Vehicle is remotely being hacked into by [XXX] and buddy's, there are many people connected just do your job and ypu find all the evidence for which you need INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
2011 GMC Sierra 2500
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2011 GMC Sierra 2500 do not stand out strongly from the model-year median of 46.
About this comparison →How this year compares
Owner complaints by model year
Compare all Sierra 2500 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
34 reports with mileage · 29 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 20 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Structure. Review the 11 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 9 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
9 reportsOn or about [XXX], the Transmission Control Module, FAILED, on my 2011GMC Denali 2500 6.6 diesel. It was a KNOWN faulty part .General Motors was aware of the issue years ago. This part should have been deemed a Safety Recall item. Imagine, pulling a trailer down a busy Freeway, with Semi's presence. Module goes out, truck goes i…
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On or about [XXX], the Transmission Control Module, FAILED, on my 2011GMC Denali 2500 6.6 diesel. It was a KNOWN faulty part .General Motors was aware of the issue years ago. This part should have been deemed a Safety Recall item. Imagine, pulling a trailer down a busy Freeway, with Semi's presence. Module goes out, truck goes idle, people hurt or worse. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
My ABS and traction control and stabiltrak and service trailer break system keep going on and off its the most distracting thing i have a video of the chime not stopping. My water in fuel sensor won't go off I have un plugged it and changed it and the filter and when I unplug it it stays On
The contact owns a 2011 GMC Sierra 2500. The contact stated that while starting the vehicle, the vehicle remained in the PARK and failed to shift into DRIVE. The steering wheel was locked preventing the gear shifter from going into gear. The traction control warning light was flashing. The vehicle was taken to the local dealer b…
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The contact owns a 2011 GMC Sierra 2500. The contact stated that while starting the vehicle, the vehicle remained in the PARK and failed to shift into DRIVE. The steering wheel was locked preventing the gear shifter from going into gear. The traction control warning light was flashing. The vehicle was taken to the local dealer but, was not diagnosed or repaired. The manufacturer was not contacted. The approximate failure mileage was 190,000. The VIN was not available.
THE VEHICLE ABRUPTLY CAUGHT FIRE WHILE DRIVING ON FEBRUARY 20TH 2021. THE REASON REMAINS UNKNOWN. PLEASE SEE ATTACHED IMAGES.
FUSE FOR LEFT TURN TRAILER BURNS OUT REPEATEDLY. NO WARNING OR INDICATION IT IS OUT UNTIL SOMEONE PULLS ME OVER OR TELLS ME WHEN STOPPED OR I CHECK. I HAVE THREE DIFFERENT TRAILS AND ALL ARE INVOLVED. THE FUSE WILL AT TIMES, BE BLOWN WITHOUT TRAILER ATTACHED. DEALER CAN'T FIND ISSUE (INTERMITTENT PROBLEM). NEVER KNOW WHE…
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FUSE FOR LEFT TURN TRAILER BURNS OUT REPEATEDLY. NO WARNING OR INDICATION IT IS OUT UNTIL SOMEONE PULLS ME OVER OR TELLS ME WHEN STOPPED OR I CHECK. I HAVE THREE DIFFERENT TRAILS AND ALL ARE INVOLVED. THE FUSE WILL AT TIMES, BE BLOWN WITHOUT TRAILER ATTACHED. DEALER CAN'T FIND ISSUE (INTERMITTENT PROBLEM). NEVER KNOW WHEN FUSE BLOWS UNLESS I CHECK IT OR HOOK UP TRAILER. ALWAYS LEFT TURN TRAILER FUSE. TRUCK DOES HAVE TWO BATTERIES AND IS DIESEL. HAS HAPPENED MANY TIMES, EVER SINCE TRUCK WAS NEW. LAST TIME, JAN3, 2017. SOUNDS SIMILAR TO RECALL 14V407000. MY TRUCK WAS MANUFACTURED DURING TIME PERIOD GIVEN BUT NEVER RECEIVED NOTICE OF ANY KIND.
