GM bulletin 16-NA-003
What it saysThis technical bulletin provides a procedure to lubricate the exhaust valves to correct a customer on hearing a squeak or chirp noise coming from the rear of the vehicle caused by to the opening/closing of the exhaust… NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Feb 20, 2025, received Apr 23, 2018, about the engine — 6 documents under this number. It names 26 model years across Chevrolet 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 · Cadillac.
Get the next GM bulletin for your model by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis technical bulletin provides a procedure to lubricate the exhaust valves to correct a customer on hearing a squeak or chirp noise coming from the rear of the vehicle caused by to the opening/closing of the exhaust values during normal performance.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 16-NA-003 | Service bulletin | Feb 20, 2025 | 11014575 | PDF, 257 KB |
| 16-NA-003 | Service bulletin | Oct 8, 2024 | 11010547 | PDF, 256 KB |
| 16-NA-003 | Service bulletin | Feb 15, 2024 | 10250545 | PDF, 209 KB |
| 16-NA-003 | Service bulletin | Apr 18, 2023 | 10235722 | PDF, 209 KB |
| 16-NA-003 | Service bulletin | Mar 7, 2023 | 10233333 | PDF, 209 KB |
| 16-NA-003 | Service bulletin | May 6, 2016 | 10134535 | not found |
What the document itself lists
Part the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 89021511 | — | — |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 4081088 | Apply Lubricant to Exhaust Valves | 0.4 hrs |
Read by machine from the document NHTSA serves (4 pages), read Sep 30, 2026. A part number is shown only where it matches GM’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
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.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
Find the emission control for the 2024 Camaro →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
Model years it names
Source: as the manufacturer filed themChevrolet 19 model years
Cadillac 7 model years
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Email me new GM bulletins for one of these models
A weekly email, sent only in a week when GM files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 26 model years this bulletin names have filed 1,309 complaints with NHTSA since 2015. 118 of them name Engine — 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 Camaro, the 13 owners who gave an odometer reading for Engine reported it at a median of 31,600 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
I am writing to report a serious safety issue I experienced with my Chevrolet Camaro, which I believe may be related to a broader mechanical defect affecting General Motors vehicles. Approximately two weeks ago, while driving on the highway, an “ESC” (Electronic Stability Control) warning suddenly appeared on my dashboard.
2024 Chevrolet Camaro · Engine · filed with NHTSA May 13, 2025 · ODI 11660777
The contact owns a 2016 Cadillac Cts. The contact stated that he was an authorized technician at latin motors (3175 nw 37th st, miami, fl 33142). The contact diagnosed that the vehicle was losing freon, which caused the air conditioner not to function. As a result, the air conditioner condenser needed to be replaced.
2016 Cadillac CTS · Engine · filed with NHTSA Aug 10, 2017 · ODI 11014256
Intermittent drivability issue involving the transmission during takeoff from a complete stop, most noticeable in heavy traffic and stop and go conditions. Vehicle shudders and lurches when accelerating from a dead stop, with a sensation similar to being hit from behind followed by abrupt engagement.
2025 Chevrolet Corvette · Engine · filed with NHTSA Feb 5, 2026 · ODI 11715879
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 engine
Source: same model, same component group68 other manufacturer communications filed against these GM models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 22-NA-080 | Service bulletin | Sep 6, 2025 | This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder. |
| 00-06-01-026R | Service bulletin | Jun 5, 2025 | This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage. |
| PIE0815A | Service bulletin | Jun 3, 2025 | This engineering information (EI) closure ends the need for gathering further information from technicians/field in regard to the Service En… |
| 23-NA-170 | Service bulletin | May 16, 2025 | This bulletin advises the tech to inspect deeper into what may be the main cause of an engine failure. |
| 23-NA-153 | Service bulletin | May 15, 2025 | The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is… |
| 15-NA-010 | Service bulletin | May 7, 2025 | This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California… |
| 25-NA-100 | Service bulletin | Apr 18, 2025 | This warranty administration bulletin provides policy information on vehicles outside of a California Emissions State who move to and regist… |
| 23-NA-115 | Service bulletin | Apr 16, 2025 | This service bulletin provides a procedure to verify the noise and align the camshaft caps to correct customer concerns of a Ticking, Tappin… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Chevrolet and Cadillac, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM 16-NA-003 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-003 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. Every GM warranty extension on file lists the ones GM has filed.
Which vehicles does 16-NA-003 cover?
The manufacturer filed it against 26 model years across 2 brands (Chevrolet and Cadillac): 2019 Cadillac ATS, 2016 Cadillac ATS, 2018 Cadillac ATS-V, 2017 Cadillac ATS-V, 2016 Cadillac ATS-V, 2016 Cadillac CTS and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.