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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 →

When problems were reported

Mileage at the reported incident

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

Power Train complaints

17 reports
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Mileage unknown · Dec 18, 2024
Power Train

My transmission failed and my truck wouldn’t move. I’ve replaced it with a rebuilt one which is already shifting hard and shuddering. These 6l80e transmissions are no good

NHTSA ODI #11631441

110,000 miles · Aug 25, 2023
Power TrainStructure

The contact owns a 2011 Chevrolet Silverado 1500. The contact stated while driving at an undisclosed speed, the vehicle stalled without warning. No warning lights were illuminated. The vehicle was towed to the residence and then towed to a transmission specialist to be diagnosed. The contact was informed that the transmission ne…

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The contact owns a 2011 Chevrolet Silverado 1500. The contact stated while driving at an undisclosed speed, the vehicle stalled without warning. No warning lights were illuminated. The vehicle was towed to the residence and then towed to a transmission specialist to be diagnosed. The contact was informed that the transmission needed to be replaced; however, the contact was informed by the technician that the vehicle could not be repaired due to a rusted subframe that needed to first be replaced. The vehicle was not repaired. The dealer was notified of the failure and the contact was provided information on how to independently repair a subframe, but no further assistance was provided. The manufacturer was not notified of the failure. The failure mileage was approximately 112,000.

NHTSA ODI #11540764

200,000 miles · Dec 8, 2020
EnginePower Train

THESE VEHICLES HAVE AN ISSUE WITH THE CAM. I'M ON MY SECOND 5.3 ENGINE AND I'M BEING TOLD BY A GM CERTIFIED TECH THAT IT'S NORMAL FOR THESE ENGINES TO HAVE CAM ISSUES AFTER 100K.

NHTSA ODI #11378563

100,000 miles · Jan 15, 2019
Air BagsPower Train

AIR BAG LIGHT IS ON. THIS IS PROMPTING ME TO THINK THAT THIS IS RELATED TO THE TAKATA RECALL. MY 2011 SILVERADO HAS LESS THAN 100,00 MILES. THE TRANSMISSION STARTED MAKING NOISES, THEN IT STOPPED. PRIOR TO THAT NOTHING WAS INDICATED AS GOING WRONG. ONE MONTH LATER, THE TRANSMISSION WILL NOT MOVE INTO GEARS. I HAVE SPENT THOUS…

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AIR BAG LIGHT IS ON. THIS IS PROMPTING ME TO THINK THAT THIS IS RELATED TO THE TAKATA RECALL. MY 2011 SILVERADO HAS LESS THAN 100,00 MILES. THE TRANSMISSION STARTED MAKING NOISES, THEN IT STOPPED. PRIOR TO THAT NOTHING WAS INDICATED AS GOING WRONG. ONE MONTH LATER, THE TRANSMISSION WILL NOT MOVE INTO GEARS. I HAVE SPENT THOUSANDS OF DOLLARS TO PURCHASE THIS VEHICLE BRAND NEW AND I AM SO DISAPPOINTED IN THE SERVICE THAT I AM GETTING OUT OF IT.ALSO THE INTERIOR IS DETERIORATING. MY RADIO DIALS AND HEAT/AIR CONTROL BUTTONS ARE FADED. THE STEERING WHEEL IS PEELING. I EVEN BOUGHT EXTENDED WARRANTY. MY POWER WINDOW WENT OUT, FIXED BY WARRANTY. THIS TRUCK HAS TOO MANY DEFECTS AND I AM SEEKING SOME ANSWERS AND ASSISTING IN CORRECTING THESE PROBLEMS.

