2015 Chevrolet Silverado 1500

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.

On November 20, 2018, the Office of Defects Investigations (ODI) opened PE18-012 to investigate instances of sudden onset of a hard brake pedal that could result in extended stopping distance due to an issue with the brake assist vacuum pump in model year (MY) 2014 through 2016 GMC Sierra 1500 and Chevrolet Silverado 1500 series pickup trucks and MY 2015 through 2016 Cadillac Escalade, Chevrolet Suburban, Chevrolet Tahoe, and GMC Yukon SUVs.If the brake assist vacuum pump fails to operate as intended, the amount of brake power assist supplied to the driver can be significantly reduced, extending the subject vehicle stopping distance. GM stated that the root cause of pump failures was due to foreign debris such as oil sludge in the engine oil. GM stated that this debris can become trapped by the oil inlet filter screen. Under normal operation, this screen allows a small amount of oil into the brake vacuum pump. The foreign debris can, over time, clog the pump which can cause a loss of lubrication and a reduction in the amount of vacuum produced leading to a hard pedal and extended stopping distance.On December 13, 2018, GM issued a Special Coverage (N182202780) for the brake vacuum pump issue in MY 2014-2017 trucks and 2015-2017 SUVs on the K2XX platform for 6 years or 72,000 miles. Special Coverage repair includes the replacement of the vacuum pump and vacuum pump belt. Consumers received notification of the coverage via mail. On September 6, 2019, GM notified NHTSA that it was conducting safety recall 19V-645 which reprograms the electronic brake control module (EBCM) and included approximately 3.5 million trucks and SUVs. In October 2019, GM extended the terms of special coverage N182202780 to 10 years or 150,000 miles as well as now including the entire scope of recall 19V-645. In October 2020, GM expanded the scope of coverage N182202780 to include the MY 2018 Escalade and 2019 Tahoe.The remedy implemented in GM recall 19V-645 appears to be sufficient in addressing the safety-related concerns of this issue. Loss of vacuum assist now occurs at a progressive rate as well as there being a more timely warning of a brake problem to the driver through the driver information center (DIC). In view of the recall action and revision to the special coverage, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances. The ODI reports cited above are available for review online at NHTSA.gov under the identification numbers in the attached document.

The contact owns a 2015 Chevrolet Silverado 1500. The contact stated that while the vehicle was parked, the "Service Power Steering Drive" message was displayed and the steering wheel became extremely difficult to maneuver. The contact attempted to drive onto the main street; however, had to drive slowly with the hazard lights activated, before returning to the residence. The contact researched and became aware of an unknown recall; however, the VIN was not under recall. The vehicle was taken to an independent mechanic to be diagnosed and associated the failure with an electric pump. The failure mileage was approximately 106,799.

NHTSA ID

11766525

Incident

Sep 23, 2026

Mileage

106,799 mi

I am filing this complaint regarding a serious engine lifter/Active Fuel Management (AFM) failure in my 2015 Chevrolet Silverado 1500. The vehicle experienced a lifter failure that caused significant engine problems and created a potential safety concern while driving back from shopping: loss of power, engine misfire, severe shaking, ticking, check-engine light, stalling, inability to maintain speed, etc. The vehicle had approximately 200k miles at the time of the failure. The vehicle was inspected by a local mechanic, which diagnosed the problem as collapsed/failed lifter. The repair required/will cost approx. 3k or more estimated My concern is that this does not appear to be an isolated failure. Other owners of 2015 Chevrolet Silverado 1500 trucks equipped with GM's Active Fuel Management system have reported lifter failures, including failures resulting in engine damage and sudden loss of engine power or propulsion. A sudden lifter or related engine failure can create a significant safety hazard, particularly when it occurs at highway speeds, while merging into traffic, crossing an intersection, or in another situation where the driver depends upon the engine to maintain acceleration and vehicle speed. I am reporting this in hopes that GM can be held accountable as they knew about these defective lifters but did nothing but hide it.

NHTSA ID

11764555

Incident

Sep 3, 2026

January of last year, I was driving, coming off the highway, my engine came on and the system send to shutdown immediatly. I was close enough to my machanic, upon inspection, the AFM System failed at only 76,622 miles. This is part of the building issues with this value lifter problem I wanted to document it with the NHTSA as you are actively opening case for this ongoing issue with GM. i am hoping that a class action law suit will hopfully gain traction. this was a know issue, i was outside of standard warrenty, I was forced to replace the engine out of my own pocket to avoid having a truck worth almost nothing. I will bring this up with GM corporate also, reciept uploaded. Millions of 2014-present trucks and SUVs, while federal investigations specifically target nearly 878,000 to 1 million newer vehicles (2019–2026). GM should be helad accountable

NHTSA ID

11760325

Incident

Jan 21, 2025

When applying brakes at low speeds the brakes are unresponsive they sound rough and the vehicle does not come to a stop it skids forward, and an electric low whine occurs. This doesn't happen everytime. I took it in for Carvanas 30 day warranty and was told its because I drove it down the mountain grade while applying brakes and they didnt find anything wrong with the brake thus wouldn't be covered. Been seeing this vacuum issue with the brakes on this particular issue and seeing if I can get this resolved.

NHTSA ID

11759276

Incident

Aug 16, 2026

Lifter for cylinder 7, part of the Active Fuel Management system, failed to open causing the truck to lose full power while I was on the highway without any warning prior to the incident. It could have caused an accident if It had happened during a busier time on the highway as I could not go the "flow of traffic's speed." It has been torn down and looked over to confirm the problem and full extent of the damage, by a dealership, with pictures of proof. This has left me without my vehicle for months due to needing a full brand new motor.

NHTSA ID

11758961

Incident

Jun 1, 2026

The contact owns a 2015 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, the brakes failed to engage while the brake pedal was depressed. The contact placed both feet on the brake pedal for the vehicle to come to a stop. No warning lights were illuminated. A dealer was contacted and made the contact aware of an unknown recall; however, the VIN was not under recall. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 187,918.

NHTSA ID

11758625

Incident

Aug 21, 2026

Mileage

187,918 mi

The contact owns a 2015 Chevrolet Silverado 1500. The contact stated that while driving at various speeds, the vehicle lost power steering functionality for approximately 1 minute. The failure had occurred while the steering wheel was straight or turning towards the left or the right, and the steering wheel was jerking during the failure. The “Power Steering” message was displayed, and there was an audible chime intermittently. The dealer was contacted, and the issue was discussed. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the issue. The failure mileage was 158,000.

NHTSA ID

11758442

Incident

Aug 18, 2026

Mileage

158,000 mi

The contact owns a 2015 Chevrolet Silverado 1500. The contact stated that while his son was stopped at a gas station, while buckling the seat belt, the floor anchor pretensioner cable snapped off. The contact stated that there was no warning light illuminated. A Chevrolet dealer was contacted and stated that the VIN was previously under recall, and the vehicle was repaired in Maryland in 2016 under NHTSA Campaign Number: 16V209000 (Seat Belts). The vehicle was recently repaired at Lancaster Chevrolet in Lancaster, SC (1616 Charlotte Hwy, Lancaster, SC 29720), and the contact stated that the vehicle would be covered under warranty if the mileage was under 184,700 miles. The contact paid out of pocket to have the cable replaced. The cause of the failure was not diagnosed. The manufacturer was not notified of the failure. The approximate failure mileage was 200,000.

NHTSA ID

11756993

Incident

Jul 4, 2026

Mileage

200,000 mi

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

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This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.