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.
Engine complaints
36 reportsThe contact owns a 2009 Chevrolet Silverado 1500. The contact stated that the service air bag warning light was illuminated. The vehicle failed to start. The vehicle was taken to the local dealer, where it was diagnosed and determined that the air bag control module was corroded due to moisture in the driver weld. The vehicle wa…
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The contact owns a 2009 Chevrolet Silverado 1500. The contact stated that the service air bag warning light was illuminated. The vehicle failed to start. The vehicle was taken to the local dealer, where it was diagnosed and determined that the air bag control module was corroded due to moisture in the driver weld. The vehicle was not covered under a recall. The vehicle was not repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 90,000.
This truck has the 5.3L engine with the Active Fuel Management system. I took the truck in for the 55,000 service on 02/04/2020. A month later with 56,000 miles, I had to take the truck in for something. At that time, I found out the truck had used up 2 1/2 qts of oil in 1,000 miles. Never had a problem using oil between the 5,0…
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This truck has the 5.3L engine with the Active Fuel Management system. I took the truck in for the 55,000 service on 02/04/2020. A month later with 56,000 miles, I had to take the truck in for something. At that time, I found out the truck had used up 2 1/2 qts of oil in 1,000 miles. Never had a problem using oil between the 5,000 mile service intervals before. Their are no leaks anywhere. The dealer had me bring the truck in every 1,000 miles for oil consumption checks for 4 times. The last time it showed a 1/2 qt usage. I had the 60,000 mile service. Then at 62,390 on 01/26/2022 I had some lifter noise. Checked the oil and found it had used 4 qts in 2,390. I had been told that the 2009-2011 Chevy 5.3L engines with the AFM had problems using oil starting around 60,000 miles. 4 qts of oil usage in 2,390 miles is not right.
The contact owns a 2009Chevrolet Silverado LD. The contact stated that he purchased his vehicle 2 months ago and when driving his vehicle at approximately 10 MPH, pulling off from a red traffic light, his vehicle's tailpipe had fallen off. The contact stated that there was no warning light illuminated at the time, nor an indic…
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The contact owns a 2009Chevrolet Silverado LD. The contact stated that he purchased his vehicle 2 months ago and when driving his vehicle at approximately 10 MPH, pulling off from a red traffic light, his vehicle's tailpipe had fallen off. The contact stated that there was no warning light illuminated at the time, nor an indication that something was wrong with his vehicle. The contact stated that he then took his vehicle to the dealer who advised him of a third party who could look at his vehicle and make the proper diagnoses, however, he would have to pay out of pocket. The contact stated he was unable to have the third party look at his vehicle, so he was able to fix the vehicle himself. The contact stated that shortly after he fixed the failure on his vehicle he went to start the vehicle with the remote start but the vehicle would not turn on. The contact stated the check engine warning light did illuminate at that time. The contact stated that he then manually started his vehicle and drove it to the dealer where it remains. The contact stated he was then advised by the dealer that his engine was bad amongst several other components. The contact has not contacted the manufacturer at this time. The failure mileage was 208,000.
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.
the warning lights occur frequently when the truck is idling and then disappears and reappears while driving. The “Service Stabilitrak” light will usually appear first and then the car will turn traction control off. Once traction control is turned off, the transmission beings to shift very hard and rough. Additionally, Loss of …
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the warning lights occur frequently when the truck is idling and then disappears and reappears while driving. The “Service Stabilitrak” light will usually appear first and then the car will turn traction control off. Once traction control is turned off, the transmission beings to shift very hard and rough. Additionally, Loss of engine power and or limp mode are also symptoms in addition to very hard shifting.
TL* THE CONTACT OWNS A 2009 CHEVROLET SILVERADO 1500. THE CONTACT STATED WHILE DRIVING AT VARIOUS SPEEDS, THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO SULLIVAN MOTORS (3114 US 49 #3843, COLLINS, MS 39428) WHERE THE VEHICLE RECEIVED AN UNKNOWN REPAIR. THE VEHICLE WAS REPAIRED HOWEVER, THE FAILURE RECURRED.…
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TL* THE CONTACT OWNS A 2009 CHEVROLET SILVERADO 1500. THE CONTACT STATED WHILE DRIVING AT VARIOUS SPEEDS, THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO SULLIVAN MOTORS (3114 US 49 #3843, COLLINS, MS 39428) WHERE THE VEHICLE RECEIVED AN UNKNOWN REPAIR. THE VEHICLE WAS REPAIRED HOWEVER, THE FAILURE RECURRED. THE MANUFACTURER HAD NOT BEEN INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 90,000.