NHTSA ODI #11170096

Mileage unknown · Jul 28, 2017
Power Train

ELKINS CHEVROLET OF MARLTON, NJ REFUSES TO COVER SERVICE FOR AN ITEM THAT WAS RECALLED. THE DEALERSHIP CLAIMS TO HAVE ALREADY RECALLED THE VEHICLE AND MITIGATED THE ISSUE BY INSTALLING A STYROFOAM TUBE AROUND THE PART IN QUESTION. HOWEVER, IF THE TUBE WAS INSTALLED IT FAILED AND THE TRANSMISSION MAY BE AFFECTED. I AM CURRENTLY…

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ELKINS CHEVROLET OF MARLTON, NJ REFUSES TO COVER SERVICE FOR AN ITEM THAT WAS RECALLED. THE DEALERSHIP CLAIMS TO HAVE ALREADY RECALLED THE VEHICLE AND MITIGATED THE ISSUE BY INSTALLING A STYROFOAM TUBE AROUND THE PART IN QUESTION. HOWEVER, IF THE TUBE WAS INSTALLED IT FAILED AND THE TRANSMISSION MAY BE AFFECTED. I AM CURRENTLY LEFT TO COVER THE COST OF THIS WHILE THE DEALERSHIP REFUSES TO ACKNOWLEDGE THE ISSUE DESPITE THE RECALL.

NHTSA ODI #11011294

83,500 miles · Feb 11, 2017
EngineFuel/propulsion SystemPower Train

ENGINE POWER REDUCED, SERVICE TRACTION CONTROL, SERVICE STABILITRAK, THESE WARNING LIGHTS CAME ON AND AS MY TRUCK SLOWED DOWN NO MATTER HOW MUCH GAS I GAVE IT. ALSO THE CHECK ENGINE LIGHT CAME ON. I SHUT TRUCK OFF AND WAITED A COUPLE MINUTES THEN STARTED TRUCK UP . IT RAN FOR A FEW MINUTES THEN THE SAME 3 WARNING LIGHTS CAME O…

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ENGINE POWER REDUCED, SERVICE TRACTION CONTROL, SERVICE STABILITRAK, THESE WARNING LIGHTS CAME ON AND AS MY TRUCK SLOWED DOWN NO MATTER HOW MUCH GAS I GAVE IT. ALSO THE CHECK ENGINE LIGHT CAME ON. I SHUT TRUCK OFF AND WAITED A COUPLE MINUTES THEN STARTED TRUCK UP . IT RAN FOR A FEW MINUTES THEN THE SAME 3 WARNING LIGHTS CAME ON ALONG WITH THE CHECK ENGINE. LIGHT. IS THERE A RECALL OR A TECHNICAL SERVICE BULLETIN (TSB) FOR THIS ISSUE. I DID READ THAT THERE MIGHT BE A TSB CAMPAIGN # [XXX] FOR THIS ISSUE. IS THERE ANY PAPERWORK THAT CAN BE EMAILED TO ME TO GIVE TO THE GM DEALER TO HELP ME WITH THIS ISSUE. THE VEHICLE WAS IN MOTION THE FIRST TIME IT HAPPENED. IT ALSO HAPPENS WHILE PARKED IN DRIVEWAY AND JUST WARMING UP TRUCK . THANK YOU, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

NHTSA ODI #10953991

Mileage unknown · Dec 6, 2016
Air BagsEnginePower Train

TL* TAKATA RECALL. THE CONTACT OWNS A 2011 CHEVROLET SILVERADO 1500. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 16V381000 (AIR BAGS). THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS NOT MADE AWAR…

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TL* TAKATA RECALL. THE CONTACT OWNS A 2011 CHEVROLET SILVERADO 1500. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 16V381000 (AIR BAGS). THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE. UPDATED 01/25/17*LJ CONSUMER STATED TRUCK/ENGINE RUNNING ROUGH. INTERMITTENT LOUD THUMP SOUND WHEN TRANSMISSION ENGAGES. UPDATED 7/16/18*JB

NHTSA ODI #10930157

80,000 miles · Jul 15, 2016
Power Train

WHEN SLOWING FOR A RED LIGHT OR STOP SIGN THERE IS A NOISE LIKE BAD BREAK PADS SWOOSHING AS THOUGH INTERMITTENT CONTACT IS BEING MADE. BRAKES ,PADS,HUBS ,SEALS AND ROTORS INSPECTED BY CERT. MECH. SOUND APPEARS TO COME FROM UNDER CENTER OF UNDERCARRIAGE IN VICINITY OF TRANSMISSION TAIL SHAFT. I HAVE HAD 3 OR 4 INCIDENTS WHEN PUTT…

