GM bulletin PIT6044F
What it saysThis Preliminary information communicates that a Software update is in the works and to disconnect the 12 volt battery to clear the codes. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Dec 1, 2023, received Jan 29, 2024, about the back over prevention. It names 5 model years across GMC and Cadillac (2022–2024). 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: GMC · Cadillac.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis Preliminary information communicates that a Software update is in the works and to disconnect the 12 volt battery to clear the codes.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIT6044F | Service bulletin | Dec 1, 2023 | 10249261 | 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 themGMC 3 model years
Also filed against model years this site has no page for: 2022 GMC Hummer EV Pickup.
Cadillac 2 model years
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 3 model years this bulletin names have filed 33 complaints with NHTSA since 2015. 3 of them name Back Over Prevention — 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.
Backing out of driveway and screen went black and a collision occurred a second or two later. We have had the Lyriq in the shop multiple times for glitchy screens and screen going black but never has been fully resolved. I did recieve a recall letter (unfortunately I threw it away) but now it shows no recalls (strange).
2023 Cadillac Lyriq · Back Over Prevention · filed with NHTSA Aug 21, 2025
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 back over prevention
Source: same model, same component group9 other manufacturer communications filed against these GM models under the same component group (back over prevention), newest first. The eight newest are listed; the rest are on the GMC list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| PIT6139 | Service bulletin | Mar 21, 2024 | This Preliminary information communicates to the field on how to clear the Service Drivers Assist message with new software that is now avai… |
| PIT6044E | Service bulletin | Oct 30, 2023 | This Preliminary information communicates that a Software update is in the works and to disconnect the 12 volt battery to clear the codes. |
| N23-241765 | Service bulletin | Sep 4, 2023 | '(There may be future updates under this same release number.) Your Cadillac LYRIQ keeps getting better. This vehicle software update inclu… |
| PIT6047B | Service bulletin | Aug 17, 2023 | This Preliminary information communicates to dealership technicians to create a USB file that will have the radio ignore the BCM message for… |
| N23-240448 | Service bulletin | Aug 15, 2023 | '(There may be future updates under this same release number.) Your GMC Hummer EV keeps getting better. This software update includes th… |
| PIT6044A | Service bulletin | Aug 9, 2023 | This Preliminary information communicates that a Software update is in the works and to disconnect the 12 volt battery to clear the codes. |
| PIT6044 | Service bulletin | Aug 3, 2023 | This Preliminary information communicates that a Software update is in the works and to disconnect the 12 volt battery to clear the codes. |
| PIC6515 | Service bulletin | Aug 2, 2023 | This Preliminary information communicates that a service drivers assist message may be displayed with U197A found setting current or history… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for GMC and Cadillac, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM PIT6044F 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 PIT6044F 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 PIT6044F cover?
The manufacturer filed it against 5 model years across 2 brands (GMC and Cadillac): 2023 Cadillac Lyriq, 2024 GMC Hummer EV, 2023 GMC Hummer EV, 2024 Cadillac Redundant Lyriq, 2022 GMC Hummer EV Pickup. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.