSA ↗GENERAL MOTORS: DIAGNOSTIC INFORMATION FOR INTERMITTENT RESTRAINTS, AIR BAG (SIR) INDICATOR/LAMP ON WITH DTC(S) B0012, B0013, B0016, B0016, B0019, B0020, B0022, B0023, B0026, B0033, B0040, B0042 OR B0044 SET. THIS MAY BE CAUSED BY A LOOSE, MISSING, OR BROKEN CONNECTOR POSITION ASSURANCE (CPA) RETAINER AT THE AIR BAG FOR THE SET DTC. INCLUDES TRAILBLAZER EXT. UPDATED 8/16/10. UPDATED 3/12/12.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2007 Trailblazer has clear airbag system problems spanning four categories. First, spontaneous deployments: side and curtain airbags go off without collision while driving normally, hitting potholes, making turns at traffic lights, or rolling up on low curbs. Owners report repair costs of $3,000 to $8,000 and subsequent vehicle immobility or electrical issues. Second, failure-to-deploy in crashes: in head-on impacts at 40–60 mph, T-bone collisions, and rear-end crashes serious enough to total the vehicle, airbags do not deploy. Occupants suffered whiplash, fractures, concussions, and head lacerations. When owners asked the dealer why, they were told "sometimes they go off, sometimes they don't" and that the vehicle "performed as designed." Third, service airbag warning light problems: lights blink intermittently or stay on permanently, tied to steering column faults or disconnected sensors. Some dealers report parts are now discontinued. Finally, one owner reported the passenger airbag disabled indicator malfunctioning at low mileage despite multiple dealer visits. These failures appear across mileages from 1,000 to 140,000 miles, suggesting systemic design or manufacturing issues rather than age-related wear.
Same Chevrolet Trailblazer airbags reports on nearby years: 2005 · 2006 · 2008
Failure modes owners describe
Spontaneous airbag deployment
Side or side-curtain airbags deploy without any collision, impact, or sufficient trigger event. Owners report deployments during normal driving, gentle curb contact, pothole strikes, or even while stopped at traffic lights.
When: Varies; some at low speed (40 mph city driving), some at higher speeds (55 mph highway), some while stationary or making turns
Symptoms owners cite: Airbags deploy without collision or impact; No visible damage to vehicle; Radio and lights may flash or malfunction after deployment; Vehicle may not start after spontaneous deployment; Occurs during smooth driving, gentle turns, or minor road irregularities
Repairs/costs cited: Airbag replacement costs cited at $3,000+; some owners report $8,000 in repairs including airbag replacement and related damage
Failure to deploy in crashes
Front or side airbags fail to deploy in head-on collisions, T-bone impacts, and rear-end crashes at significant speeds (35–60+ mph), even when vehicles are totaled and occupants are injured.
When: Various crash speeds: 35 mph (rear-end), 40 mph (head-on), 45–50 mph (multiple impacts), 55–60 mph (head-on and T-bone)
Symptoms owners cite: No airbag deployment during severe frontal impact; No airbag deployment during T-bone side impact; Vehicle totaled but airbags did not deploy; Occupants sustain injuries (whiplash, head trauma, fractures, lacerations, concussion) that might have been mitigated by airbag deployment
Repairs/costs cited: Not specified by owners; GM representatives stated vehicles 'performed as designed' in some cases
Recalls/TSBs owners mention: In at least two cases, GM sent technicians who stated the vehicle 'performed as designed' and airbags 'functioned properly' despite failure to deploy in severe crashes
Service airbag light — intermittent on/off or stays on
Instrument panel displays 'Service Airbag' or 'Airbag Fault' warning light that blinks intermittently or stays on continuously. Issues reported at relatively low mileage (1,000–134,000 miles) and correlated with sensor or steering column faults.
When: Can occur early (1,000 miles) or later in vehicle life (134,000+ miles); one owner reported starting around 2019 (12 years after purchase)
Symptoms owners cite: Service airbag light flashes on startup or during driving; Light may go off then return; Light blinks during certain driving conditions (speed changes, steering wheel movement); Light eventually remains on permanently; Owners express fear airbags will not deploy in an accident
Repairs/costs cited: One dealership cited loose connection; another identified faulty piece in steering column. One owner reported parts are discontinued and airbag cannot be repaired.
Recalls/TSBs owners mention: One owner references possible Takata recall overlap but uncertain if vehicle was included
Passenger-seat airbag disabled indicator malfunction
Airbag warning light indicates the front passenger airbag is off when a passenger is seated, and the light blinks on the instrument panel. Issue appeared very early in vehicle ownership.
When: Early failure at 1,000 miles of ownership; current mileage reported as 5,622
Symptoms owners cite: Airbag disabled warning light illuminates when passenger seated; Light blinks on instrument panel; Problem persists across multiple dealer diagnostic visits
Repairs/costs cited: Vehicle was taken to dealer twice; diagnosis remained inconclusive
Synthesized from 24 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
On 9/24/08 I was involved in an auto accident where my 2007 Chevrolet trailblazer's airbags failed to deploy. My vehicle impacted another with my entire front end at approximately 45 MPH. My trailblazer was totaled. Not only did my airbags fail to deploy, the onstar system did not automatically go off. I had to hit the button to summon assistance. When we asked the dealer about it, their…
Had airbags trouble with your 2007 Chevrolet Trailblazer?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the airbags problem on the 2007 Chevrolet Trailblazer?
It's a meaningful issue. 24 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $1,100.
At what mileage does the airbags typically fail?
Across the 21 complaints that reported odometer mileage, most airbags failures cluster between 35,000 and 134,500 miles, with the median around 105,000. A quarter of owners report trouble before 35,000; a quarter make it past 134,500. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $1,100 for airbags repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to airbags?
No active recalls currently cover airbags issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2007/Chevrolet/Trailblazer.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.