GM bulletin PIC6587
What it saysThis Preliminary information communicates Thus the active safety systems maybe inoperable and to perform a module reset to correct. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Dec 6, 2024, received Dec 9, 2024, about the lane departure. It names 107 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 Preliminary information communicates Thus the active safety systems maybe inoperable and to perform a module reset to correct.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIC6587 | Service bulletin | Dec 6, 2024 | 11011694 | PDF, 28 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.
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Model years it names
Source: as the manufacturer filed themChevrolet 47 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; 2024 Chevrolet Bolt EV; 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 21 model years
and 13 more on this site: 2023 Cadillac Escalade, 2025 Cadillac Lyriq, 2024 Cadillac Lyriq, 2023 Cadillac Lyriq, 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.
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 103 model years this bulletin names have filed 7,769 complaints with NHTSA since 2015. 51 of them name Lane Departure — 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.
No warnings of any kind went off; I wasn’t even going 2 m.p.h. and hit a piece of wood that was right on the edge of the grass next to the road at the park. This is dangerous, especially at a park or other places where smaller children are present if I get that close to something and the none of the sensors go off letting me know there…
2023 GMC Terrain · Lane Departure · filed with NHTSA Aug 14, 2024 · ODI 11608605
Multiple times I have been driving along at interstate speed when the mirrors retracted in to the windows of their own volition without the pressing of the button. I contacted Nimnicht GMC and scheduled a service for of 2024 at their Phillips Highway location in Jacksonville, FL for them to correct the issue.
2024 Buick Enclave · Lane Departure · filed with NHTSA May 30, 2024 · ODI 11591498
I was stopped at a red light. When the light turned green I entered the intersection, the LKA system began alerting me and pulling the vehicle towards the oncoming left traffic turn lane. I took my foot off the accelerator and reached over to shut the LKA off as it was pulling my vehicle.
2024 Chevrolet Trailblazer · Lane Departure · filed with NHTSA Nov 7, 2025 · ODI 11698171
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 lane departure
Source: same model, same component group6 other manufacturer communications filed against these GM models under the same component group (lane departure), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| PIC6552D | Service bulletin | Dec 6, 2024 | This Preliminary information communicates how to recover the Image Processing Module. |
| 24-NA-213 | Service bulletin | Oct 2, 2024 | This technical bulletin provides repair information to correct customer concerns of Automatic Lane Change inoperative/Disengagement. |
| 18-NA-056 | Service bulletin | Oct 2, 2024 | This service bulletin provides a procedure to apply aluminum butyl tape around the lower side object modules and the fascia to aid in deflec… |
| N24-2436490 | Service bulletin | Jan 30, 2024 | (There may be future updates under this same release number.) This software update does the following: · Improves the heating sy… |
| PIC6123G | Service bulletin | Dec 5, 2023 | This Preliminary Information communication provides information to the technician for the adaptive cruise control or lane keep assist unavai… |
| 23-NA-095 | Service bulletin | Jun 8, 2023 | This service bulletin provides repair information to correct a customer concern of Lane Keep Assist Unavailable / Adaptive Cruise Control In… |
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 PIC6587 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 PIC6587 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 PIC6587 cover?
The manufacturer filed it against 107 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.