Illustration"TAKATA" RECALL"
2011 Chevrolet Silverado 1500
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2011 Chevrolet Silverado 1500 do not stand out strongly from the model-year median of 525.
About this comparison →How this year compares
Owner complaints by model year
Compare all Silverado 1500 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
420–25K
4225–50K
5450–75K
5675–100K
50100–150K
19150K+
263 reports with mileage · 300 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Air Bags. Review the 306 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Structure. Review the 72 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 40 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
22 crash reports4 fire reports6 injury reports
What owners actually said
563 reportsMY 2011 SILVERDO DASH IS CRACKING BY THE PASSANGER AIR BAG AND ABOVE THE INSTRUMENT PANEL. THE CRACKS GET BIGGER IN COLD TEMPERATURES AND CAUSE A BIGGER GAP IN THE COLD TEMPERATURES. AS THE WEATHER GETS WARM THE GAP GETS SMALLER. THIS CRACK IS DUE TO A DEFECT IN THE DASH MATERIAL. I FEAR THAT IF I WERE TO GET INTO A ACCIDENT THA…
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MY 2011 SILVERDO DASH IS CRACKING BY THE PASSANGER AIR BAG AND ABOVE THE INSTRUMENT PANEL. THE CRACKS GET BIGGER IN COLD TEMPERATURES AND CAUSE A BIGGER GAP IN THE COLD TEMPERATURES. AS THE WEATHER GETS WARM THE GAP GETS SMALLER. THIS CRACK IS DUE TO A DEFECT IN THE DASH MATERIAL. I FEAR THAT IF I WERE TO GET INTO A ACCIDENT THAT PIECES FROM THE DASH COULD CUT THE AIR BAG IF DEPLOYED CAUSING SERIOUS OR FISCAL DAMAGE TO MYSELF OR OTHERS RIDING IN MY TRUCK. IF OTHERS ARE INJURED IN MY TRUCK DUE TO MY DASH PIECES CUTTING MY AIR BAG WILL I BE SUED BECAUSE OF A GM DASH DEFECT? I WOULD ALSO LIKE TO MENTION THE CLEAR PLASTIC IN MY DASH CLUSTER IS CRACKING. YOU TOUCH IT AND IT FALLS APART. WHY?
I AM ONE OF THE MANY THAT HAS A CRACKING DASHBOARD THAT GM HAS REFUSED TO FIX. MINE IS ABOVE THE PASSENGER SIDE AIRBAG. I GOT IN ONE DAY EVERYTHING WAS FINE, THE NEXT DAY GOT IN TO GO AND THERE WAS THE CRACK. VEHICLE WAS NOT MOVING WHEN I NOTICED IT. I HAVE ALWAYS HAD A SUN SHADE IN THE WINDOW WHEN THE TRUCK IS PARKED.
IGNITION LOCK CYLINDER BINDING RECALL IGNITION POSITION GETS STUCK ON START POSITION AND CAN BE A POTENTIAL SAFETY HAZARD . MY VIN ON MY 2011 CHEVY SILVERADO DOEE NOT COME UP AS RECALL BUT ONLY CERTAIN 2011 CHEVY SILVERADOS BUT MINE HAS THE SAME SAFETY HAZARD
I AM ORIGINAL OWNER, PURCHASED NEW 12/30/11, AND VEHICLE HAS ALWAYS BEEN WELL CARED FOR AND MAINTAINED. IT IS A 2011 AND ONLY HAD 52,976 MILES. I NOTICE A GAS ODOR AND GAS DRIPPING UNDERNEATH VEHICLE, WITH A HESITATION IN STARTING VEHICLE. VEHICLE WAS BROUGHT TO WHITEMAN CHEVROLET IN GLENS FALLS, NY. THEIR DIAGNOSIS WAS FUEL…
