Solenoid was rubbed by the wiring harness which caused a leak.
2009 Chevrolet Silverado 1500
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2009 Chevrolet Silverado 1500 do not stand out strongly from the model-year median of 525.
About this comparison →How this year compares
Owner complaints by model year
Compare all Silverado 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
224 reports with mileage · 220 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 230 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Structure. Review the 54 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 43 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Fuel/propulsion System complaints
12 reportsSteel fuel line of fuel sending unit rusted out causing fuel to be sprayed through a pin hole sized area at high pressure.
Fuel system leak at fuel pump due to corrosion. Found raw gas leaking out from under vehicle while vehicle in operation. Upon further investigation, found metal supply and return lines severely corroded and leaking. Repaired with new pump. While being repaired, noted severe corrosion on frame and cross members to include upper s…
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Fuel system leak at fuel pump due to corrosion. Found raw gas leaking out from under vehicle while vehicle in operation. Upon further investigation, found metal supply and return lines severely corroded and leaking. Repaired with new pump. While being repaired, noted severe corrosion on frame and cross members to include upper shock mounts and spare tire mount. Holes in frame were noted.
For the last few months, my Silverado 1500 Hybrid has been experiencing "bump jerk" phenomenon related to the Hybrid mode auto stop mode and the auxiliary transmission pump intermittently not operating correctly. This issue is intermittent. Sometimes in autostop, the truck behaves normally in Hybrid mode. However, when the au…
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For the last few months, my Silverado 1500 Hybrid has been experiencing "bump jerk" phenomenon related to the Hybrid mode auto stop mode and the auxiliary transmission pump intermittently not operating correctly. This issue is intermittent. Sometimes in autostop, the truck behaves normally in Hybrid mode. However, when the auxiliary transmission pump is not operating correctly in auto stop mode and below 25 mph, the truck is at risk of not moving forward in proportion to throttle response as well as rolling backward if my foot is let off the brake while in traffic. After some research, this issue is described in PIP4751G.
Gas leak on top of fuel tank. When fuel pump is powered gas leaks.
MY FUEL PUMP CONTROL MODULE PN20759945 SHORTED. RECALL BULLETIN 14515 COVERS MY MODEL YEAR AND PART NUMBER. HOWEVER, GM CLAIMS MY VIN IS NOT COVERED BY THIS. THIS IS THE SAME PART AND SAME FAILURE LISTED IN THE RECALL BULLETIN, AND IMO IT SHOULD BE COVERED BY GM. FCPM'S ARE POORLY DESIGNED AND POORLY PLACED AND FAIL ON MANY M…
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MY FUEL PUMP CONTROL MODULE PN20759945 SHORTED. RECALL BULLETIN 14515 COVERS MY MODEL YEAR AND PART NUMBER. HOWEVER, GM CLAIMS MY VIN IS NOT COVERED BY THIS. THIS IS THE SAME PART AND SAME FAILURE LISTED IN THE RECALL BULLETIN, AND IMO IT SHOULD BE COVERED BY GM. FCPM'S ARE POORLY DESIGNED AND POORLY PLACED AND FAIL ON MANY MANY GM MODELS OVER A NUMBER OF YEARS. THIS IS AN ITEM THAT SHOULD BE EXPANDED TO INCLUDE ALL VEHICLES WITH THAT PART NUMBER, ESPECIALLY IF THEY ARE MOUNTED EXTERNALLY AND EXPOSED TO THE ENVIRONMENT SUCH AS ON ALL CHEVY SLIVERADOS AND RELATED TRUCKS. THE FAULT IN MY CASE WAS A CHECK ENGINE LIGHT, AND NOT A CRANK NO START. I TOOK THE TRUCK TO GM FOR DIAGNOSIS. THEY SAID THE FCPM NEEDS REPLACED AS IT SHOWS AND INTERNAL FAULT. THIS IS AN EXPENSIVE PART AND SERVICE,WHICH SHOULD BE COVERED BY GM UNDER THE BULLETIN IMO.
TL* THE CONTACT OWNS A 2009 CHEVROLET SILVERADO 1500. WHILE DRIVING 40 MPH, THE VEHICLE STALLED AND THE CHECK ENGINE INDICATOR ILLUMINATED. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC WHO STATED THAT THE FUEL FLOW CONTROL MODULE HAD MOISTURE IN IT, WHICH CAUSED THE VEHICLE TO STALL. THE VEHICLE WAS NOT TAKEN TO A DEALER FOR…
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TL* THE CONTACT OWNS A 2009 CHEVROLET SILVERADO 1500. WHILE DRIVING 40 MPH, THE VEHICLE STALLED AND THE CHECK ENGINE INDICATOR ILLUMINATED. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC WHO STATED THAT THE FUEL FLOW CONTROL MODULE HAD MOISTURE IN IT, WHICH CAUSED THE VEHICLE TO STALL. THE VEHICLE WAS NOT TAKEN TO A DEALER FOR DIAGNOSTIC TESTING OR REPAIRS. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 68,242.
