GM bulletin 24-NA-027
What it saysThis technical bulletin provides repair information to correct a customer concern of DTC U3000 Setting in Automated Map Module (HDLM) - SuperCruise Unavailable. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Sep 17, 2024, received Feb 27, 2024, about the equipment adaptive/mobility — 5 documents under this number. It names 21 model years across Chevrolet, 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: Chevrolet · GMC · Cadillac.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis technical bulletin provides repair information to correct a customer concern of DTC U3000 Setting in Automated Map Module (HDLM) - SuperCruise Unavailable.
Trouble codes it names: U3000
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 24-NA-027 | Service bulletin | Sep 17, 2024 | 11009141 | PDF, 380 KB |
| 24-NA-027 | Service bulletin | Aug 22, 2024 | 11008082 | PDF, 380 KB |
| 24-NA-027 | Service bulletin | Feb 26, 2024 | 10251371 | PDF, 533 KB |
| 24-NA-027 | Service bulletin | Feb 20, 2024 | 10250790 | PDF, 102 KB |
| 24-NA-027 | Service bulletin | Feb 14, 2024 | 10250748 | PDF, 84 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 85624159 | — | 1 | |
| 85624160 | — | 1 | |
| 87845922 | — | 1 | |
| 87845923 | — | 1 | |
| 87833362 | — | 1 | |
| 87833364 | — | 1 | |
| 87819889 | — | 1 | |
| 87819892 | Bulletin No.: 24-NA-027 September, 2024 Page | 1 | eBay Motors → |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 6486108 | Replace Automated Map Module for Super Cruise Errors | 1.3 hrs |
Read by machine from the document NHTSA serves (3 pages), read Sep 30, 2026. A part number is shown only where it matches GM’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.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
Find the adaptive cruise control for the 2024 Silverado →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
Model years it names
Source: as the manufacturer filed themChevrolet 9 model years
GMC 9 model years
Also filed against model years this site has no page for: 2022 GMC Hummer EV Pickup.
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 20 model years this bulletin names have filed 5,018 complaints with NHTSA since 2015. 873 of them name Electrical System, Forward Collision Avoidance — 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.
On the 2022 Chevrolet Silverado, the 14 owners who gave an odometer reading for Electrical System reported it at a median of 51,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
Electrical component- Dashboard is constantly glitching, blue-tooth will not connect properly, electrical appears to turn off randomly while driving to the point we have to pullover because it appears and feels like the truck is turning off. Power step running boards malfunction- They don't open or close when they are supposed to.
2022 GMC Sierra · Electrical System · filed with NHTSA Nov 10, 2022
Truck has died going down the road at 40mph. Also have electrical issues with radio..running boards opening going down the road. No sound from radio, signals ...no connections to google on star lost. Radio screen half of screen shuts off. Front crash sensors go off with noting in front of vehicle...loss of cameras no connection.
2023 GMC Sierra · Electrical System · filed with NHTSA Sep 16, 2023
While in traffic over 45 miles per hour, the vehicle placed itself into a hazard mode due to the electric vehicle propulsion system. This happened so fast and the deceleration rate was so quick that it risked a rear end collision. This is the second time this has happened and both were following a heavy rain storm.
2024 Chevrolet Silverado · Electrical System · filed with NHTSA Jul 19, 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 equipment adaptive/mobility
Source: same model, same component group1 other manufacturer communication filed against these GM models under the same component group (equipment adaptive/mobility), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 23-NA-013 | Service bulletin | Jun 12, 2023 | This technical bulletin provides repair information to correct a customer concern of No Alert Tones from Rear Cross Traffic Alert. |
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 24-NA-027 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 24-NA-027 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 24-NA-027 cover?
The manufacturer filed it against 21 model years across 3 brands (Chevrolet, GMC and Cadillac): 2024 Cadillac Escalade, 2023 Cadillac Escalade, 2022 Cadillac Escalade, 2024 Chevrolet Silverado, 2023 Chevrolet Silverado, 2022 Chevrolet Silverado and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.