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WHEN SLOWING FOR A RED LIGHT OR STOP SIGN THERE IS A NOISE LIKE BAD BREAK PADS SWOOSHING AS THOUGH INTERMITTENT CONTACT IS BEING MADE. BRAKES ,PADS,HUBS ,SEALS AND ROTORS INSPECTED BY CERT. MECH. SOUND APPEARS TO COME FROM UNDER CENTER OF UNDERCARRIAGE IN VICINITY OF TRANSMISSION TAIL SHAFT. I HAVE HAD 3 OR 4 INCIDENTS WHEN PUTTING TRUCK IN GEAR IT JERKS BACKWARDS ENOUGH TO FEEL IT. THIS TRUCK HAS ONLY 80,000 MI AND I LOVE TO DRIVE IT HOWEVER THESE NOISES MAKE ME FEEL LIKE I MIGHT BE FACING SERIOUS TROUBLE AND GREAT EXPENSE DOWN THE ROAD.I HAVE AN APPT. THE 20TH WITH THE DEALERSHIP WHERE I PURCHASED THE TRUCK .DOES ANYONE RECOGNIZE THESE SYMPTOMS IF SO I WOULD APPRECIATE HEARING FROM YOU. MY E-MAIL IS JLINT@SCIOTOCOUNTY.NET.

NHTSA ODI #10884990

72,000 miles · Dec 9, 2014
Power TrainService Brakes

TL* THE CONTACT OWNS A 2011 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHEN ATTEMPTING TO STOP THE VEHICLE, THERE WAS A VIBRATION COMING FROM THE BRAKES. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC, WHO DIAGNOSED THAT THE REAR DRIVERS SIDE DRUM DETERIORATED AND THE BRAKE SPRING WAS FRACTURED. THE MECHANIC REPLACED TH…

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TL* THE CONTACT OWNS A 2011 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHEN ATTEMPTING TO STOP THE VEHICLE, THERE WAS A VIBRATION COMING FROM THE BRAKES. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC, WHO DIAGNOSED THAT THE REAR DRIVERS SIDE DRUM DETERIORATED AND THE BRAKE SPRING WAS FRACTURED. THE MECHANIC REPLACED THE FRONT ROTORS, THE FRONT PADS, THE REAR DRUMS, THE REAR BRAKE SHOES AND THE SPRING KIT. ADDITIONALLY, THE CONTACT STATED THAT WHILE DRIVING AT 65 MPH, THE RPMS INCREASED AND THE VEHICLE FAILED TO SHIFT INTO OVERDRIVE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 72,000.

NHTSA ODI #10663063

200 miles · Jan 24, 2013
Power TrainSuspension

TL* THE CONTACT OWNS A 2011 CHEVROLET SILVERADO 1500. THE CONTACT STATED WHEN HE PUT THE VEHICLE IN GEAR IT MADE A VERY LOUD CLANGING SOUND. THE VEHICLE WAS TAKEN TO A DEALER FOR DIAGNOSTIC TESTING AND WAS TOLD THAT WAS NORMAL SINCE ALL OF THE NEW GM VEHICLES MADE THAT NOISE. THE FAILURE RECURRED REPEATEDLY BECAME PROGRESSIVELY…

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TL* THE CONTACT OWNS A 2011 CHEVROLET SILVERADO 1500. THE CONTACT STATED WHEN HE PUT THE VEHICLE IN GEAR IT MADE A VERY LOUD CLANGING SOUND. THE VEHICLE WAS TAKEN TO A DEALER FOR DIAGNOSTIC TESTING AND WAS TOLD THAT WAS NORMAL SINCE ALL OF THE NEW GM VEHICLES MADE THAT NOISE. THE FAILURE RECURRED REPEATEDLY BECAME PROGRESSIVELY WORSE OVER TIME. THE CONTACT ALSO STATED THAT THE FRAME AND SUSPENSION HAD EXTENSIVE RUST ON IT. THE DEALER ADVISED THE CONTACT THAT THE RUST WAS NOT A PROBLEM. THE MANUFACTURER WAS NOTIFIED OF BOTH FAILURES BUT OFFERED NO ASSISTANCE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 200 AND THE CURRENT MILEAGE WAS 40,000.

NHTSA ODI #10494589

Official recalls

4

21V050000 · 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

2

DP22005 · 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.