GM bulletin PIT5966C
What it saysThis Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Oct 4, 2023, received Dec 4, 2023, about the communication. It names 56 model years across Chevrolet, GMC, Buick and Cadillac (2021–2022). 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 an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIT5966C | Service bulletin | Oct 4, 2023 | 10245986 | not found |
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 26 model years
GMC 12 model years
Buick 6 model years
Cadillac 12 model years
and 4 more on this site: 2022 Cadillac XT5, 2021 Cadillac XT5, 2022 Cadillac XT6, 2021 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 56 model years this bulletin names have filed 6,420 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.
More bulletins about the communication
Source: same model, same component group10 other manufacturer communications filed against these GM models under the same component group (communication), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| N242437620 | Service bulletin | Feb 26, 2024 | Stop Delivery Order - Await Communication: Reference Number N242437620 |
| PIP5948 | Service bulletin | Oct 30, 2023 | This Preliminary Information communication advises the technician that there is a known concern how to verify and that a repair will be avai… |
| PIC6486C | Service bulletin | Oct 26, 2023 | This Preliminary information communicates to dealer that GM is aware of the issue and is working on a resolution. |
| PIT6008B | Service bulletin | Oct 9, 2023 | This Preliminary information communicates to dealers a procedure to remove the radio from demo mode |
| PIT6070A | Service bulletin | Oct 6, 2023 | This Preliminary information communicates technicians are to use SPS2 in TLC to reflash the modules listed above that are not communicating. |
| PIC6523 | Service bulletin | Oct 6, 2023 | This Preliminary information communicates to the technician the diagnostic direct for inoperative moveable windows. |
| PIT6064A | Service bulletin | Oct 4, 2023 | This Preliminary information communicates information stating Engineering is aware of this concern and working on a repair solution. |
| PIP5934 | Service bulletin | Jun 30, 2023 | This Preliminary information communicates the possibility of dtc U060F or U1345 being set as current or history and clearing the codes then… |
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 PIT5966C 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 PIT5966C 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 PIT5966C cover?
The manufacturer filed it against 56 model years across 4 brands (Chevrolet, GMC, Buick and Cadillac): 2022 Buick Enclave, 2021 Buick Enclave, 2022 Buick Encore, 2021 Buick Encore, 2022 Buick Envision, 2021 Buick Envision and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.