Chevrolet bulletin 21-NA-283
What it saysThis service bulletin provides a service procedure to correct a customer concern of a Service Front Suspension Lift System Message Displayed on Driver Information Center (DIC) with DTC C103C and/or C103E Symptom 64 Set. NHTSA’s full summary ↓
Chevrolet filed this with NHTSA as a service bulletin dated Aug 16, 2023, received Sep 7, 2022, about the suspension — 3 documents under this number. It names 4 model years (2020–2023). 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 service bulletin provides a service procedure to correct a customer concern of a Service Front Suspension Lift System Message Displayed on Driver Information Center (DIC) with DTC C103C and/or C103E Symptom 64 Set.
Trouble codes it names: C103C C103E
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 21-NA-283 | Service bulletin | Aug 16, 2023 | 10242237 | PDF, 494 KB |
| 21-NA-283 | Service bulletin | Sep 28, 2022 | 10222830 | PDF, 494 KB |
| 21-NA-283 | Service bulletin | Aug 24, 2022 | 10219292 | PDF, 492 KB |
What the document itself lists
The manufacturer titles it “Service Front Suspension Lift System Message Displayed on Driver Information”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 84923536 | X Module, Frt Susp | 1 | eBay Motors → |
| 85170579 | Page 2 August, 2023 Bulletin No.: 21-NA-283 | 1 | eBay Motors → |
Read by machine from the document NHTSA serves (2 pages), read Sep 30, 2026. A part number is shown only where it matches Chevrolet’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 4 model years this bulletin names have filed 95 complaints with NHTSA since 2015. 18 of them name Electrical System — 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.
I cannot believe the Corvette does not show that the alternator does not show that the car is not charging. I have a thirty year old corvette that will show you when the alternator does not show the car has an under performing alternator. If you do not have it showing on the display it will not show you that the alternator is defective.
2021 Chevrolet Corvette · Electrical System · filed with NHTSA May 3, 2025 · ODI 11658701
While operating my 2023 Chevrolet Corvette at approximately 75 mph on , the vehicle suddenly and unexpectedly lost propulsion. Moments later, the vehicle completely shut down. The instrument display went dark and the vehicle's lights went out. This occurred in active highway traffic.
2023 Chevrolet Corvette · Electrical System · filed with NHTSA Oct 22, 2026 · ODI 11773013
intermittent black screen from the Rear Vision Camera (RVC) on the infotainment screen with red icons when put in reverse the backup camera may fail with a black screen there is no full mirror coverage to the rear of the car while backing up
2021 Chevrolet Corvette · Electrical System · filed with NHTSA Sep 6, 2025 · ODI 11685442
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 suspension
Source: same model, same component group6 other manufacturer communications filed against the Chevrolet Corvette under the same component group (suspension), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| N242484110 | Service campaign | Mar 11, 2025 | Service Update - Certain vehicles listed above may have debris inside the front lift system. Dealers are to flush the front lift system and… |
| 22-NA-132 | Service bulletin | Oct 10, 2024 | This service bulletin informs the technician that the shocks should not be modified by removing spacer to lower vehicle and should not be su… |
| 17-NA-087 | Service bulletin | Sep 26, 2024 | This informational bulletin provides information on Characteristics of Wide Low Aspect Ratio Tires, Vehicle Pulls Left or Right, Wanders, Fo… |
| 05-03-08-002J | Service bulletin | Aug 22, 2024 | This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid lea… |
| 15-00-89-004G | Service bulletin | Apr 26, 2024 | This service bulletin provides technicians with information to help identify the differences between what is considered a fluid leak, and wh… |
| PIT5214F | Service bulletin | Nov 14, 2023 | This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Chevrolet, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Chevrolet 21-NA-283 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 21-NA-283 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. Every GM warranty extension on file lists the ones GM has filed.
Which vehicles does 21-NA-283 cover?
The manufacturer filed it against 4 model years: 2023 Chevrolet Corvette, 2022 Chevrolet Corvette, 2021 Chevrolet Corvette, 2020 Chevrolet Corvette. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.