IllustrationHave replaced all brakes, rotors, calipers, brake booster, master cylinder, and checked for leaks. Still have no pressure when applying brakes.
2013 Chevrolet Tahoe
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2013 Chevrolet Tahoe do not stand out strongly from the model-year median of 246.
About this comparison →How this year compares
Owner complaints by model year
Compare all Tahoe 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
140–25K
4325–50K
5050–75K
3075–100K
21100–150K
4150K+
162 reports with mileage · 70 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.
- Structure. Review the 56 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Air Bags. Review the 51 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 16 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
4 crash reports0 fire reports2 injury reports
Service Brakes complaints
6 reportsJULY 16TH, 2019 MY 2013 CHEVROLET TAHOE LTZ WAS INVOLVED IN AN ACCIDENT OF TOTAL LOSS. TRAVEL SPEEDS WERE 30 MPH. IN ATTEMPTS TO STOP DUE TO VEHICLES TRAVELING IN FRONT OF MINE HAD COME TO ABRUPT STOPS MY BRAKES FAILED TO PROVIDE ADEQUATE STOPPING WHILE STRAIGHT LINE STEERING. THUS I WAS FORCED TO STEER LEFT TO AVOID COLLISION. …
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JULY 16TH, 2019 MY 2013 CHEVROLET TAHOE LTZ WAS INVOLVED IN AN ACCIDENT OF TOTAL LOSS. TRAVEL SPEEDS WERE 30 MPH. IN ATTEMPTS TO STOP DUE TO VEHICLES TRAVELING IN FRONT OF MINE HAD COME TO ABRUPT STOPS MY BRAKES FAILED TO PROVIDE ADEQUATE STOPPING WHILE STRAIGHT LINE STEERING. THUS I WAS FORCED TO STEER LEFT TO AVOID COLLISION. MY BRAKES WERE QUICKLY APPLIED, MODERATE BRAKE PEDAL TRAVEL, BRAKES WERE SLOW TO RESPOND WITH MINIMAL BRAKING. THERE WAS COLLISION WITH THE VEHICLE IN FRONT OF ME, CLIPPING THEIR DRIVER SIDE REAR BUMPER TO MY PASSENGER SIDE FRONT CORNER FENDER PEALING IT BACK LIKE A CAN OPENER. THIS HAPPENED ON A STATE HWY. THE STABILITRAC INDICATOR AND SERVICE BRAKES HAD APPEARED ON AND OFF IN THE VEHICLES DIC INTERMITTENTLY OVER THE PAST MONTH. NO CODES PRESENT. THE VEHICLE HAD NEW BRAKES (ROTORS, PADS AND BRAKE FLUID), 43 DAYS PRIOR. IT HAD 138,627 MILES ON THE VEHICLE. 1) WE ARE LUCKY THERE WERE NO INJURIES RESULTING FROM THIS ACCIDENT. 2) FOR A VEHICLE THAT WAS PURCHASED FOR $61K AND PAID OFF, 6 YEARS LATER LOSSES 2/3 OF ITS PURCHASED VALUE. 3) HAVE NOW HAD TO PURCHASE A NEW VEHICLE AND BACK TO BEING $20K IN THE HOLE. I BELIEVE THAT THIS PROBLEM IS A DIRECT RESULT FROM THE CURRENT RECALL GM JUST ANNOUNCED THAT COVERS 2014-2018 CHEVROLET SUBURBAN AND TAHOE MODELS. GM STATES AS THE VEHICLE AGES, THE PUMP IN THE POWER-ASSIST BRAKES CAN PUT OUT LESS VACUUM THAN NEEDED, INCREASING STOPPING DISTANCE AND RICK OF A CRASH. NHTSA CAMPAIGN NUMBER: 19V645
1- EVERY TIME I APPLY MY BRAKES, THEY VIBRATE, SPEED DOESN'T MATTER, I HAVE BEEN COMPLAINING TO MY HUSBAND ABOUT THIS FOR ABOUT 1 YEAR. 2- SOMETIMES WHEN I APPLY MY BRAKES THEN RELEASE THEM A LITTLE AND REAPPLY THE 2ND TIME IT FEELS LIKE I AM PRESSING AGAINST A BRICK WALL AND CAN'T PUSH THE BRAKES. I NOTICE THIS WHEN I AM GOIN…
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1- EVERY TIME I APPLY MY BRAKES, THEY VIBRATE, SPEED DOESN'T MATTER, I HAVE BEEN COMPLAINING TO MY HUSBAND ABOUT THIS FOR ABOUT 1 YEAR. 2- SOMETIMES WHEN I APPLY MY BRAKES THEN RELEASE THEM A LITTLE AND REAPPLY THE 2ND TIME IT FEELS LIKE I AM PRESSING AGAINST A BRICK WALL AND CAN'T PUSH THE BRAKES. I NOTICE THIS WHEN I AM GOING SUPER SLOW, PARKING LOT, STOP AND GO TRAFFIC, ETC.