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I AM ORIGINAL OWNER, PURCHASED NEW 12/30/11, AND VEHICLE HAS ALWAYS BEEN WELL CARED FOR AND MAINTAINED. IT IS A 2011 AND ONLY HAD 52,976 MILES. I NOTICE A GAS ODOR AND GAS DRIPPING UNDERNEATH VEHICLE, WITH A HESITATION IN STARTING VEHICLE. VEHICLE WAS BROUGHT TO WHITEMAN CHEVROLET IN GLENS FALLS, NY. THEIR DIAGNOSIS WAS FUEL PUMP ROTTED AND LEAKING, AND FITTINGS ROTTED INTO PLASTIC LINES. THEY REPLACED FUEL PUMP, LOCK RING, LEVEL SENSOR, AND BOTH LINES OFF PUMP. TOTAL COST WAS $1318.11. THEY STATED THESE PARTS WERE CORRODED FROM WEATHER AND ROAD SALT, AND NOT COVERED BY ANY WARRANTY OR RECALL. I WROTE A COMPLAINT TO GM CHEVROLET CUSTOMER ASSISTANCE CENTER. THEY ASSIGNED A CASE NUMBER 8-3967027450 AND ADVISOR 'DEANNDRA' TO INVESTIGATE. HER INVESTIGATION CONCLUDED THAT THE PARTS THAT WERE REPLACED HAD BEEN CORRODED BY WEATHER AND ROAD SALT IN MY AREA. SHE STATED THERE ARE NO OTHER COMPLAINTS OF THIS NATURE ON FILE TO INDICATE THIS BEING A PROBLEM, SO THIS CASE IS CLOSED.
TAKATA RECALL. MY PICKUP HAS A RECALL NOTICE ON THIS TYPE OF AIRBAG, AND CANNOT GET DEALER OR GM TO FIX. I CALLED THE DEALER TWICE AND GM ONCE. THEY ARE NOT DOING ANYTHING TO FIX MY VEHICLE.
TAKATA RECALL AND ANOTHER ISSUE OF POWER LOSS----- I HAVE TAKEN MY TRUCH TO THE DEALERSHIP TO HAVE THE TAKATA AIR BAGS REPLACES AND THEY TOLD ME THAT THEY DO NOT HAVE THE PARTS TO REPLACE THEM. POWER LOSS: I CAN BE DRIVING AND THE VEHICLE GOES INTO A DRASTIC AND IMMEDIATE POWER REDUCTION. I HAVE NEARLY BEE REAR-ENDED SEVER…
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TAKATA RECALL AND ANOTHER ISSUE OF POWER LOSS----- I HAVE TAKEN MY TRUCH TO THE DEALERSHIP TO HAVE THE TAKATA AIR BAGS REPLACES AND THEY TOLD ME THAT THEY DO NOT HAVE THE PARTS TO REPLACE THEM. POWER LOSS: I CAN BE DRIVING AND THE VEHICLE GOES INTO A DRASTIC AND IMMEDIATE POWER REDUCTION. I HAVE NEARLY BEE REAR-ENDED SEVERAL TIMES AND THE VEHICLE JERKS SUDDENLY THROWING EVERYTHING FORWARD AS THOUGH IT IS NEARLY A SUDDEN STOP. IT WILL NOT DRIVE OVER 20 MPH WHEN THIS HAPPENS. IT WILL NOT RESET UNTIL I PULL OVER, REMOVE, AND REASSEMBLE, THE BATTERY CABLES. THIS HAPPENS DURING, AND FOLLOWING, EVERY RAINY DAY. IT ALSO HAPPENS FOR NO SPECIFIED REASON. IT HAPPENED 3 TIMES IN THE LAST 24 HOURS--NO RAIN AT ALL.
TAKATA RECALL - I HAVE CALLED 5 TO 10 TIMES NOW TO LOCAL DEALERS AND THEY KEEP TELLING ME THAT THEY DON'T HAVE A REPLACEMENT AND THEY DO NOT KNOW WHEN ONE WILL BE AVAILABLE.
