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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.

About this comparison →

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

Unknown Or Other complaints

105 reports
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Mileage unknown · May 3, 2024
StructureUnknown Or Other

Truck failed inspection due to cracked frame and excessive rust.

NHTSA ODI #11586900

Mileage unknown · Apr 28, 2024
Unknown Or Other

2013 Chevy Silverado undercoated every year since new..(2 owners)... and the frame is rotted. This is disgusting!!! There is a technical service bulletin for frame rust/ rot but not a full recall. Rotted frames are a SAFETY Concern!!!! You need to make GM fix this problem with a full recall!!!!!!!!!!

NHTSA ODI #11585703

Mileage unknown · Apr 18, 2024
Unknown Or Other

The frame on my truck rusted through. 52519 miles. There is no rust anywhere else on the truck. The frame could break causing an accident. Frame has been inspected by 2 different body shops. My frame has been repaired by a qualified repair shop. Needed to be replaced but was told by GM there are no new frames for this truck. Cou…

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The frame on my truck rusted through. 52519 miles. There is no rust anywhere else on the truck. The frame could break causing an accident. Frame has been inspected by 2 different body shops. My frame has been repaired by a qualified repair shop. Needed to be replaced but was told by GM there are no new frames for this truck. Could not find a good used one either. My rusty frame was discovered by a technician at Discount Tire when having a tire rotation. As of [XXX] I had no idea the frame was rusted through. Found out after my truck was being repaired that there was a bulletin on it. I have also found out there are many GM vehicles with this problem. Bulletin #[XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI #11583863

Mileage unknown · Jan 29, 2024
StructureSuspensionUnknown Or Other

In June 2023 I was doing some minor work and inspection on my 2013 Silverado, while under the truck looking for possible issues before taking a trip to Colorado I noticed the frame had a hole in it, after further inspection of the complete frame and undercarriage I found holes all throughout the frame and also cracks in 2 locati…

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In June 2023 I was doing some minor work and inspection on my 2013 Silverado, while under the truck looking for possible issues before taking a trip to Colorado I noticed the frame had a hole in it, after further inspection of the complete frame and undercarriage I found holes all throughout the frame and also cracks in 2 locations. The truck had 85k, the body is solid, and in great condition, kept in a heated garage. In June I went to a Chevrolet dealer to have an air bag recall repair done, at that time the mechanic did a complete inspection of the undercarriage and never mentioned the safety issue with the rusting frame. I decided to go back to the dealer to question a possible frame recall, in my discussion with 3 service writers they assured me there was no recalls or safety bulletins regarding this. Being highly upset about the frame I started looking for possible issues on the frame. I found hundreds of complaints regarding rusting frames and safety incidents, and a service bulletin that came out in 2014 which has been revised to cover up to 2019 Silverados. This bulletin stated the wax protection to prevent the frame from rusting was pealing off and should be repaired, the dealers were cleaning and sealing the rust locations as the bulletin stated. My complaint is, I never received a notice of the bulletin from GM. If I did I could have tried to take precautions to help prevent the rust from spreading. The Chevy dealership said there was never any frame bulletin or recall. Now my truck is not reliable and definitely not safe! The body and mechanical parts are in great shape. It’s unbelievable that a $40,000 vehicle is unsafe to drive, 10 years old, 85k miles and now worth nothing due to the bad frame. Not sure, but if you have read some of these experiences with other owners, I think you would not want any of these on the road. GM should be held accountable for knowing the frames are failing do to a sealer that wouldn’t stay on the frames.

NHTSA ODI #11568672

Mileage unknown · Dec 23, 2023
Unknown Or Other

My dashboard is cracking and I am concerned that it may be dangerous during a collision if the the airbag deploys and creates a shrapnel situation.

NHTSA ODI #11561646

Mileage unknown · Dec 13, 2023
Unknown Or Other

Purchased the Silverado 1500 new in 2013 and was going be my last truck before I retired. Had the truck under coated/rust proofed after the purchase and had it touched up yearly. Went to have it touched up again in 2020 and the shop said they would not do it because the frame was rotting from the inside out. They said it was …

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Purchased the Silverado 1500 new in 2013 and was going be my last truck before I retired. Had the truck under coated/rust proofed after the purchase and had it touched up yearly. Went to have it touched up again in 2020 and the shop said they would not do it because the frame was rotting from the inside out. They said it was a GM flaw in there rust proofing system for their truck frames. I also talked to Ziebart about this and they said the same thing. Zeibart will not under coat any GM truck from 2006 to 2018 because they have seen too many frames rotting out. I only have 70,000 miles on the truck and this is totally UNACCEPTABLE. From what I have seen on the internet it also includes GM's mid sized trucks, Canyon and Colorado. I have read stories of owners having vehicle cracks rendering the vehicle dangerous. Right now there are alot of unhappy GM truck owners that are looking for a class action suit. When trucks where built right it was the bodies that rusted out and not the frames. Pictures included. Thank you, [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI #11559870