TRACTION CONTROL AND STABILITY TRAK LIGHTS COME ON WHILE DRIVING, COMMON PROBLEM WITH ALOT CHEVROLET TRUCKS SUV AND CARS. I HAD 2005 TAHOE PREVIOUSLY AND THE SAME PROBLEM WAS OCCURRING.
MY 2013 CHEVROLET LTZ TAHOE BEGAN EXPERIENCING INTERMITTENT WARNINGS THAT THE ABS AND TRACTION CONTROL SYSTEMS WERE OFF AT AROUND 60K MILES. BY THE TIME THE VEHICLE TIT 65K THE FAILURES BECAME REGULAR AND ARE NOW LIT CONSTANTLY. THESE ARE SAFETY FEATURES THAT SAFEGUARD THE OPERATOR AND PASSENGERS DURING HARD/EMERGENCY BRAKING O…
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MY 2013 CHEVROLET LTZ TAHOE BEGAN EXPERIENCING INTERMITTENT WARNINGS THAT THE ABS AND TRACTION CONTROL SYSTEMS WERE OFF AT AROUND 60K MILES. BY THE TIME THE VEHICLE TIT 65K THE FAILURES BECAME REGULAR AND ARE NOW LIT CONSTANTLY. THESE ARE SAFETY FEATURES THAT SAFEGUARD THE OPERATOR AND PASSENGERS DURING HARD/EMERGENCY BRAKING OR DURING WEATHER WITH SNOW, ICE AND RAIN. THESE KEY SAFETY SYSTEMS NOW ARE NON FUNCTIONING AND THE VEHICLE IS RATHER UNSAFE WITHOUT THEM. THIS IS A $70+ K VEHICLE AND IT HAS KEY SAFETY FEATURES FAILING VERY EARLY INTO ITS LIFE. IT IS UNBELIVABLE THAT CHEVROLET IS NOT HELD TO ACCOUNT BY FEDERAL REGULATORS FOR SUCH SIGNIFICANT SAFETY FAILURES. HOW MANY TAHOES ARE IN SERIOUS ACCIDENTS EACH YEAR DUE TO LOSS OF ABS BRAKING AND TRACTION CONTROL LOSS?
AT FREEWAY SPEEDS THE DIC MESSAGE TO SERVICE BRAKES SOON APPEARS. WHILE THIS OCCURRED PERHAPS 2 OR 3 TIMES DURING A 30 MILE DRIVE ORIGINALLY, NOW IT ONLY APPEARS PERHAPS ONCE EVERY 300 MILES. CAN BE CLEARED BY RESET BUTTON IN CONTROL PANEL. DEALER UNABLE TO TRACE FAULT EVEN AFTER SHOWN MESSAGE ON DASH. FRONT DOORS DO NOT DRAI…
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AT FREEWAY SPEEDS THE DIC MESSAGE TO SERVICE BRAKES SOON APPEARS. WHILE THIS OCCURRED PERHAPS 2 OR 3 TIMES DURING A 30 MILE DRIVE ORIGINALLY, NOW IT ONLY APPEARS PERHAPS ONCE EVERY 300 MILES. CAN BE CLEARED BY RESET BUTTON IN CONTROL PANEL. DEALER UNABLE TO TRACE FAULT EVEN AFTER SHOWN MESSAGE ON DASH. FRONT DOORS DO NOT DRAIN WATER PROPERLY - SURE TO LEAD TO PREMATURE RUST-OUT OF LOWER PANELS. *TR
Official recalls
421V053000 · Air Bags:frontal:passenger Side:inflator Module
Feb 5, 2021
General Motors, LLC (GM) is recalling certain 2013 Cadillac Escalade, Escalade ESV, and Escalade EXT, Chevrolet Avalanche, Silverado 1500, Silverado 2500/3500, Suburban, Tahoe, GMC Sierra 1500, Sierra 2500/3500, Yukon, and Yukon XL 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 2010 Cadillac Escalade, Escalade ESV, and Escalade EXT, Chevrolet Avalanche, Silverado 1500, Silverado 2500/3500, Suburban, Tahoe, GMC Sierra 1500, Sierra 2500/3500, Yukon, and 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." Additionally, GM is recalling certain 2009 Cadillac Escalade, Escalade ESV, and Escalade EXT, Chevrolet Avalanche, Silverado 1500, Silverado 2500/3500, Suburban, Tahoe, GMC Sierra 1500, Sierra 2500/3500, Yukon, and Yukon XL vehicles originally sold, or ever registered, in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming or "Zone C."
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 24, 2021. Second notification letters will be mailed once the remedy is available. Owner notification letters were mailed on May 11, 2021. Owners may contact Cadillac customer service at 1-800-458-8006; Chevrolet customer service at 1-800-222-1020; and GMC customer service at 1-800-462-8782. GM's number for this recall is N212328790.
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.