VEHICLE SPORADICALLY SPONTANEOUSLY LOCKS ALL 4 DOORS WITHIN 10 SECONDS AFTER CLOSING THE DOOR. NO TOUCHING OF REMOTE, NO ACCIDENTALLY HITTING A DOOR SWITCH WHILE EXITING THE VEHICLE. IT HAPPENS WHEN I'M AT THE BACK OF THE TRUCK, OR 10 FEET AWAY. ALWAYS WITHIN 10 TO 15 SECONDS AFTER EXITING. IT MAY SOUND STRANGE, BUT IT HAPPENS M…
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VEHICLE SPORADICALLY SPONTANEOUSLY LOCKS ALL 4 DOORS WITHIN 10 SECONDS AFTER CLOSING THE DOOR. NO TOUCHING OF REMOTE, NO ACCIDENTALLY HITTING A DOOR SWITCH WHILE EXITING THE VEHICLE. IT HAPPENS WHEN I'M AT THE BACK OF THE TRUCK, OR 10 FEET AWAY. ALWAYS WITHIN 10 TO 15 SECONDS AFTER EXITING. IT MAY SOUND STRANGE, BUT IT HAPPENS MORE OFTEN TOWARD THE END OF THE ONSTAR YEARLY CONTRACT. SAFETY CONCERN - I HAVE A 3-YEAR OLD GRANDSON WHO LIKES TO GO WITH ME. WHAT HAPPENS IF I FORGET TO TAKE THE KEYS WITH ME WHILE I'M REFUELING ON A HOT SUMMER DAY AND I HAVEN'T EXTENDED THE ONSTAR CONTRACT? OBVIOUSLY, I'D BREAK A WINDOW IF NECESSARY, BUT THEN I'D HAVE TO BUY ANOTHER WINDOW. IT APPEARS MY VEHICLE IS NOT THE ONLY ONE HAVING THIS PROBLEM. OF COURSE, NO TROUBLE CODES THEREFORE DEALER CAN'T REPAIR, BUT MY DEALER'S SERVICE REP ADMITS IT HAPPENS VERY OFTEN AND NOT LIMITED TO GMC TRUCKS. *TR
VEHICLE EXHIBITED "LOW COOLANT" WARNING IN DIC AFTER GM DEF RECALL WAS PERFORMED. "LOW COOLANT" WARNING RETURNED AFTER MULTIPLE REPAIRS TO THE COOLANT SYSTEM FROM SERVICING DEALER. FAILURE OF COOLANT SYSTEM RESULTED IN A FAILURE OF THE HEAD GASKET AND WATER INTRUSION INTO THE #7 CYLINDER. VEHICLE IS 12 MONTHS OLD AND HAD 15,0…
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VEHICLE EXHIBITED "LOW COOLANT" WARNING IN DIC AFTER GM DEF RECALL WAS PERFORMED. "LOW COOLANT" WARNING RETURNED AFTER MULTIPLE REPAIRS TO THE COOLANT SYSTEM FROM SERVICING DEALER. FAILURE OF COOLANT SYSTEM RESULTED IN A FAILURE OF THE HEAD GASKET AND WATER INTRUSION INTO THE #7 CYLINDER. VEHICLE IS 12 MONTHS OLD AND HAD 15,000 MILES AT THE TIME OF FAILURE. VEHICLE ALSO EXHIBITED MULTIPLE ELECTRICAL SYSTEM FAILURES INCLUDING: DEAD BATTERY NO START CONDITION MULTIPLE TIMES TRAILER BRAKE SYSTEM FAILURE ENGINE HOUR METER FAILURE INTERMITTENT ELECTRICAL FAILURES FROM DOOR LOCKS, LIGHTS, RADIO. SELLING DEALER RECALIBRATED ECM TWICE, BUT ELECTRICAL ISSUES ARE STILL PRESENT. *TR
WE PURCHASED 24 2011 GMC 2500 TRUCKS WITH OMAHA UTILITY BODIES. ABOUT 1 MONTH AFTER PUTTING THE UNITS IN SERVICE WE HAD A FAILURE OF THE MODULE THAT OPERATES THE REAR BRAKE/TAIL/TURN LIGHTS. IT HAD NO LEFT TURN LIGHT,AND THE RIGHT TURN OPERATED WITH THE TURN SWITCH SET TO LEFT OR RIGHT. WE REMOVED THE MODULE (INSTALLED BY PALFLE…
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WE PURCHASED 24 2011 GMC 2500 TRUCKS WITH OMAHA UTILITY BODIES. ABOUT 1 MONTH AFTER PUTTING THE UNITS IN SERVICE WE HAD A FAILURE OF THE MODULE THAT OPERATES THE REAR BRAKE/TAIL/TURN LIGHTS. IT HAD NO LEFT TURN LIGHT,AND THE RIGHT TURN OPERATED WITH THE TURN SWITCH SET TO LEFT OR RIGHT. WE REMOVED THE MODULE (INSTALLED BY PALFLEET) FROM ANOTHER VEHICLE AND INSTALLED IT ON THE ONE WITH THE PROBLEM. THAT CORRECTED THAT UNIT.SINCE THAT TIME WE HAVE HAD 6 MORE UNITS THAT HAVE FAILED IN A SIMILAR MANNER,BUT VARIED LIGHTS TO INCLUDE RIGHT/LEFT TURN AND BRAKE LIGHTS.WITH ANY OF THESE LIGHT INOPERATIVE,THE VEHICLES ARE NOT IN COMPLIANCE WITH FMVSS 108, OR ANY OPERATIONAL STANDARD.NOW PALFLEET WANTS TO SELL US NEW LIGHTS TO CURE THE PROBLEM.TEXT OF THEIR EMAIL FOLLOWS:[XXX], IN UNDERSTANDING FROM KEN PITTS IN SERVICE AND JOHN PANNELL IN OUR MATERIALS DEPARTMENT THAT SOME OF THE MULTIPLE