GM service campaign N252521980-01
What it saysCertain vehicles listed above, may have a condition in which the Brake System Control Module does not have the latest software. NHTSA’s full summary ↓
GM filed this with NHTSA as a service campaign dated Oct 31, 2025, about the service brakes. It names 5 model years across Chevrolet, GMC and Cadillac (2023–2024). A service campaign is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
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 communicationPicked out of NHTSA’s summary below, word for word. The document itself is the record, and the dealer checks the VIN.
Certain vehicles listed above, may have a condition in which the Brake System Control Module does not have the latest software. Dealers are to reprogram the Brake System Control Module.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| N252521980-01 | Service campaign | Oct 31, 2025 | 11024688 | PDF, 367 KB |
What the document itself lists
The manufacturer titles it “REVISION: N252521980-01 – Customer Satisfaction Program”.
Parts the bulletin names
| Part number | Description | Qty |
|---|---|---|
| 85868688 | Brake Master Cylinder w/ Electronic Brake Booster | — |
| 85848147 | Brake Master Cylinder w/ Electronic Brake Booster | — |
| 85008638 | Brake Master Cylinder w/ Electronic Brake Booster | — |
| 85850705 | Brake Master Cylinder w/ Electronic Brake Booster | — |
| 13285340 | Pedal Clip | — |
| 19299570 | DOT 4 Brake Fluid (US & Mexico) | — |
| 19299571 | DOT 4 Brake Fluid (Canada) | — |
| 93746642 | DOT 4 Fluid (Korea) | — |
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 9107833 | BSCM Programming and Hydraulic Test Only – No Further Action Required | 0.5 hrs |
| 9107834 | Verified Module Software or Calibration Level: Module Is Programmed with Same Level… | 0.4 hrs |
| 9108113 | Brake Master Cylinder w/ Electronic Brake Booster Replacement + Brake System… | 0.2 hrs |
Read by machine from the document NHTSA serves (6 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.
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 2 model years
GMC 1 model year
Cadillac 2 model years
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 5 model years this bulletin names have filed 445 complaints with NHTSA since 2015. 93 of them name Service Brakes — 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.
Bought car on 10/28/23 and as I was leaving the dealership, I applied the brake and the pedal went to the floor. An error code came up "Brake System Failure". The truck was immediately brought back to the service department. 10/31/23- Capital Chevrolet service department checked the error and deemed the vehicle was safe to drive.
2023 Chevrolet Colorado · Service Brakes · filed with NHTSA Nov 28, 2023 · ODI 11557194
The 2023 Lyriq has 3 selections on the touch screen menu for the level of regenerative braking. They are: 1. Off 2. Low 3. High (I did not go out to my car to see exact wording) The serious issue is that, without notice to the driver, the setting can be reset to "Off".
2023 Cadillac Lyriq · Service Brakes · filed with NHTSA Jan 31, 2024 · ODI 11569075
Chevy of Wasilla, AK did not properly inspect a safety recall for the rear parking brake harness. After I showed the dealership the pictures of the holes in the brake harness, I was told that the holes in the brake harness is a feature to let water out.
2024 Chevrolet Blazer · Service Brakes · filed with NHTSA Jan 13, 2026 · ODI 11710800
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 service brakes
Source: same model, same component group18 other manufacturer communications filed against these GM models under the same component group (service brakes), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| N252521980 | Service campaign | Oct 22, 2025 | Certain vehicles, may have a condition in which the Brake System Control Module does not have the latest software. Dealers are to reprogram… |
| N252519910 | Service campaign | Aug 27, 2025 | Certain vehicles may have a condition in which the Front Right Brake Line Fitting is torqued under specification. Dealers are to tighten the… |
| 25-NA-128 | Service bulletin | May 16, 2025 | This service bulletin provides a service procedure to correct a customer concern of Grind, Groan and/or Rubbing Type Noise Coming from Front… |
| 25-NA-064 | Service bulletin | Mar 20, 2025 | This informational bulletin provides information on the brake system warning lamp illuminated on driver information center (DIC), brake peda… |
| 24-NA-048 | Service bulletin | Feb 6, 2025 | This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engine… |
| 21-NA-142 | Service bulletin | Jan 9, 2025 | This technical bulletin provides repair information to correct a customer concern of hearing front brake grind/groan noise after sitting ove… |
| PIT5696H | Service bulletin | Dec 6, 2024 | This preliminary information discusses potential for a code C0010.5A to store in the brake controller which appears to be setting falsely or… |
| 23-NA-149 | Service bulletin | Oct 26, 2024 | This technical bulletin provides a procedure to correct the condition of Trailer Brake Disabled and/or DTC C1114 Stored During Pulling a Tra… |
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 N252521980-01 a recall?
No. A service campaign 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 N252521980-01 repair free?
A service campaign is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does N252521980-01 cover?
The manufacturer filed it against 5 model years across 3 brands (Chevrolet, GMC and Cadillac): 2024 Cadillac Lyriq, 2023 Cadillac Lyriq, 2024 Chevrolet Blazer, 2023 Chevrolet Colorado, 2023 GMC Canyon. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.