← New search

2013 GMC Sierra 1500

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2013 GMC Sierra 1500 do not stand out strongly from the model-year median of 181.

About this comparison →

How this year compares

Owner complaints by model year

Compare all Sierra 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

67 reports with mileage · 48 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 35 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Structure. Review the 25 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Suspension. Review the 10 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

2 crash reports1 fire reports3 injury reports

Engine complaints

8 reports
Clear category filter
Mileage unknown · Sep 14, 2025
Engine

On 9-12-25 I was pulling a utility trailer when I went to back it in the driveway my 2013 gmc 1500 5.3 stalled . I restarted it only to have a lifter claddering !!!! I checked the oil it was good ! Oil pressure was good not over heating . It is just the lifter!!!!!! After doing some investigating I found that this is a common pr…

Read full complaint

On 9-12-25 I was pulling a utility trailer when I went to back it in the driveway my 2013 gmc 1500 5.3 stalled . I restarted it only to have a lifter claddering !!!! I checked the oil it was good ! Oil pressure was good not over heating . It is just the lifter!!!!!! After doing some investigating I found that this is a common problem with GM's 5.3 with the AFM system!!! Companies should be held accountable for fraudulent designs!!! This is Not the first time for GM screwing consumers!!! GM had a similar situation back in the 70s and 80s Cadillac!!!! I bought this truck from a GM Dealer with 67000 miles only drove it in 1 winter it now has 149900 miles!!!! 5 years !!! Change oil and filter every 3000-4000 miles ,use Mobile 5w- 30w !!!! I feel a recall should be made to hold GM Accountable for what they new was a problem but produced and Screwed consumers to make SALES !!!!!!!!!!!!! Ask any quality Repair facility that works on GM'S or Even Auto Parts personal. When it stalled it left me in the middle of the Road with traffic!!! Even if it did start right back up !! Clacking!! The cost is unbearable!!!!!!

NHTSA ODI #11687166

140,000 miles · Oct 5, 2023
Engine

The contact owns a 2013 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, while making a left turn, the accelerator pedal was depressed and there was a ticking sound coming from under the hood of the vehicle. The check engine warning light was illuminated. The vehicle was taken to the dealer where it was…

Read full complaint

The contact owns a 2013 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, while making a left turn, the accelerator pedal was depressed and there was a ticking sound coming from under the hood of the vehicle. The check engine warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed and determined that the engine needed to be replaced. The vehicle was being repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 140,000.

NHTSA ODI #11548370

Mileage unknown · Mar 12, 2023
Engine

Defective springs for lifters, the fuel management lifter springs have broken. The engine is missing and will barely idling.

NHTSA ODI #11511478

163,000 miles · Mar 10, 2023
Engine

The contact owns a 2013 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, he heard a rattling sound coming from the hood. The check engine warning light was illuminated; however, the vehicle was taken to an independent mechanic where it was diagnosed with faulty piston rings. The contact was informe…

Read full complaint

The contact owns a 2013 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, he heard a rattling sound coming from the hood. The check engine warning light was illuminated; however, the vehicle was taken to an independent mechanic where it was diagnosed with faulty piston rings. The contact was informed that the engine needed to be replaced. The contact then stated that the instrument panel light was deactivated. The vehicle was not repaired. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 163,000.

NHTSA ODI #11511214

177,000 miles · Feb 12, 2021
Back Over PreventionEngineForward Collision Avoidance

ON OR ABOUT 10-14-2020 I HAD GOT A CALL FROM MY NIECE THAT SHE WAS AT A PARKING LOT AND THE TRUCK DIDN'T WANT TO RUN THE SAME. SHE WAS PASSING A INTERSECTION WHEN SHE HEARD A VERY LOUD POP NOISE AND A VERY SCARY NOISE COMING FROM THE ENGINE. THE NOISE DID SHACK HER SOME BUT WHEN SHE NOTICES THE TRUCK HAD LOST ITS POWER SHE W…

Read full complaint

ON OR ABOUT 10-14-2020 I HAD GOT A CALL FROM MY NIECE THAT SHE WAS AT A PARKING LOT AND THE TRUCK DIDN'T WANT TO RUN THE SAME. SHE WAS PASSING A INTERSECTION WHEN SHE HEARD A VERY LOUD POP NOISE AND A VERY SCARY NOISE COMING FROM THE ENGINE. THE NOISE DID SHACK HER SOME BUT WHEN SHE NOTICES THE TRUCK HAD LOST ITS POWER SHE WAS MORE SCARE THAT SHE WAS GOING TO GET HIT BY A OTHER CAR CAME OUT TO BE THE LIFTERS AND CAMSHAFT . WHERE THEY BEEN HAVING CLASS ACTSIONS LAW SUITS WITH GM MOTORS FOR THE SAME PROBLEM WITH OTHER GMC YEAR FROM 2009-2015 5.3 VORTEX ENGINS AND GMC KNEW ABOUT IT BEFORE THE SOLD THE VERY FIRST TRUCK ITS A $10,000.00 DALLORS REPAIR AND WITH THE BANK FINANCE I WILL BE PAYING MORE THEN 25,000.00 AFTER COST AND THIS TRUCK BLUE BOOK ITS AT 15,000.00 LAST TIME I CHECK IT SO ITS NOT WORTH PUTTING SO MUCH MORE MONEY FOR THAT YEAR OF TRUCK. I HAD TRYED TO WORK THINGS OUT WITH THE DEALERSHIP AS WELL WITH GM MOTORS AND HAD NO LUCK OR EVEN A CALL BACK FROM BOTH SIDES. I ASK THAT IF YOU CAN INVESTIGATE THIS MATTER SOME MORE I WILL GLADLY APPRECIATE IT. THANK YOU FOR YOUR TIME.

