Manufacturer communication · Service bulletin · 4 brands

GM bulletin PIT5551R

What it saysThis Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting. NHTSA’s full summary ↓

GM filed this with NHTSA as a service bulletin dated Apr 12, 2025, received Apr 15, 2025. It names 242 model years across Chevrolet, GMC, Buick 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 · GMC · Buick · Cadillac.

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What the bulletin says

Source: NHTSA's summary of the manufacturer's communication

This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting. This is normal when the FAB has been set to "Alert".

Kind Service bulletin Manufacturer date Apr 12, 2025 Received by NHTSA Apr 15, 2025 Components —

Document filed under this number

Document	Kind	Dated	NHTSA id	At NHTSA
PIT5551R	Service bulletin	Apr 12, 2025	11016990	PDF, 36 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 them

Chevrolet 109 model years

Also filed against model years this site has no page for: 2018 Chevrolet Trailblazer; 2019 Chevrolet Trailblazer; 2020 Chevrolet Trailblazer.

GMC 66 model years

2025 GMC Acadia 2024 GMC Acadia 2023 GMC Acadia 2022 GMC Acadia 2021 GMC Acadia 2020 GMC Acadia 2019 GMC Acadia 2018 GMC Acadia

Also filed against model years this site has no page for: 2022 GMC Hummer EV Pickup.

Buick 10 model years

2025 Buick Enclave 2024 Buick Enclave 2023 Buick Enclave 2022 Buick Enclave 2021 Buick Enclave 2020 Buick Enclave 2019 Buick Enclave 2018 Buick Enclave

and 2 more on this site: 2025 Buick Envista, 2024 Buick Envista.

Cadillac 57 model years

2019 Cadillac ATS 2018 Cadillac ATS 2017 Cadillac ATS 2016 Cadillac ATS 2025 Cadillac CT4 2024 Cadillac CT4 2023 Cadillac CT4 2022 Cadillac CT4

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 database

Owners of the 238 model years this bulletin names have filed 34,300 complaints with NHTSA since 2015.

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.

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.

Every Chevrolet bulletin →Look up another number

Photo: Christian Buehner / Unsplash

Common questions

Source: NHTSA, 49 CFR 579.5

Is GM PIT5551R 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 PIT5551R 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 PIT5551R cover?

The manufacturer filed it against 242 model years across 4 brands (Chevrolet, GMC, Buick and Cadillac): 2025 Buick Enclave, 2024 Buick Enclave, 2023 Buick Enclave, 2022 Buick Enclave, 2021 Buick Enclave, 2020 Buick Enclave and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.

From here

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