TAKATA RECALL- MY VEHICLES STATUS IS STILL INCOMPLETE! NO REPAIRS HAVE BEEN ATTEMPTED AND IT HAS ALMOST BEEN TWO YEARS SINCE THIS RECALL WAS ISSUED! I DEMAND ANSWERS! ALSO THE DASH IS CRACKED ON MY TRUCK IN THE VERY SAME PLACE IT'S CRACKING ON THOUSANDS OF OTHER TRUCKS. THIS NEEDS TO BE RECALLED AS THE PLASTIC CAN INJURE SOME…
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TAKATA RECALL- MY VEHICLES STATUS IS STILL INCOMPLETE! NO REPAIRS HAVE BEEN ATTEMPTED AND IT HAS ALMOST BEEN TWO YEARS SINCE THIS RECALL WAS ISSUED! I DEMAND ANSWERS! ALSO THE DASH IS CRACKED ON MY TRUCK IN THE VERY SAME PLACE IT'S CRACKING ON THOUSANDS OF OTHER TRUCKS. THIS NEEDS TO BE RECALLED AS THE PLASTIC CAN INJURE SOMEONE!
WITHIN 2 DAY, 2 CRACKS APPEARED ON MY DASH. THEY ARE IN THE SAME SPOTS AS OTHERS HAVE COMPLAINED ON THE NET. TOP LEFT CORNER OF PASSENGER AIR BAD TO WINDSHIELD AND BEHIND THE INSTRUMENT CLUSTER TO WINDSHIELD.
Official recalls
421V050000 · Air Bags:frontal:passenger Side:inflator Module
Feb 5, 2021
General Motors, LLC (GM) is recalling certain 2007-2011 Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, Yukon XL, and 2009-2011 Chevrolet Silverado 2500, Silverado 3500, GMC Sierra 2500 and Sierra 3500 vehicles originally sold, or ever registered, in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A." Additionally, GM is recalling certain 2007-2008 Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, Yukon XL vehicles originally sold, or ever registered, in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia or "Zone B." These vehicles are equipped with non-desiccated passenger frontal inflators containing phase-stabilized ammonium nitrate (PSAN) propellant. These inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high temperature cycling.
Consequence & remedy
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants, resulting in serious injury or death.
Remedy: GM will notify owners, and dealers will replace the front passenger air bag inflator with an alternate one, free of charge. Interim letters notifying owners of the safety risk were mailed on February 22, 2021. Second notification letters will be mailed once the remedy is available. Owner notification letters were mailed on March 1, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020; Cadillac customer service at 1-800-458-8006; and GMC customer service at 1-800-462-8782. GM's number for this recall is N212328760.
21V054000 · Air Bags:frontal:passenger Side:inflator Module
Feb 5, 2021
General Motors, LLC (GM) is recalling certain 2014 Cadillac Escalade, Escalade ESV, Chevrolet Silverado 2500, Silverado 3500, Suburban, Tahoe, GMC Sierra 2500, Sierra 3500, Yukon, and Yukon XL vehicles originally sold, or ever registered, in the states of AL, CA, FL, GA, HI, LA, MS, SC, TX, PR, AS, GU, the MP, and VI or "Zone A." Additionally GM is recalling certain 2011-2014 Cadillac Escalade, Escalade ESV, Chevrolet Silverado 2500, Silverado 3500, Suburban, Tahoe, GMC Sierra 2500, Sierra 3500, Yukon, Yukon XL and 2011-2013 Cadillac Escalade EXT, Chevrolet Avalanche, Silverado 1500, and GMC Sierra 1500 vehicles originally sold, or ever registered, in the states of AZ, AR, DE, DC, IL, IN, KS, KY, MD, MO, NE, NV, NJ, NM, NC, OH, OK, PA, TN, VA, and WV or "Zone B." Additionally, GM is recalling certain 2010-2014 Cadillac Escalade, Escalade ESV, Chevrolet Silverado 2500, Silverado 3500, Suburban, Tahoe, GMC Sierra 2500, Sierra 3500, Yukon, and Yukon XL and 2010-2013 Cadillac Escalade EXT, Chevrolet Avalanche, Silverado 1500, and GMC Sierra 1500 vehicles originally sold, or ever registered, in the states of AK, CO, CT, ID, IA, ME, MA, MI, MN, MT, NH, NY, ND, OR, RI, SD, UT, VT, WA, WI, and WY or "Zone C." These vehicles are equipped with non-desiccated passenger frontal inflators containing phase-stabilized ammonium nitrate (PSAN) propellant. These inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high temperature cycling.
Consequence & remedy
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants, resulting in serious injury or death.