THE LIFTERS IN THE 5.3 ENGINES ARE COMPLETELY TRASH. EVERYONE WHO HAS A SILVER WITH THE 5.3 HAS TO CHANGE LIFTERS OFTEN. MY LIFTERS HAS WENT OUT 2 TIMES IN THE LAST 5 MONTHS. THIS IS A BIG FLAW IN THE SILVERADO. I WAS DRIVING DOWN THE HIGHWAY AT ABOUT 70 AN ALL OF THE SUDDEN MY ENGINE LIGHT STARTS FLASHING AND MY TRUCK STARTS …
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THE LIFTERS IN THE 5.3 ENGINES ARE COMPLETELY TRASH. EVERYONE WHO HAS A SILVER WITH THE 5.3 HAS TO CHANGE LIFTERS OFTEN. MY LIFTERS HAS WENT OUT 2 TIMES IN THE LAST 5 MONTHS. THIS IS A BIG FLAW IN THE SILVERADO. I WAS DRIVING DOWN THE HIGHWAY AT ABOUT 70 AN ALL OF THE SUDDEN MY ENGINE LIGHT STARTS FLASHING AND MY TRUCK STARTS TICKING AND MISSING REALLY BAD.
THE VEHICLE WAS BEING DRIVEN BY MY SON WHEN SERVICE ENGINE LIGHT CAME ON AND I THEN USED MY ACTRON SCAN TOOL AND PULLED 3X CODES FROM THE COMPUTER (ECU) CODES RELATED TO THE FUEL PUMP CONTROL MODULE , AND TRAILER BRAKE WARNING LIGHT APPEARED ON THE INSTRUMENT CLUSTER CLEARED THESE CODES. 2 DAYS LATER CODES REAPPEARED ALL WERE FU…
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THE VEHICLE WAS BEING DRIVEN BY MY SON WHEN SERVICE ENGINE LIGHT CAME ON AND I THEN USED MY ACTRON SCAN TOOL AND PULLED 3X CODES FROM THE COMPUTER (ECU) CODES RELATED TO THE FUEL PUMP CONTROL MODULE , AND TRAILER BRAKE WARNING LIGHT APPEARED ON THE INSTRUMENT CLUSTER CLEARED THESE CODES. 2 DAYS LATER CODES REAPPEARED ALL WERE FUEL PUMP CIRCUIT LOW, FUEL PUMP MODULE AND TRAILER BRAKE CODES. CLEARED CODES THEN INSPECTED THE FPSM VISUALLY REMOVED REAR COVER AND THE FPSM WAS FULL OF WATER I THEM DRIED IT OUT FOR 2X DAYS IN THE SUN TRUCK RAN AFTER REASSEMBLY. BUT 3X DAYS LATER THE TRUCK FAILED TO START THIS TIME WITH COMPUTER SCAN TOOL IN HAND I CHECKED THE FUEL PUMP PRESSURE, THE TRUCK HAD NO FUEL PUMP PRESSURE. I THEN WENT TO MY LOCAL CHEVROLET DEALER AND GAVE THEM THE V.I.N. # TO CHECK THE VEHICLE FOR RECALLS. ONLY RECALL WAS FOR SAFETY BELT RECALL WHICH WAS DONE IN 2009. I FOUND OUT THERE WAS A POTENTIAL RECALL FOR THE FPSM ON THIS WEBSITE. SO II INQUIRED TO THE PARTS DEPARTMENT FOR THIS PART,IT WAS IN STOCK AND 183.00. I THEN PURCHASED A NEW AC DELCO MODULE ON-LINE FOR 85.00 PUT IT ON AND THEN FOUND MY LOCAL SHOP IN TOWN TO HAVE A TECH COME OUT TO RE-FLASH THE FPSM SO THE (ECU) WOULD RECOGNIZE THE NEW PART. I AM SAVING MY COPIES OF THE BILLS SO THAT WHEN SOMEONE DIES FROM THIS PART FAILING WHEN IT STOPS THE VEHICLE HOPEFULLY I CAN BE REIMBURSED FOR ANOTHER PLANNED GM PART FAILURE... SINCERELY MR. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *JB *TR
ON THURSDSY, APRIL 27, 2017, I PARKED MY 2009 CHEVY SILVERADO AT HOME IN MY DRIVEWAY AFTER WORK AND SHUT IT OFF FOR THE NIGHT. IT WAS STATIONARY AT THAT POINT. I DID NOT RESTART IT OR MOVE IT FOR THE REMAINDER OF THE DAY/EVENING. THE NEXT MORNING, THE ENGINE WOULD NOT START. IT SOUNDED LIKE IT WAS GOING TO START, BUT TO NO A…
