GM bulletin PIT6105B
What it saysThis Preliminary information communicates to dealership technicians that they will need to perform this step prior to performing any programming on replacement radios. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Mar 19, 2024, received Apr 15, 2024, about the back over prevention. It names 9 model years across Chevrolet, GMC and Cadillac (2023–2024). 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: Chevrolet · GMC · Cadillac.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis Preliminary information communicates to dealership technicians that they will need to perform this step prior to performing any programming on replacement radios.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIT6105B | Service bulletin | Mar 19, 2024 | 10253095 | 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 4 model years
GMC 2 model years
Cadillac 3 model years
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 9 model years this bulletin names have filed 1,131 complaints with NHTSA since 2015. 17 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
Ref: NHTSA ID# 24V589/ GM Recall N242453471 Record shows that the above recall was completed on August 27, 2024. Yesterday while I was reversing my 2024 LYRIQ out of my garage I experienced multiple false automatic braking.
2024 Cadillac Lyriq · Back Over Prevention · filed with NHTSA Oct 21, 2024
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 group29 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 Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 25-NA-081 | Service bulletin | Mar 31, 2025 | Some customers may comment on the park assist switch flashing and/or a ‘Service Side Detection’ DIC message. |
| PIT5907D | Service bulletin | Dec 11, 2024 | This Preliminary information communicates a issue where the park assist module can set current communication dtc's due to a timing issue and… |
| PIT5697D | Service bulletin | Dec 4, 2024 | This Preliminary information communication provides information to the technician on installing Regular Production Option Code UVC Rearview… |
| PIT6123B | Service bulletin | Mar 11, 2024 | This Preliminary information communicates on a software anomaly that causes a Rear Auto Brake and Park Assist Unavailable message on start u… |
| PIT6130 | Service bulletin | Mar 8, 2024 | This Preliminary information communicates a vehicle may be encountered with a grid type box showing at the front of the vehicle in the camer… |
| PIE0775 | Service bulletin | Jan 24, 2024 | This Engineering Information (EI) is recommending that GM dealers check and update each module in the vehicle and bring them up to the lates… |
| N23-G170AA | Service bulletin | Dec 4, 2023 | ⢠This update contains a required software change to help improve the overall software update and diagnostics process. ⢠Be sure to in… |
| PIT6094 | Service bulletin | Nov 30, 2023 | This PI states a vehicle may be encountered with a black or blank radio screen. The dealer technician is advised that updated software will… |
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 and Cadillac, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM PIT6105B 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 PIT6105B 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 PIT6105B cover?
The manufacturer filed it against 9 model years across 3 brands (Chevrolet, GMC and Cadillac): 2024 Cadillac Lyriq, 2023 Cadillac Lyriq, 2024 Cadillac XT4, 2024 Chevrolet Blazer, 2024 Chevrolet Colorado, 2023 Chevrolet Colorado and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.