NHTSA ODI #11395927

177,000 miles · Nov 25, 2020
EngineUnknown Or Other

HEARD A LAUD POP AND GRINDING NOISE ON MY 2013 5.3 VORTEX V8 GMC FROM THE MOTOR WHERE I HAD TO STOP IT BECAUSE I THOUGHT MY MOTOR WAS GOING TO LUCK UP ON ME. I PULLED OVER ON THE SIDE OF THE ROAD ON MISSOURI AND TRIVIZ. WHERE MY WIFE HAD TO PICK ME UP 1 HOUR AFTER THE THE FACT TO HAUL IT BACK HOME. GOT HOME WHERE I DID MY RESEA…

Read full complaint

HEARD A LAUD POP AND GRINDING NOISE ON MY 2013 5.3 VORTEX V8 GMC FROM THE MOTOR WHERE I HAD TO STOP IT BECAUSE I THOUGHT MY MOTOR WAS GOING TO LUCK UP ON ME. I PULLED OVER ON THE SIDE OF THE ROAD ON MISSOURI AND TRIVIZ. WHERE MY WIFE HAD TO PICK ME UP 1 HOUR AFTER THE THE FACT TO HAUL IT BACK HOME. GOT HOME WHERE I DID MY RESEARCH TO FIND PARTS AND LABOR COAST FOR MY TRUCK AND CAME ACROSS SOME ACTIVE CLASS ACTION LAWSUITS ON GMC FOR SAME TAPE OF ENGINE THE 5.3 VORTEX AND SAME AND 1 YEAR OLDER OR 1 YEAR NEWER HAVING THE SAME PROBLEM. WHERE CASES BEEN OPEN SINCE 2016 AND STILL OPEN NOW FOR GMC TO PERFORM THAT KINDA OF ENGINE TO BE CALLED AS A RE-CALL. I THEN GOT A HOLD OF GMC MOTORS TO SEE WHAT THEY CAN DO FOR ME NOT BEING THE ONLY ONE WITH THIS KIND OF PROBLEM TO SEE IF THEY CAN HELP ME IN ANY KIND OF WAY AND THEY RESPOND WAS FOR ME TO TAKE IT TO A CERTIFIED DEALER IN LAS CRUCES, NM FOR GMC. I DID JUST THAT THEN WHERE I WAS REJECTED BY THE DEALER BECAUSE THEY HAD NO INFORMATION ABOUT WHAT I AND MY WIFE JUST HAD DISCOVER BACK HOME. THE REASON WHY GM MOTORS WANTED ME TO TAKE THE TRUCK WAS FOR THEM TO DO A FULL DYNASTIC ON THE TRUCK TO SEE IF IT WAS THE LIFTERS THAT WAS WRONG WITH IT. CAME TO BE IT WAS THE LIFTERS AND AS WELL FOR THE CAMSHAFT WHERE THEY GIVE ME ALL PAPERWORK ABOUT MY TRUCK AND HOW MUCH TO FIX IT WE ARE LOOKING AT 5,000.00 TO REPLACE THE LIFTERS AND CAMSHAFT OR 10,000.00 TO PUT A NEW MOTOR AND THE GM MOTORS DENIED TO HELP OR TO FIX OR REPLACE THE MOTOR AND CAMSHAFT OR EVEN TRY TO MEET ME HALF WAY ON EXPENSES FOR MY TRUCK TO GET IT UP AND RUNNING AGAIN. WE GOT BACK HOME AND TALKED TO A LAWYER THAT BEEN FIGHTING SOME CASES SINCE 2016 AND ADDED HE ADDED ME TO THE OTHERS CASES FOR THE CLASS ACTION LAWSUIT FOR GMC NOT FALLOWING WITH THERE RESPONSIBILITIES FOR THERE ACTION ABOUT THE 5.3 VORTEX FROM 2012-2015 MAKES AND MODELS WITH THIS KINDA OF MOTORS

NHTSA ODI #11376262

70,000 miles · Jun 18, 2019
Engine

CHECK ENGINE COMES IN RELATED TO LOW OIL PRESSURE SENSOR CAUSES AN EMISSIONS LIGHT TO WHICH WILL NOT PASS INSPECTION. HAVE CHANGED OIL PICK UP TUBE O RING, WHICH WAS NOT DAMAGED, PRESSURE SENSOR AND SCREEN HAVE BEEN CHANGED. NO MECHANICS OR LOCAL DEALERS HAVE ANY IDEA HOW TO FIX THIS ISSUE. WHILE DRIVING THE TRUCK AND STOPPED IN…

Read full complaint

CHECK ENGINE COMES IN RELATED TO LOW OIL PRESSURE SENSOR CAUSES AN EMISSIONS LIGHT TO WHICH WILL NOT PASS INSPECTION. HAVE CHANGED OIL PICK UP TUBE O RING, WHICH WAS NOT DAMAGED, PRESSURE SENSOR AND SCREEN HAVE BEEN CHANGED. NO MECHANICS OR LOCAL DEALERS HAVE ANY IDEA HOW TO FIX THIS ISSUE. WHILE DRIVING THE TRUCK AND STOPPED IN TRAFFIC OR AT A VERY LOW SPEED THE OIL PRESSURE LIGHT COMES ON.

NHTSA ODI #11221071

100,000 miles · Jun 17, 2019
Engine

OIL CONSUMPTION DURING NORMAL OPERATIONS IS EXCESSIVE.

NHTSA ODI #11220557

Official recalls

3

21V053000 · 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.

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.

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.