FREQUENTLY WHEN DRIVING TRUCK WILL DO SOME OR ALL OF THE FOLLOWING THINGS, DOOR LOCKS LOCKING AND UNLOCKING, DASH LIGHTS FLASHING, STEREO COMING ON AND OFF, ELECTRONIC STABILITY CONTROL TURNS OFF, ALL LIGHTS, EXTERIOR AND INTERIOR, TURN OFF AND ON SOMETIMES STAYING OFF LONG ENOUGH AT NIGHT WILL SCARE YOU, TRUCK SPEEDS UP BUT THE…
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FREQUENTLY WHEN DRIVING TRUCK WILL DO SOME OR ALL OF THE FOLLOWING THINGS, DOOR LOCKS LOCKING AND UNLOCKING, DASH LIGHTS FLASHING, STEREO COMING ON AND OFF, ELECTRONIC STABILITY CONTROL TURNS OFF, ALL LIGHTS, EXTERIOR AND INTERIOR, TURN OFF AND ON SOMETIMES STAYING OFF LONG ENOUGH AT NIGHT WILL SCARE YOU, TRUCK SPEEDS UP BUT THEN SOMETIMES LOSING POWER. ALL OF THOSE THINGS HAPPEN WHEN THE TRUCK IS IN MOTION. I DRIVE ON THE HIGHWAY EVERY DAY WHICH IS BAD WHEN TRUCK DOES THESE THINGS. NOT A SAFE SITUATION FOR ME. THEN SOMETIMES WHEN YOU TURN IT OFF YOU HEAR A LOUD CLICKING NOISE. IF YOU DO NOTHING BATTERY WILL BE DEAD WHEN YOU TRY TO START IT NEXT TIME. I CAN GET IT TO STOP THE CLICKING BY RAISING HOOD I AND TAPPING ON POSITIVE BATTERY CAN I LET OR THE MEGA FUSE THAT IS ON THE FIREWALL. CHEVROLET HAS RECALLED THE 2008 TRUCKS FOR SOMETHING SIMILAR TO THIS. I *TR
THE DASH ON THE PASSENGER SIDE IS CRACKED AND COULD HURT SOMEONE IF THE AIRBAGS WERE TO DEPLOY. THIS IS A VERY COMMON ISSUE WITH THE 2009 SILVERADO. ALSO, THE LIFTERS ARE VERY BAD AND WILL STOP WORKING IF THE AFM ISN'T TURNED OFF. I THOUGHT MY ENGIE WAS DEAD WHEN GOING 70 AND THE LIFTER GO OUT. LOST ALL POWER AND HAD TO TOW …
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THE DASH ON THE PASSENGER SIDE IS CRACKED AND COULD HURT SOMEONE IF THE AIRBAGS WERE TO DEPLOY. THIS IS A VERY COMMON ISSUE WITH THE 2009 SILVERADO. ALSO, THE LIFTERS ARE VERY BAD AND WILL STOP WORKING IF THE AFM ISN'T TURNED OFF. I THOUGHT MY ENGIE WAS DEAD WHEN GOING 70 AND THE LIFTER GO OUT. LOST ALL POWER AND HAD TO TOW IT TO A SHOP. THIS HAS HAPPENED TWICE.
THE WARNING SCREEN SHOWS: ENGINE HOT/ AC TURNED OFF, I HAVE BEEN REPLACED 4 TIMES THE TEMPERATURE SENSOR. IT WAS THE TEST DETECTED. IT WORKED ABOUT 3 MONTHS. LATER A TECH. TOLL ME, JUST RESET THE SYSTEM BY DISCONNECTING A BATTERY POLE, WORKS FOR A WHILE. 2 WEEKS AGO I REPLACED AGAIN THE TEMPERATURE SENSOR, AND AND THE THERMOSTAT…
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THE WARNING SCREEN SHOWS: ENGINE HOT/ AC TURNED OFF, I HAVE BEEN REPLACED 4 TIMES THE TEMPERATURE SENSOR. IT WAS THE TEST DETECTED. IT WORKED ABOUT 3 MONTHS. LATER A TECH. TOLL ME, JUST RESET THE SYSTEM BY DISCONNECTING A BATTERY POLE, WORKS FOR A WHILE. 2 WEEKS AGO I REPLACED AGAIN THE TEMPERATURE SENSOR, AND AND THE THERMOSTAT. I WORKED FOR 12 DAYS , AND NOW I HAVE THE SAME PROBLEM, BUT, EVEN WHEN I RESET THE IT IT WORKS FOR NOT MORE THAN 10 MINUTES, AND THE " ENGINE HOT/ AC OFF SHOWS AGAIN.
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.
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