Mileage unknown · Dec 2, 2023
Unknown Or Other

My 2013 Chevy Silverado's frame is rotten and cracked on both sides to the point where it may be unrepairable. I originally pulled the bed and dropped the fuel tank due to a broken cross member. That is when I found that all three cross members under the bed were completely rotten out and both the main frame rails were cracked. …

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My 2013 Chevy Silverado's frame is rotten and cracked on both sides to the point where it may be unrepairable. I originally pulled the bed and dropped the fuel tank due to a broken cross member. That is when I found that all three cross members under the bed were completely rotten out and both the main frame rails were cracked. The driver side has a crack over 6 feet long and has began rotting at the crack. The passenger has a crack about 3 foot long. It is clear that the crack on the driver side has been there for years while the dealership continued to inspect the truck. I have driven this truck over 20,000 miles from coast to coast this year and the body is rot free. This broken frame could have caused a catastrophic accident had it let loose on the interstate. I have done my research and found hundreds, possibly thousands of individuals on different forums and other websites that have similar experiences. And in fact was told by a salesperson at the local dealership that they continue to see these same issues in the 2019 and even 2020 models. This is horrible, Chevrolet knows they have a problem and has not taken any recourse to fix the problem. My truck is currently sitting in my driveway with the bed and gas tank removed and the frame is able to be easily inspected.

NHTSA ODI #11558142

Mileage unknown · Dec 1, 2023
Unknown Or Other

The frame on my vehicle is cracked and rotted through. It failed an inspection on 12/01/2023 at Memorial Highway Chevrolet 1 Chevy Dr, Winder,Pa 15963 tel. No. 814-467-2220. The service tech told me the frames on this model traps water. I was referred to another garage for a possible repair. This truck is ten years old with 12…

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The frame on my vehicle is cracked and rotted through. It failed an inspection on 12/01/2023 at Memorial Highway Chevrolet 1 Chevy Dr, Winder,Pa 15963 tel. No. 814-467-2220. The service tech told me the frames on this model traps water. I was referred to another garage for a possible repair. This truck is ten years old with 120k miles on it. It has always been service at a Chevy dealership. I am filing this complaint because GM refuses to do anything about a problem they caused. If this vehicle or others like are involved in collisions this defect can cause serious injury or death. How many vehicles are on the highways operating in this condition? How many are running around in states where they do not conduct safety inspections? Please help!

NHTSA ODI #11558016

Mileage unknown · Nov 12, 2023
Unknown Or Other

Frame severely rusted through at back of cab by gas tank. Dangerous life threatening if frame would break. On 98,000 miles on vehicle. Was taken to same dealer for all oil changes and repairs and was just told of this issue. Very upset as we have been chev owners for almost 50 years!

NHTSA ODI #11554731

Mileage unknown · Nov 3, 2023
Unknown Or Other

Frame is extremely rusted. Integrity of the frame is compromised making vehicle unsafe to drive. Vehicle is available for inspection. If the frame breaks, I and others involved in the possible resulting crash would be injured and/or killed. The independent service center inspected the frame and confirmed the damage due to the m…

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Frame is extremely rusted. Integrity of the frame is compromised making vehicle unsafe to drive. Vehicle is available for inspection. If the frame breaks, I and others involved in the possible resulting crash would be injured and/or killed. The independent service center inspected the frame and confirmed the damage due to the manufacturing defect. The vehicle was inspected by the dealer that sold me the vehicle: Mark Wahlberg Chevrolet, 833-699-0792, 3900 West Broad Street, Columbus, OH 43228, before they sold it to me and they claimed it passed their thorough inspection. I purchased the truck on 6/28/21, 28 months ago, and have driven it 7,044 miles. The truck has been driven 92,971 total miles. The frame should not be rusted to the extent it is now and should not have passed the dealer inspection until it was repaired. The rusted frame IS the warning prior to the failure and the rust first appeared years ago on this truck and on many other Chevrolet and GM trucks. General Motors and Mark Wahlberg Chevrolet likely know about this frame defect and should be made responsible to fix it or refund the $20,000 I paid for the truck or other agreed upon compensation.

NHTSA ODI #11553462

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.