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2013 Chevrolet Silverado 1500

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2013 Chevrolet Silverado 1500 do not stand out strongly from the model-year median of 525.

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When problems were reported

Mileage at the reported incident

170 reports with mileage · 131 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 83 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Structure. Review the 75 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 33 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

8 crash reports0 fire reports4 injury reports

Electrical System complaints

10 reports
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302,584 miles · May 18, 2026
Electrical System

Odometer Fraud. The contact purchased a 2013 Chevrolet Silverado 1500. The contact stated that they discovered that there was a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 163,000. It was later discovered upon checking Carfax that the mileage was 302,58…

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Odometer Fraud. The contact purchased a 2013 Chevrolet Silverado 1500. The contact stated that they discovered that there was a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 163,000. It was later discovered upon checking Carfax that the mileage was 302,584.

NHTSA ODI #11738460

Mileage unknown · Apr 29, 2025
Electrical System

Odometer Fraud. The contact purchased a 2013 Chevrolet Silverado 1500. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 135,000, and at the time of registration, it was discove…

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Odometer Fraud. The contact purchased a 2013 Chevrolet Silverado 1500. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 135,000, and at the time of registration, it was discovered that the mileage was 190,000. The VIN was not available. Local authorities had not been contacted.

NHTSA ODI #11657634

64,000 miles · Jul 27, 2022
Electrical System

The contact owns a 2013 Chevrolet Silverado 1500. The contact stated while depressing the accelerator pedal and brake pedal simultaneously, the brake pedal went to the floorboard. There were no warning lights illuminated. The vehicle was taken to the local dealer and diagnosed; however, no failure was determined. The contact was…

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The contact owns a 2013 Chevrolet Silverado 1500. The contact stated while depressing the accelerator pedal and brake pedal simultaneously, the brake pedal went to the floorboard. There were no warning lights illuminated. The vehicle was taken to the local dealer and diagnosed; however, no failure was determined. The contact was informed that the function was normal. The dealer also suggested that issue might be related to a software failure. The vehicle was not repaired. The contact stated that the failure occurred previously and the brake master cylinder was replaced; however, the failure persisted. The manufacturer was not notified of the failure. The approximate failure mileage was 64,000.

NHTSA ODI #11476092

Mileage unknown · May 25, 2022
Electrical SystemEngineUnknown Or Other

I was told from a mechanic that the header where my spark plugs go is wrapped do to the manufacturer and is causing the spark plugs to misfire. The truck has died at a stop, is causing the truck to run horrible. I am sorry if I am not explaining it all properly. My dad bought this truck brand new in 2013 and he passed away in 2…

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I was told from a mechanic that the header where my spark plugs go is wrapped do to the manufacturer and is causing the spark plugs to misfire. The truck has died at a stop, is causing the truck to run horrible. I am sorry if I am not explaining it all properly. My dad bought this truck brand new in 2013 and he passed away in 2015 and I paid of the car so I could have the memory. So I have had it and been in the truck pretty much off the lot. its has only 95 thousand miles and has had this issue always, but I was always told problems with spark plugs and coils until now. please help

NHTSA ODI #11466052

Mileage unknown · Dec 8, 2020
Electrical SystemSuspensionVehicle Speed Control

MY STABLE LINK AND TRACTION CONTROL LIGHT KEEP COMING ON AND OFF THEN TRUCK NOT RUNNING RIGHT AND MY STARTER/CRANKING DRAGGING REALLY HARD AND THIS IS MY 3RD STARTER IN 3YRS

NHTSA ODI #11378524

45,000 miles · Jan 7, 2020
Electrical System

LIGHT BULB GOES ONUT, IN FRONT HEADLIGHTS AFTER REPLACING IT. REPLACE IT 3 TIMES AND IT CONTINUES TO GO OUT.

NHTSA ODI #11297597

68,000 miles · Feb 14, 2019
Electrical SystemTires

TL* THE CONTACT OWNS A 2013 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE TRAILER BRAKE WARNING INDICATOR ILLUMINATED, BUT THE VEHICLE DID NOT HAVE TRAILER BRAKES. THE CONTACT ALSO STATED THAT THE SPARE TIRE WAS FLAT. THE VEHICLE WAS TOWED TO LONE STAR CHEVROLET (18900 NORTHWEST FWY, JERSEY VILLAGE, TX 77065, (844) 891-7…

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TL* THE CONTACT OWNS A 2013 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE TRAILER BRAKE WARNING INDICATOR ILLUMINATED, BUT THE VEHICLE DID NOT HAVE TRAILER BRAKES. THE CONTACT ALSO STATED THAT THE SPARE TIRE WAS FLAT. THE VEHICLE WAS TOWED TO LONE STAR CHEVROLET (18900 NORTHWEST FWY, JERSEY VILLAGE, TX 77065, (844) 891-7243) TO BE DIAGNOSED. THE DEALER STATED THAT A NEW MODULE FOR THE BLACK BOX AND NEW RELAYS NEEDED TO BE INSTALLED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND REFERRED THE CONTACT TO NHTSA. THE FAILURE MILEAGE WAS 68,000. THE VIN WAS UNKNOWN.