Remedy: GM will notify owners, and dealers will replace the front passenger air bag inflator with an alternate one, free of charge. Interim letters notifying owners of the safety risk were mailed on February 25, 2021. Second notification letters will be mailed once the remedy is available. Owner notification letters were mailed to 40 VIN owners on May 11, 2021. A second owner notification letter was mailed to all other owners on January 24, 2022. Owners may contact Chevrolet customer service at 1-800-222-1020; Cadillac customer service at 1-800-458-8006; and GMC customer service at 1-800-462-8782. GM's number for this recall is N212328800.
11V007000 · Suspension:rear:axle:spindle
Jan 6, 2011
GENERAL MOTORS IS RECALLING CERTAIN MODEL YEAR 2011 CADILLAC ESCALADE, ESCALADE ESV, ESCALADE EXT; CHEVROLET AVALANCHE, COLORADO, EXPRESS, SILVERADO, SUBURBAN, TAHOE; AND GMC CANYON, SIERRA, SAVANA, YUKON AND YUKON XL VEHICLES. THE REAR AXLE CROSS PINS WERE NOT PROPERLY HEAT TREATED AND COULD FRACTURE AND BECOME DISPLACED WITHIN THE REAR AXLE. SHOULD THE PIN SHIFT OUT OF POSITION, IT COULD CREATE AN INTERFERENCE CONDITION AND CAUSE THE REAR AXLE TO LOCK.
Consequence & remedy
Consequence: THE DRIVER MAY NOT BE ABLE TO MAINTAIN DIRECTIONAL CONTROL OF THE VEHICLE AND A CRASH COULD OCCUR WITHOUT WARNING.
Remedy: DEALERS WILL INSTALL A NEW REAR AXLE CROSS PIN FREE OF CHARGE. THE SAFETY RECALL BEGAN ON JANUARY 11, 2011. OWNERS MAY CONTACT CADILLAC AT 1-866-982-2339, CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463 AND AT THE OWNER CENTER AT WWW.GMOWNERCENTER.COM.
10V643000 · Suspension:rear:axle:spindle
Dec 17, 2010
GENERAL MOTORS IS RECALLING CERTAIN MODEL YEAR 2011 CADILLAC ESCALADE EXT, CHEVROLET AVALANCHE, SILVERADO LD AND GMC SIERRA LD VEHICLES. THE REAR AXLE CROSS PINS WERE NOT PROPERLY HEAT TREATED AND COULD FRACTURE AND BECOME DISPLACED WITHIN THE REAR AXLE. SHOULD THE PIN SHIFT OUT OF POSITION, IT COULD CREATE AN INTERFERENCE CONDITION AND CAUSE THE REAR AXLE TO LOCK.
Consequence & remedy
Consequence: THE DRIVER MAY NOT BE ABLE TO MAINTAIN DIRECTIONAL CONTROL OF THE VEHICLE AND A CRASH COULD OCCUR WITHOUT WARNING.
Remedy: DEALERS WILL INSTALL A NEW REAR AXLE CROSS PIN FREE OF CHARGE. THE SAFETY RECALL BEGAN ON JANUARY 11, 2011. OWNERS MAY CONTACT CADILLAC AT 1-866-982-2339, CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463 AND AT THE OWNER CENTER AT WWW.GMOWNERCENTER.COM.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
2DP22005 · Pedestrian Alert Sounds
Opened Jan 27, 2023 · Closed Aug 7, 2023
Status: closed (inferred from source dates) · Electrical System:propulsion System
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject matter described in the petition. On June 24, 2023 and as supplemented on June 25, 2023, the petitioner notified NHTSA he was withdrawing his petition. The petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. Based on the petitioner's withdrawal, DP22-005 is closed. Closure of this DP does not represent a determination by NHTSA regarding the subject matter of the petition.
EA21002 · Desiccated Air Bag Inflator Rupture
Opened Sep 17, 2021 · No close date supplied
Status: open (inferred from source dates) · Air Bags:frontal:driver Side:inflator Module; Air Bags:frontal:passenger Side:inflator Module
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.
Additional source detail variants (2)
Air Bags:frontal:driver Side:inflator Module
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.
Air Bags:frontal:passenger Side:inflator Module
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.