SERVICE BODY UNITS WE INSTALLED A FEW MONTHS BACK HAVE HAD ELECTRICAL ISSUES WITH THE REAR TAILLIGHTS SPECIFICALLY,WE WERE HOPING TO PROVIDE YOU WITH INFORMATION. IN THE EARLY STAGES OF THE FSA (FLORIDA SHERRIFF'S ASSOCIATION FOR THE STATE OF FLORIDA) BID PROCESS FOR THESE UNITS THAT DATES BACK TO 2010, WE WORKED UP THE BID PRICE BASED ON THE STANDARD LIGHT KIT PACKAGE.PER MY UNDERSTANDING FOR FORD AND DODGE TRUCKS THE STANDARD INCANDESCENT TYPE BULB/LIGHT WORKS PROPERLY.IN THE CASE OF GM TRUCKS, DUE TO A DIFFERENT OEM WIRING HARNESS AND CERTAIN ELECTRICAL AMP-DRAW CRITERIA,THE STANDARD INCANDESCENT BULB CAN SOMETIMES OVERHEAT CAUSING FAILURE.THE RECOMMENDED CORRECTION IS TO UPGRADE THE TWO RED TURN/STOP LIGHTS TO LED WHICH,AGAIN PER MY UNDERSTANDING, WITHSTAND THE HEAT BUILDUP CAUSED BY THE GM HARNESS.WE WILL BE GLAD TO SEND YOU THE REPLACEMENT RED LIGHTS IF YOU WOULD LIKE TO PURSUE AND ANY OF THE CIRCUIT BOARDS (IF NEEDED) AT OUR COST PLUS UPS SHIPPING.THE COST WOULD BE AS SHOWN:RED STOP/TURN LIGHT - $18.00 CIRCUIT BOARD - $49.00 INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).*KB
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.
18V267000 · Equipment
Apr 26, 2018
General Motors LLC (GM) is recalling certain 2009-2014 Chevrolet Silverado HD and GMC Sierra HD, 2009 GMC Topkick 5000, 6000, 7000 and 8000 Series and Isuzu F Series, and 2009-2018 Chevrolet Express, and GMC Savana vehicles, equipped with certain Plastic-Handle Fire Extinguishers or Push Button 'Pindicator' Fire Extinguishers. These extinguishers may become clogged, preventing the extinguisher from discharging as expected or requiring excessive force to activate the extinguisher. Additionally, in certain models, the nozzle may detach from the valve assembly with enough force that it could cause injury and also render the product inoperable. For a full list of the affected fire extinguisher models visit: https://static.nhtsa.gov/odi/rcl/2017/RMISC-17E062-5427.pdf
Consequence & remedy
Consequence: In the event of a fire, if the fire extinguisher does not function properly, it can increase the risk of injury.
Remedy: GM will notify owners, instructing them to contact Kidde to get a replacement fire extinguisher, free of charge. The recall began June 11, 2018. Owners may contact Chevrolet customer service at 1-800-222-1020, GMC customer service at 1-800-462-8782, and Isuzu customer service at 1-866-441-9638. GM's number for this recall is 18146.
14V407000 · Electrical System
Jul 2, 2014
General Motors LLC (GM) is recalling certain model year 2007-2011 Chevrolet Silverado HD 2500/3500 trucks manufactured January 18, 2007, to June 22, 2011, and GMC Sierra HD 2500/3500 trucks manufactured January 22, 2007, to June 21, 2011, and equipped with an auxiliary battery. Owners may unknowingly draw too much current through the vehicle's trailer harness resulting in the melting of fusible link for the auxiliary battery.
Consequence & remedy
Consequence: If the fusible link melts it may come into contact with adjacent components, damage the electrical center cover, the nearby wiring harness conduit and other vehicle components, increasing the risk of a fire.
Remedy: GM will notify owners and dealers will replace the jumper harness with one that includes a 40 amp inline fuse, and provide the owner with supplemental Owner Manual information, free of charge. The recall began on August 29, 2014. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is 14260.
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
1EA21002 · 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.
Illustration