NHTSA ODI #11180045

64,360 miles · Feb 13, 2018
Electrical SystemEngineSteering

WHILE AT LOW SPEEDS, USUALLY DURING A PARKING LOT MANEUVER TYPE CONDITION... MY TRUCK'S ENTIRE ELECTRICAL SYSTEM SEEMS TO SHUT DOWN SEVERAL TIMES FOR LIKE A SECOND OR TWO AT A TIME. BUT IT HAPPENS RAPIDLY. LLKE 4 TO 5 TIMES WITHIN 10 SECONDS. DUE TO THE ELECTRONIC STEERING NOT OPERATING WHEN IT DOES THIS, IT WILL BOUNCE THE STEE…

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WHILE AT LOW SPEEDS, USUALLY DURING A PARKING LOT MANEUVER TYPE CONDITION... MY TRUCK'S ENTIRE ELECTRICAL SYSTEM SEEMS TO SHUT DOWN SEVERAL TIMES FOR LIKE A SECOND OR TWO AT A TIME. BUT IT HAPPENS RAPIDLY. LLKE 4 TO 5 TIMES WITHIN 10 SECONDS. DUE TO THE ELECTRONIC STEERING NOT OPERATING WHEN IT DOES THIS, IT WILL BOUNCE THE STEERING SPORADICALLY WHEN IT CUTS ON/OFF AND KIND OF SCARE YOU. AT THE SAME TIME THE SAD LIGHTS FLICKER AND THE DOOR LOCKS LOCK AND UNLOCK RAPIDLY. EVEN AS A VETERAN DRIVER, IT ALL HAPPENS SO FAST THAT YOU CANNOT REGAIN CONTROL EASILY. WHEN I STOP, TURN THE TRUCK OFF THEN RESTART IT, IT'S BEEN OK. THIS HAS ONLY HAPPENED 3 TIMES. BUT IT CLEARLY SEEMS TO BE A PROBLEM WITH THE IGNITION SYSTEM SHUTTING ON/OFF REALLY FAST.

NHTSA ODI #11072771

24,100 miles · Aug 3, 2017
Electrical System

BACKUP LIGHTS WERE STUCK ON. HAD TRUCK RUNNING AND PUT TRUCK IN REVERSE. THE FUSE BLOCK UNDER THE HOOD STARTING BURNING. THE TRUCK KEPT RUNNING EVEN AFTER TURNING OFF THE SWITCH AND REMOVING THE KEY. HAD TO ACTUALLY PULL THE FUSE BLOCK OUT OF THE TRUCK TO GET IT TO TURN OFF AND STOP IT FROM BURNING. SITTING AT LOCAL DEALERSHIP …

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BACKUP LIGHTS WERE STUCK ON. HAD TRUCK RUNNING AND PUT TRUCK IN REVERSE. THE FUSE BLOCK UNDER THE HOOD STARTING BURNING. THE TRUCK KEPT RUNNING EVEN AFTER TURNING OFF THE SWITCH AND REMOVING THE KEY. HAD TO ACTUALLY PULL THE FUSE BLOCK OUT OF THE TRUCK TO GET IT TO TURN OFF AND STOP IT FROM BURNING. SITTING AT LOCAL DEALERSHIP NOW WAITING TO HEAR FROM THEM. SHOULD HAVE TAKEN PICTURES.

NHTSA ODI #11012568

67,000 miles · Dec 29, 2016
Air BagsElectrical System

TL* THE CONTACT OWNS A 2013 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE SERVICE AIR BAG WARNING INDICATOR ILLUMINATED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE FRONT DRIVER SIDE IMPACT SENSOR FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS N…

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TL* THE CONTACT OWNS A 2013 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE SERVICE AIR BAG WARNING INDICATOR ILLUMINATED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE FRONT DRIVER SIDE IMPACT SENSOR FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 67,000. ...UPDATED 05/11/17 *BF *CN

NHTSA ODI #10938435

Official recalls

2

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.

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.