2011 Chevrolet Avalanche

From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.Consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substance that traps and holds moisture) in US vehicles are under recall. These "non-desiccated" inflators either have been or are required to be replaced.In some cases, the remedy part for these recalled inflators was, or will be, an inflator using either propellant 2004 or 2004L that does contain a desiccant. None of these "desiccated" remedy parts (which were installed in older model year vehicles) are currently under recall for a degradation concern. Certain subsets of desiccated PSAN inflators using propellant 2004 for use as original equipment, however, have been recalled for a degradation concern. All Takata inflators produced with propellant 2004L contain desiccant, and none of these desiccated inflators using propellant 2004L are under recall for a degradation concern. There have been no reported field ruptures in any non-recalled desiccated PSAN inflators.It is understood that desiccants fully saturate at some threshold, at which point any additional moisture will not be captured. This means the degradation process observed in non-desiccated inflators using propellant 2004 may also occur in non-recalled desiccated inflators using propellant 2004, assuming additional moisture enters the inflator and high temperature cycling occurs. Based on available information, desiccant saturation can occur within the first five years in the worst environments, and the time required for full saturation is affected by multiple factors. While no present safety risk has been identified, further work is needed to evaluate the future risk of non-recalled desiccated inflators using propellant 2004.Three entities -- Takata (now known as TK Global), the Independent Testing Coalition, and Exponent -- have been studying the long-term behavior of Takata desiccated PSAN inflators using propellant 2004L (as well as 2004) in the presence of moisture and temperature cycling. The research efforts, which include development of predictive modeling techniques and field sample analysis, are ongoing. To date, none of the researchers have identified field evidence showing that propellant 2004L is undergoing a degradation process that leads to aggressive deployment and potential rupture. However, the time in service of such inflators remains short compared to that of the inflators using propellant 2004. Further study is needed to assess the long-term safety of desiccated inflators using propellant 2004L.The Office of Defects Investigation is opening this investigation to examine whether a safety defect related to propellant degradation exists in non-recalled desiccated PSAN frontal inflators manufactured by Takata. This investigation will require extensive information on Takata production processes and surveys of inflators in the field. Lists of recall actions that may have used desiccated PSAN inflators as remedy parts, as well as the makes and models originally manufactured with them, is available with the downloadable version of this document (see nhtsa.gov/recalls?nhtsaId=EA21002 -- note this information is subject to change/revision as the investigation proceeds). This investigation does not supersede EA15-001, which remains open.

Odometer Fraud. The contact purchased a 2011 Chevrolet Avalanche. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 127,000, and at the time of registration, it was discovered that the mileage was 223,000. Local authorities had been contacted.

NHTSA ID

11656297

Incident

Apr 23, 2025

Mileage

223,000 mi

The contact owns a 2011 Chevrolet Avalanche. The contact stated while driving at an undisclosed speed and making a left turn, there was a loud banging sound coming from under the rear of the vehicle. The vehicle was steered to the side of the road and the steering wheel became stiff. The vehicle was towed to an independent mechanic but was not yet diagnosed. The contact believed that failure was associated with NHTSA Campaign Number: 10V643000 (Suspension); however, the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was approximately 101,000.

NHTSA ID

11642582

Incident

Feb 12, 2025

Mileage

101,000 mi

The structure that holds the rear differential and axle to the frame rusted through and broke off from both sides so the whole rear axle unit broke loose and pulled back so the drive shaft pulled loose and the rear tires were rubbing on the fenders. If this happened at highway speeds I don’t know what might have happened. The vehicle was towed to a welding shop to see if it can be repaired. It has not been inspected. If it can not be repaired the vehicle will have to be junked. There was no warning that this would happen.

NHTSA ID

11475560

Incident

Jul 24, 2022

Vehicle sometimes without warning, would shut down.Yes its available for inspection. Its unsafe because of the element of surprise when suddenly finding out that the ability to control the vehicle is dangerously compromised. Specifically when trying to steer or brake effectively or even trying to get to a safe location. With no warning there is not much time to react to the situation. In spite of having a perfect driver score I become a threat to other drivers and pedestrians when my vehicle shuts down. I have had it looked at by two different local mechanics. After trying a few less expensive options its becoming more evident that its a faulty sensor. After checking to see about other owners with similar issues, I have learned that the crankshaft position sensor was often behind the problem. This is not to say, it is in my case. My point is that with it posing a safety risk why should these other owners and Im sure more to come and me have to respond after possibly being in a deadly accident when this has been a documented as an ongoing problem. As for the rest of the questions, no one other than a mechanic has looked at the vehicle. Some times there would be an indication message on the dash along with engine trouble light and nothing would happen. But most recently it twice shut down without any indicator message. Once was on the highway the other about two hundred yards before a railroad crossing.

NHTSA ID

11444714

Incident

Dec 20, 2021

February of 2021 I was notified the driver side air bag in my truck I drive daily has an issue that if goes off can cause serious injury or death. that as 6 months ago and still no path forward to fix it, how safe it this for me to drive is death is an option? I feel this would be a concern for drivers and the companies doing more to prevent something if a part cannot be secured. Maybe start offering deals to accept the trade ins so your customer doesn't have to drive around an unsafe vehicle because of supply issues? This needs to be addressed so something silly can be avoided.

NHTSA ID

11429418

Incident

Feb 1, 2021

Was advised of the recall of my vehicle on Feb 26th 2021 and that the part to fix the problem was not available it is now six months later and have heard nothing and don,t know how log they expect people to wait with a faulty part to be repaired.

NHTSA ID

11429025

Incident

Feb 26, 2021

DASHBOARD HAS 5 LARGE CRACKS 4 LATERAL AN 1 VERTICAL TOP FRONT SPEAKER HAS FALLEN OFF CLIPS.VEHICLE DASHBOARD STARTED CRACKING WHILE JUST SITTING OVER TIME AND WHILE DRIVING ROAD VIBRATION HELP CRACKING CONTINUE I'M AFRAID THAT WITH THE CRACKING SINCE IT IS IN THE PASSENGER AIRBAG AREA AS WELL IT COULD CAUSE AIRBAG TO DEPLOY CAUSING MORE DAMAGE INJURIES TO PASSENGER OR A WRECK BY SUDDENLY GOING OFF AND CAUSING DRIVER TO SWERVE SUDDENLY.

NHTSA ID

11413432

Incident

Jan 9, 2021

Mileage

97,000 mi

DASH HAS SEVERAL LARGE CRACKS AND IT KEEPS GETTING WORSE WITH TIME

NHTSA ID

11390769

Incident

Jan 16, 2014

Mileage

25,000 mi

This preliminary information communicates information about how to determine if a wheel and tires size change is available.

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.

This PI Communications information on an alternative product dealers can use to perform 19-NA-255: Wax Coating on Frame Peeling, Metal Shows Corrosion/Rusting due to issue with getting product from current supplier listed in the bulletin.

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer’s vehicles that exhibit vibration conditions without utilizing the support of General Motors Technical Assistance Center. If valid vibration frequency or Road Force Variation data has been collected and a repair attempt does not correct the customer complaint, contact General Motors Technical Assistance Center for further support. For any vehicles that remains unrepaired after being at the dealer for three days or more and a related bulletin or PI is not found, contact General Motors Technical Assistance Center for further support.