GM bulletin 24-NA-048
What it saysThis engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the rear automatic braking may brake unwantedly… NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Feb 6, 2025, received Mar 19, 2024, about the service brakes — 4 documents under this number. It names 113 model years across Chevrolet, GMC, Buick and Cadillac (2023–2025). 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 · Buick · Cadillac.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the rear automatic braking may brake unwantedly, usually when reversing out of a garage or driveway.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 24-NA-048 | Service bulletin | Feb 6, 2025 | 11014277 | PDF, 123 KB |
| 24-NA-048 | Service bulletin | Oct 16, 2024 | 11010708 | PDF, 123 KB |
| 24-NA-048 | Service bulletin | Jul 20, 2024 | 11005376 | PDF, 141 KB |
| 24-NA-048 | Service bulletin | Mar 11, 2024 | 10251915 | PDF, 488 KB |
What the document itself lists
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 3486048 | Setting Up Personalization Settings | 0.3 hrs |
Read by machine from the document NHTSA serves (2 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.
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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.
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Model years it names
Source: as the manufacturer filed themChevrolet 51 model years
and 4 more on this site: 2024 Chevrolet Traverse, 2023 Chevrolet Traverse, 2025 Chevrolet Trax, 2024 Chevrolet Trax.
Also filed against model years this site has no page for: 2024 Chevrolet 3500HD; 2023 Chevrolet 4500HD; 2023 Chevrolet 5500HD; 2023 Chevrolet 6500HD; 2024 Chevrolet Bolt EV; 2025 Chevrolet LOW Cab Forward N Series; 2023 Chevrolet Trax.
GMC 28 model years
and 19 more on this site: 2023 GMC Hummer EV, 2025 GMC Savana, 2024 GMC Savana, 2023 GMC Savana, 2025 GMC Sierra, 2024 GMC Sierra, 2023 GMC Sierra, 2025 GMC Sierra 2500HD, 2024 GMC Sierra 2500HD, 2023 GMC Sierra 2500HD, 2025 GMC Sierra 3500HD, 2024 GMC Sierra 3500HD, 2023 GMC Sierra 3500HD, 2025 GMC Terrain, 2024 GMC Terrain, 2023 GMC Terrain, 2025 GMC Yukon, 2024 GMC Yukon, 2023 GMC Yukon.
Also filed against model years this site has no page for: 2024 GMC 3500HD.
Buick 11 model years
and 3 more on this site: 2023 Buick Envision, 2025 Buick Envista, 2024 Buick Envista.
Cadillac 23 model years
and 14 more on this site: 2023 Cadillac Escalade, 2025 Cadillac Lyriq, 2024 Cadillac Lyriq, 2023 Cadillac Lyriq, 2025 Cadillac Optiq, 2025 Cadillac XT4, 2024 Cadillac XT4, 2023 Cadillac XT4, 2025 Cadillac XT5, 2024 Cadillac XT5, 2023 Cadillac XT5, 2025 Cadillac XT6, 2024 Cadillac XT6, 2023 Cadillac XT6.
Also filed against model years this site has no page for: 2024 Cadillac Redundant Lyriq.
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 104 model years this bulletin names have filed 7,465 complaints with NHTSA since 2015. 3,264 of them name Electrical System, Forward Collision Avoidance, 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 the 2024 Chevrolet Trax, the 15 owners who gave an odometer reading for Electrical System reported it at a median of 16,400 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
Bought new and there was a brake pad sensor message immediately that we took it to the dealer several times for and nothing was done other than clearing the code and giving it back. Was in accident 1/24 and it was found that there was a frayed/damaged wire in the break module and break pad sensor that I feel could have led to the accident
2023 Chevrolet Tahoe · Service Brakes · filed with NHTSA Apr 2, 2024
My Traverse prompted me to do an update - I did- and all my cameras stopped working- took to dealership - they tried to do a Manuel update and locked up the whole system- and the USB’s stopped working - 4 weeks later waiting on new system and no answer in site for when parts will be in - contacted GM and they escalated issue - told to be…
2025 Chevrolet Traverse · Electrical System · filed with NHTSA Jul 22, 2025
On Christmas Day 2025 my Tailgate flies open on its own and I see my cargo flying out and a piece of it bounced off my taillight passenger side braking the taillight and then when attempting to pull over my lane departing feature try’s to correct its self and I hit the median luckily at slower than I was going but enough to make a decent…
2023 GMC Sierra 3500HD · Forward Collision Avoidance · filed with NHTSA Jan 13, 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 group82 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 |
|---|---|---|---|
| N252528241-01 | Service campaign | Jul 23, 2026 | Certain vehicles listed above may have a condition in which the vehicle experiences a reduction in deceleration during a low-speed ABS braki… |
| N252528241 | Service campaign | May 4, 2026 | Certain vehicles may have a condition in which the vehicle experiences a reduction in deceleration during a low-speed ABS braking event when… |
| 24-NA-221 | Service bulletin | Nov 7, 2025 | This service bulletin provides service procedure information on Brake Squeal or Squeak Noise Intermittently on Initial Brake Applies. |
| N252521980-01 | Service campaign | Oct 31, 2025 | Certain vehicles listed above, may have a condition in which the Brake System Control Module does not have the latest software. Dealers are… |
| 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… |
| 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… |
| 25-NA-264 | Service bulletin | Sep 3, 2025 | This informational bulletin provides information on Automated Brake Bleed and/or Brake Hydraulic Test procedure fails when attempting to per… |
| 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… |
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, Buick and Cadillac, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM 24-NA-048 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 24-NA-048 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 24-NA-048 cover?
The manufacturer filed it against 113 model years across 4 brands (Chevrolet, GMC, Buick and Cadillac): 2025 Buick Enclave, 2024 Buick Enclave, 2023 Buick Enclave, 2025 Buick Encore, 2024 Buick Encore, 2023 Buick Encore and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.