GM bulletin 16-NA-019
What it saysThis informational buleltin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares and information on transmission fast learns NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Feb 12, 2025, received Aug 15, 2017, about the power train — 7 documents under this number. It names 112 model years across Chevrolet, GMC and Cadillac (2016–2025). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
One page for every brand it was filed under. Each brand’s bulletins: Chevrolet · GMC · Cadillac.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis informational buleltin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares and information on transmission fast learns
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 16-NA-019 | Service bulletin | Feb 12, 2025 | 11014353 | PDF, 145 KB |
| 16-NA-019 | Service bulletin | Jul 9, 2024 | 11005020 | PDF, 162 KB |
| 16-NA-019 | Service bulletin | May 2, 2023 | 10236046 | PDF, 86 KB |
| 16-NA-019 | Service bulletin | Apr 14, 2023 | 10235580 | PDF, 85 KB |
| 16-NA-019 | Service bulletin | Mar 21, 2023 | 10234140 | PDF, 59 KB |
| 16-NA-019 | Service bulletin | May 6, 2022 | 10211684 | PDF, 546 KB |
| 16-NA-019 | Service bulletin | Jan 25, 2016 | 10112288 | not found |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themChevrolet 55 model years
and 14 more on this site: 2022 Chevrolet Silverado, 2021 Chevrolet Silverado, 2020 Chevrolet Silverado, 2019 Chevrolet Silverado, 2018 Chevrolet Silverado, 2017 Chevrolet Silverado, 2016 Chevrolet Silverado, 2016 Chevrolet Sonic, 2016 Chevrolet Spark, 2016 Chevrolet Suburban, 2016 Chevrolet Tahoe, 2016 Chevrolet Traverse, 2016 Chevrolet Trax, 2016 Chevrolet Volt.
Also filed against model years this site has no page for: 2016 Chevrolet Caprice.
GMC 32 model years
and 24 more on this site: 2018 GMC Canyon, 2017 GMC Canyon, 2016 GMC Canyon, 2023 GMC Savana, 2022 GMC Savana, 2021 GMC Savana, 2020 GMC Savana, 2019 GMC Savana, 2018 GMC Savana, 2017 GMC Savana, 2016 GMC Savana, 2025 GMC Sierra, 2024 GMC Sierra, 2023 GMC Sierra, 2022 GMC Sierra, 2021 GMC Sierra, 2020 GMC Sierra, 2019 GMC Sierra, 2018 GMC Sierra, 2017 GMC Sierra, 2016 GMC Sierra, 2016 GMC Terrain, 2017 GMC Yukon, 2016 GMC Yukon.
Cadillac 25 model years
and 17 more on this site: 2023 Cadillac CT4, 2022 Cadillac CT4, 2021 Cadillac CT4, 2020 Cadillac CT4, 2018 Cadillac CT6, 2017 Cadillac CT6, 2016 Cadillac CT6, 2019 Cadillac CTS, 2018 Cadillac CTS, 2017 Cadillac CTS, 2016 Cadillac CTS, 2018 Cadillac CTS-V, 2016 Cadillac ELR, 2017 Cadillac Escalade, 2016 Cadillac Escalade, 2016 Cadillac SRX, 2016 Cadillac XTS.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 111 model years this bulletin names have filed 19,287 complaints with NHTSA since 2015. 4,335 of them name Power Train — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
On the 2016 Chevrolet Malibu, the 111 owners who gave an odometer reading for Power Train reported it at a median of 43,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
I bought my car in sept. 2016 after the first couple of months at random times the transmission makes a boom sound when slowing down from speeds over 55 MPH or during acceleration from stop and go rush hour traffic it's as if the transmission has to catch up with the accelerator. I get monthly diagnostics and nothing shows up as an issue
2016 Chevrolet Camaro · Power Train · filed with NHTSA Mar 19, 2018
The contact owns a 2016 Cadillac Srx. The contact stated that there was an extensive clunking noise coming from the transmission. The dealer stated that two of the gears may not have enough clearance, which could be the cause of the noise. The vehicle was not repaired. The manufacturer was contacted and was to follow-up with the dealer.
2016 Cadillac SRX · Power Train · filed with NHTSA Jun 19, 2019
On or about november 26, 2020, at 1:30 AM while driving on I-30 westbound in texarkana, tx traveling at the posted speed of 75 MPH in a 2018 Camaro zl1. The transmission blew out while in cruise control and all systems that transmit power from the engine or propulsion device to the wheels were lost and the vehicle had to coast onto the…
2018 Chevrolet Camaro · Power Train · filed with NHTSA Nov 29, 2020
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the power train
Source: same model, same component group204 other manufacturer communications filed against these GM models under the same component group (power train), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| N252502891-01 | Service campaign | Aug 20, 2026 | Certain vehicles may have a condition in which the internal differential nut was cross threaded or missing during assembly. Dealers will rev… |
| N252502890-01 | Service campaign | Aug 20, 2026 | Certain vehicles may have a condition in which the internal differential nut was cross threaded or missing during assembly. Dealers will rev… |
| N242471460-01 | Service campaign | Aug 20, 2026 | Certain vehicles may have been built with an Electric Drive Unit mounting bolt that is too long, causing damage to the Drive Unit case. Deal… |
| N262556930-01 | Service campaign | Jun 17, 2026 | Certain vehicles may have a condition in which the transfer case drive chain sprocket is cracked. Dealers are to replace the transfer case. |
| N262556930 | Service campaign | Jun 2, 2026 | Certain vehicles may have a condition in which the transfer case drive chain sprocket is cracked. Dealers are to replace the transfer case. |
| N252517790 | Service campaign | Oct 14, 2025 | Certain vehicles, equipped with 8L80 or 8L90 Transmissions, may have a condition in which the reaction carrier cracks. Dealers are to replac… |
| N242454441 -03 | Service campaign | Oct 9, 2025 | Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure w… |
| 25-NA-080 | Service bulletin | Sep 4, 2025 | This service bulletin provides a procedure to overhaul the control valve to replace a plate and worn down check ball to correct the customer… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Chevrolet, GMC and Cadillac, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM 16-NA-019 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the 16-NA-019 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does 16-NA-019 cover?
The manufacturer filed it against 112 model years across 3 brands (Chevrolet, GMC and Cadillac): 2019 Cadillac ATS, 2018 Cadillac ATS, 2017 Cadillac ATS, 2016 Cadillac ATS, 2018 Cadillac ATS-V, 2017 Cadillac ATS-V and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.