14V614000 · Electrical System
Oct 1, 2014
General Motors LLC (GM) is recalling certain model year 2013-2014 Cadillac CTS, Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, GMC Yukon, and Yukon XL, and 2014 Buick Enclave, Chevrolet Express, Impala, Silverado HD, Traverse, GMC Acadia, Savana, and Sierra HD vehicles. In the affected vehicles, the chassis electronic module may be internally contaminated, resulting in an electrical short.
Consequence & remedy
Consequence: If the module experiences an electrical short, the vehicle could stall, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will replace the chassis electronic module, free of charge. The recall began on December 26, 2014. Owners may contact GM customer service at 1-800-521-7300 (Buick), 1-800-458-006 (Cadillac), 1-800-222-1020 (Chevrolet), and 1-800-462-8782 (GMC). GMs number for this recall is 14515.
13V001000 · Power Train:automatic Transmission; Steering:column LOCKING:ANTI-THEFT Device
Jan 2, 2013
General Motors (GM) is recalling certain model year 2013 Cadillac Escalade, Escalade ESV, and Escalade EXT; Chevrolet Avalanche, Express, Silverado HD, Silverado LD, Suburban, and Tahoe; and GMC Savana, Sierra HD, Sierra LD, Yukon, and Yukon XL vehicles, manufactured between November 7, 2012, through December 18, 2012, for failing to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 102, "Transmission Shift Lever Sequence, Starter Interlock, and Transmission Braking Effect", and FMVSS No. 114, "Theft Protection and Rollaway Prevention." The vehicles may have been built with a fractured park lock cable or a malformed steering column lock actuator gear in the lock module assembly.
Consequence & remedy
Consequence: As a result, the vehicle may shift from Park with the ignition key removed or the ignition key in the OFF position. The vehicle may also shift out of Park without application of the brake pedal while the key is off. Either of these scenarios may cause the vehicle to roll away after the driver has exited the vehicle, resulting in a possible vehicle crash and/or injury.
Remedy: GM will notify owners, and dealers will inspect the affected vehicles and replace the steering column as necessary, free of charge. The recall began on January 21, 2013. Chevrolet owners may call 1-800-630-2438. Cadillac owners may call 1-866-982-2339. GMC owners may call 1-866-996-9463.
Additional source detail variants (2)
Power Train:automatic Transmission
General Motors (GM) is recalling certain model year 2013 Cadillac Escalade, Escalade ESV, and Escalade EXT; Chevrolet Avalanche, Express, Silverado HD, Silverado LD, Suburban, and Tahoe; and GMC Savana, Sierra HD, Sierra LD, Yukon, and Yukon XL vehicles, manufactured between November 7, 2012, through December 18, 2012, for failing to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 102, "Transmission Shift Lever Sequence, Starter Interlock, and Transmission Braking Effect", and FMVSS No. 114, "Theft Protection and Rollaway Prevention." The vehicles may have been built with a fractured park lock cable or a malformed steering column lock actuator gear in the lock module assembly.
Consequence: As a result, the vehicle may shift from Park with the ignition key removed or the ignition key in the OFF position. The vehicle may also shift out of Park without application of the brake pedal while the key is off. Either of these scenarios may cause the vehicle to roll away after the driver has exited the vehicle, resulting in a possible vehicle crash and/or injury.
Remedy: GM will notify owners, and dealers will inspect the affected vehicles and replace the steering column as necessary, free of charge. The recall began on January 21, 2013. Chevrolet owners may call 1-800-630-2438. Cadillac owners may call 1-866-982-2339. GMC owners may call 1-866-996-9463.
Steering:column LOCKING:ANTI-THEFT Device
General Motors (GM) is recalling certain model year 2013 Cadillac Escalade, Escalade ESV, and Escalade EXT; Chevrolet Avalanche, Express, Silverado HD, Silverado LD, Suburban, and Tahoe; and GMC Savana, Sierra HD, Sierra LD, Yukon, and Yukon XL vehicles, manufactured between November 7, 2012, through December 18, 2012, for failing to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 102, "Transmission Shift Lever Sequence, Starter Interlock, and Transmission Braking Effect", and FMVSS No. 114, "Theft Protection and Rollaway Prevention." The vehicles may have been built with a fractured park lock cable or a malformed steering column lock actuator gear in the lock module assembly.
Consequence: As a result, the vehicle may shift from Park with the ignition key removed or the ignition key in the OFF position. The vehicle may also shift out of Park without application of the brake pedal while the key is off. Either of these scenarios may cause the vehicle to roll away after the driver has exited the vehicle, resulting in a possible vehicle crash and/or injury.
Remedy: GM will notify owners, and dealers will inspect the affected vehicles and replace the steering column as necessary, free of charge. The recall began on January 21, 2013. Chevrolet owners may call 1-800-630-2438. Cadillac owners may call 1-866-982-2339. GMC owners may call 1-866-996-9463.
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.