GM bulletin 25-NA-264
What it saysThis informational bulletin provides information on Automated Brake Bleed and/or Brake Hydraulic Test procedure fails when attempting to perform either procedure. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Sep 3, 2025, received Oct 21, 2025, about the service brakes. It names 6 model years across Chevrolet, GMC and Cadillac (2026). 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 bulletin provides information on Automated Brake Bleed and/or Brake Hydraulic Test procedure fails when attempting to perform either procedure.
Trouble codes it names: C05D3 C0809 all 2 read from the document itself; NHTSA’s summary names none
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 25-NA-264 | Service bulletin | Sep 3, 2025 | 11024387 | PDF, 123 KB |
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 3 model years
GMC 2 model years
Cadillac 1 model year
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 6 model years this bulletin names have filed 407 complaints with NHTSA since 2015. 11 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.
On february 16, 2026, around 4:30 p.m. We were driving our new Cadillac Escalade sport v-series with only 900 miles on the odometer at around 50 miles per hour on highway t in franklin county to our home from the dog groomer with our 2 large breed newfoundland dogs who weigh 130 pounds each named and squiggy who were laying down in the…
2026 Cadillac Escalade · Service Brakes · filed with NHTSA Feb 20, 2026
While driving on Interstate 95 in Boynton Beach, Florida at highway speed, the vehicle began stuttering and then lost power brake assist. The instrument cluster displayed Service ESC followed by Brake assist failure, press hard to brake, speed limited. The red BRAKE telltale and the amber ABS telltale illuminated at the same time.
2026 Chevrolet Silverado · Service Brakes · filed with NHTSA Sep 23, 2026
I was out one day for lunch and my brakes stopped working on my truck. I had the truck towed after I limped home in it. The master cylinder failed at 4,200 miles causing the brakes to fail. It was replaced by the dealership
2026 GMC Sierra · Service Brakes · filed with NHTSA Mar 11, 2026
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 group30 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 |
|---|---|---|---|
| 23-NA-201 | Service bulletin | Sep 6, 2025 | This service bulletin advises the technician of a possible loose ground that may be causing customer concerns of Loss of Steering Assist and… |
| PIT6347A | Service bulletin | Mar 11, 2025 | This Preliminary information communicates an issue with ABS SES MIL / Service Brake System / Service StabiliTrak / BSCM DTC P0606 P0562 and… |
| PIT6347 | Service bulletin | Feb 25, 2025 | This Preliminary information communicates an issue with ABS SES MIL / Service Brake System / Service StabiliTrak / BSCM DTC P0606 P0562 and… |
| 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… |
| PIT5828D | Service bulletin | Jan 9, 2025 | This Preliminary Information communication provides information to the technician about customers that may request the factory Integrated Tr… |
| PIT6134G | Service bulletin | Jan 7, 2025 | This Preliminary information communicates an issue with premature brake pad life and engineering is working on release new pad lining materi… |
| 24-NA-073 | Service bulletin | Jan 3, 2025 | This technical bulletin provides a procedure to inform drivers that under certain driving conditions such as hilly or mountainous roads acco… |
| PIT6134F | Service bulletin | Dec 19, 2024 | This Preliminary information communicates an issue with premature brake pad life and engineering is working on release new pad lining materi… |
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 25-NA-264 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 25-NA-264 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 25-NA-264 cover?
The manufacturer filed it against 6 model years across 3 brands (Chevrolet, GMC and Cadillac): 2026 Cadillac Escalade, 2026 Chevrolet Silverado, 2026 Chevrolet Suburban, 2026 Chevrolet Tahoe, 2026 GMC Sierra, 2026 GMC Yukon. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.