SUPPLEMENTAL INFLATABLE RESTRAINT (SIR) LIGHT ON, DIAGNOSTIC TROUBLE CODES (DTC) B0026 AND/OR B004. TO INCLUDE 2003-2006 CHEVROLET/GMC FULL SIZE PICKUP AND UTILITY MODELS.
full bulletin at NHTSA ↗2005 Chevrolet Avalanche airbags problems
severe 22 complaints filed with NHTSA · avg repair $1,100 · see airbags across all vehicles →
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.
SIR LIGHT ON STEADY AFTER BULB TEST AND NO DIAGNOSTIC TROUBLE CODES (DTCS).
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners describe two distinct airbag failures. First, the service airbag light comes on and stays on—sometimes intermittently in wet conditions, often permanently—disabling the entire airbag system. This light recurs after dealer repairs, even when sensors are replaced at $400–$500 each. Multiple owners note this is a widespread issue affecting many 2005 Avalanches, with GM having issued service bulletins about wiring but refusing to cover repairs outside warranty.
Second, and more serious, five owners report that both frontal airbags completely failed to deploy during actual collisions at 20–57 mph. These crashes resulted in severe injuries: head lacerations, internal abdominal injuries, skull fractures, traumatic brain injury, brain bleeding, and partial ear amputation. In one rollover, airbags never deployed even though the vehicle rolled. One owner's black box data was downloaded by a third-party engineer GM hired, but no satisfactory explanation was provided. GM stated airbags should deploy at 8–14 mph in head-on collisions; the company was described as uncooperative when contacted. Seatbelts also failed to restrain occupants during the crashes where airbags didn't deploy.
Same Chevrolet Avalanche airbags reports on nearby years: 2007 · 2008
Failure modes owners describe
Service airbag light stays on persistently, disabling airbags
The airbag warning light illuminates and remains on continuously or intermittently during wet/humid conditions. When this light is on, the airbag system is disabled. The light often recurs even after dealer repair attempts. Owners report this as a widespread issue affecting many 2005 Avalanche models.
When: Begins early in vehicle ownership (one owner reports since 2006, about 6 months after purchase); occurs between 16,900 and 56,000 miles
Symptoms owners cite: Service airbag light illuminated on instrument cluster; Light intermittent in rain or wet conditions, steady after heavy rain; Light stays on continuously after illuminating; Light recurs after dealer repairs; Airbag system disabled when light is on
Codes mentioned: 10370149
Repairs/costs cited: Dealers typically replace crash sensors (part 10370149) at $419–$473 per replacement. One owner reports dealer diagnosis of left front impact sensor failure. Another owner was quoted $2,700 for airbag, harness, and wiring harness replacement but no error code was found. Repairs are not covered under expired warranty.
Recalls/TSBs owners mention: GM has issued service bulletins regarding wiring but does not cover repairs after warranty expiration. No recalls mentioned by manufacturer for this issue in the narratives, though owners reference rumors of recalls for airbag sensors and T-connectors.
Frontal airbags fail to deploy in crashes
During actual collisions, the front airbags do not deploy despite impact forces that would normally trigger deployment. This has occurred in head-on collisions at 20–57 mph, side impacts, and rollover situations. Multiple owners report serious injuries (head trauma, internal bleeding, skull fractures) that would likely have been prevented or reduced by airbag deployment.
When: Occurs during accident events at speeds ranging from 20–57 mph
Symptoms owners cite: Both frontal airbags fail to deploy on impact; Occupants strike windshield, visor, or other interior surfaces; Seatbelts fail to restrain occupants properly during crash
Repairs/costs cited: One owner reports airbag sensors were crushed in collision; frame damage and bent frame noted. No repair costs provided for deployment failures because vehicles were not repaired.
Recalls/TSBs owners mention: GM stated airbags should deploy at 8–14 mph in head-on collisions (per owner-provided manual). GM investigation involved third-party engineer and black box download; manufacturer was not cooperative per one owner's account. No recalls or corrective actions mentioned.
Crash sensor repeated failures
Airbag crash sensors (part 10370149) fail prematurely and require replacement. One owner experienced two sensor failures within one year at relatively low mileage. Sensors are replaced by dealers, but the light typically recurs.
When: Failures reported between 16,900 and 56,000 miles; one sensor replaced at 48,000 miles, another by 56,000 miles
Symptoms owners cite: Airbag warning light illuminates; Crash sensor diagnostic code triggered
Codes mentioned: 10370149
Repairs/costs cited: Sensor replacements cost $419–$473 each. Owner expressed concern about system functionality when sensors fail repeatedly at low mileage.
Synthesized from 22 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Common questions
How serious is the airbags problem on the 2005 Chevrolet Avalanche?
It's a meaningful issue. 22 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 30,268 and 93,000 miles, with the median around 60,000. A quarter of owners report trouble before 30,268; a quarter make it past 93,000. 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.