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ON THURSDSY, APRIL 27, 2017, I PARKED MY 2009 CHEVY SILVERADO AT HOME IN MY DRIVEWAY AFTER WORK AND SHUT IT OFF FOR THE NIGHT. IT WAS STATIONARY AT THAT POINT. I DID NOT RESTART IT OR MOVE IT FOR THE REMAINDER OF THE DAY/EVENING. THE NEXT MORNING, THE ENGINE WOULD NOT START. IT SOUNDED LIKE IT WAS GOING TO START, BUT TO NO AVAIL AFTER SEVERAL TRIES. I DETERMINED IT WAS NOT GETTING FUEL. I CALLED A LOCAL AUTO REPAIR TECH WHO DIAGNOSED IT ON SITE, TO BE A FAULTY CHASSIS ELECTRONIC CONTROL MODULE, WHICH SENDS FUEL TO THE FUEL PUMP. UPON RESEARCHING THE PROBLEM, I FOUND A RECALL BULLETIN / PRODUCT SAFETY RECALL #14515B ISSUED JANUARY 2015. IT CLEARLY STATES THAT THE 2007-2013 CHEVROLET SILVERADO (ALONG WITH MANY OTHER MAKES/MODELS/YEARS) MAY HAVE A CHASSIS ELECTRONIC MODULE COULD HAVE INTERNAL CONTAMINATION (WATER, BUILD-UP CAUSING WIRE AND BOLT CORROSION). I BELIEVE THIS TO BE THE CASE FOR MY VEHICLE. ACCORDING TO THE BULLETIN, THE UNSAFE FACTOR IS THAT THE "VEHICLE COULD STALL WHILE IN MOTION AND INCREASE THE RISK OF A VEHICLE CRASH." WWW-ODI.NHTSA.DOT.GOV/ACMS/CS/JAXRS/DOWNLOAD/DOC/UCM472842/RCRIT-14V614-0055.PDF I AM THE THIRD OWNER SO I DID NOT RECEIVE A RECALL NOTICE DIRECTLY. I PURCHASED THIS VEHICLE MAY 24, 2016.
Official recalls
321V050000 · Air Bags:frontal:passenger Side:inflator Module
Feb 5, 2021
General Motors, LLC (GM) is recalling certain 2007-2011 Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, Yukon XL, and 2009-2011 Chevrolet Silverado 2500, Silverado 3500, GMC Sierra 2500 and Sierra 3500 vehicles originally sold, or ever registered, in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A." Additionally, GM is recalling certain 2007-2008 Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, Yukon XL vehicles originally sold, or ever registered, in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia or "Zone B." These vehicles are equipped with non-desiccated passenger frontal inflators containing phase-stabilized ammonium nitrate (PSAN) propellant. These inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high temperature cycling.
Consequence & remedy
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants, resulting in serious injury or death.
Remedy: GM will notify owners, and dealers will replace the front passenger air bag inflator with an alternate one, free of charge. Interim letters notifying owners of the safety risk were mailed on February 22, 2021. Second notification letters will be mailed once the remedy is available. Owner notification letters were mailed on March 1, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020; Cadillac customer service at 1-800-458-8006; and GMC customer service at 1-800-462-8782. GM's number for this recall is N212328760.
21V052000 · Air Bags:frontal:passenger Side:inflator Module
Feb 5, 2021
General Motors, LLC (GM) is recalling certain 2009 Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Silverado 1500, Silverado 2500, Silverado 3500, Suburban, Tahoe, GMC Sierra 1500, Sierra 2500, Sierra 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 2007-2008 Cadillac Escalade, Escalade ESV, and Escalade EXT, Chevrolet Avalanche, Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, 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." 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 23, 2021. Second notification letters will be mailed once the remedy is available. Owner notification letters were mailed on September 20, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020, Cadillac customer service at 1-800-458-8006, and GMC customer service at 1-800-462-8782. GM's number for this recall is N212328780.
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.
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
2DP22005 · 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.
Illustration