GMC bulletin PIT5918B
What it saysThis Preliminary information communicates an issue where GM Accessory Illuminated Emblem may cause an issue with the left headlight/turn signal and dealership are to disable the Accessory Illuminated Emblem until a fix… NHTSA’s full summary ↓
GMC filed this with NHTSA as a service bulletin dated Aug 16, 2024, about the exterior lighting. It names 11 model years (2020–2022). 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.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis Preliminary information communicates an issue where GM Accessory Illuminated Emblem may cause an issue with the left headlight/turn signal and dealership are to disable the Accessory Illuminated Emblem until a fix is available.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIT5918B | Service bulletin | Aug 16, 2024 | 11006460 | PDF, 35 KB |
What the document itself lists
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 0588648 | Inspect, Clean, and Replace Illuminated Emblem Kit | 0.9 hrs |
Read by machine from the document NHTSA serves (4 pages), read Sep 30, 2026. A part number is shown only where it matches GMC’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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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.
Model years it names
Source: as the manufacturer filed themA 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 11 model years this bulletin names have filed 2,821 complaints with NHTSA since 2015. 9 of them name Exterior Lighting — 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.
Headlight vent failed. Hid control board filled up with moisture. Headlight is flashing like emergency vehicle if it turns on at all
2021 GMC Sierra 2500HD · Exterior Lighting · filed with NHTSA Feb 12, 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 exterior lighting
Source: same model, same component group17 other manufacturer communications filed against these GMC models under the same component group (exterior lighting), newest first. The eight newest are listed; the rest are on the GMC list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 661.50 | Over-the-air update | Jun 17, 2026 | • Surround Vision Recorder, a new feature that allows you to record, watch, and save video from your vehicle's cameras. • Security Recording… |
| 07-08-42-006U | Service bulletin | Jun 2, 2025 | This service bulletin provides technicians with information on available BCM calibrations to restore bulb outage detection on vehicles produ… |
| PIE0827 | Service bulletin | Apr 10, 2025 | This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engine… |
| 07-08-42-006T | Service bulletin | Mar 25, 2025 | This service bulletin provides technicians with information on available BCM calibrations to restore bulb outage detection on vehicles produ… |
| PIT6280A | Service bulletin | Feb 13, 2025 | This Preliminary information communicates that a dealer may install the perimeter rocker lighting kit and find that it will not illuminate.… |
| 01-08-42-001Q | Service bulletin | Jan 27, 2025 | This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines. |
| PIT6310 | Service bulletin | Dec 19, 2024 | This Preliminary information communicates an issue where the rear tail lights may not work and dealership are to replace the tail light asse… |
| 24-NA-152 | Service bulletin | Nov 9, 2024 | This bulletin offers Information on Intellibeam Inop, Auto High Beam Headlamps, Side Blind Zone Inop, and/or Side Object Detection Inop. |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for GMC, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GMC PIT5918B 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 PIT5918B 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 PIT5918B cover?
The manufacturer filed it against 11 model years: 2022 GMC Sierra, 2021 GMC Sierra, 2020 GMC Sierra, 2022 GMC Sierra 2500HD, 2021 GMC Sierra 2500HD, 2020 GMC Sierra 2500HD and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.