Chevrolet bulletin N242437530
What it saysService Update - Certain vehicles may have a condition in which a diagnostic trouble code (DTC), U3620-U362E or U3630-U3636, symptom 17, is triggered. NHTSA’s full summary ↓
Chevrolet filed this with NHTSA as a service bulletin dated Apr 3, 2024, about the power train. It names 4 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 communicationPicked out of NHTSA’s summary below, word for word. The document itself is the record, and the dealer checks the VIN.
Service Update - Certain vehicles may have a condition in which a diagnostic trouble code (DTC), U3620-U362E or U3630-U3636, symptom 17, is triggered. This DTC is resulting in customers experiencing a Malfunction Indicator Lamp (MIL) illuminated in the Driver Information Center (DIC), Reduced Propulsion with corresponding DIC message, and a charging limited to 30% State of Charge. IMPORTANT: If the vehicle comes in with the DTC U3620-U362E or U3630-U3636, symptom 17 set, go to SI and follow the published SI diagnostic/repair procedures. After above repairs are performed, come back to this field action to get the required warranty claim code and close this field action with labor operation 9107166. If the DTC is not set, proceed with this bulletin. Dealers are to reprogram the Hybrid Powertrain Control Module 2.
Trouble codes it names: U3620 U3630 all 2 read from the document itself; NHTSA’s summary names none
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| N242437530 | Service bulletin | Apr 3, 2024 | 10252566 | PDF, 414 KB |
What the document itself lists
The manufacturer titles it “N242437530 - Service Update”.
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 9107167 | Hybrid Powertrain Control Module 2 Reprogramming | 0.4 hrs |
Read by machine from the document NHTSA serves (6 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 326 complaints with NHTSA since 2015. 192 of them name Electrical System, Power Train — 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.
While pulling into a parking spot the car made a loud noise and came to a complete stop. Car was able to pull into the spot. When the car was turned on after parking a warning message came up to service transmission, unable to shift soon. Vehicle was driven to dealer for service and would make thud noises when decelerating at low speed
2022 Chevrolet Bolt EV · Power Train · filed with NHTSA Aug 15, 2022
The contact owns a 2022 Chevrolet Bolt EV. The contact received notification of NHTSA Campaign Number: 21V650000 (Electrical System) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair.
2022 Chevrolet Bolt EV · Electrical System · filed with NHTSA Sep 6, 2022
The contact owns a 2021 Chevrolet Bolt EV. The contact received a recall notification for NHTSA Campaign Number: 21V650000 (Electrical System). The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the issue. The part was not available for repair.
2021 Chevrolet Bolt EV · Electrical System · filed with NHTSA Jan 3, 2022
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 power train
Source: same model, same component group12 other manufacturer communications filed against these Chevrolet models under the same component group (power train), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 08-07-30-026I | Service bulletin | Sep 16, 2024 | This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up aft… |
| 24-NA-141 | Service bulletin | Jul 24, 2024 | GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the re… |
| 99-04-20-002O | Service bulletin | Jul 9, 2024 | This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation. |
| 21-NA-148 | Service bulletin | Jun 6, 2024 | This service bulletin provides diagnostic aid information for DTC P2797, P2798 or P0C2D for Transmission Fluid Pump Performance to correct a… |
| 08-07-30-035H | Service bulletin | May 16, 2024 | This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid. |
| 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… |
| 16-NA-338 | Service bulletin | Feb 2, 2024 | This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or… |
| PIP5621D | Service bulletin | Aug 24, 2023 | This Preliminary information communicates to the dealer technician that TAC recommends the utilization of the GDS2 software to aid in diagn… |
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 N242437530 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 N242437530 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 N242437530 cover?
The manufacturer filed it against 4 model years: 2022 Chevrolet Bolt EUV, 2022 Chevrolet Bolt EV, 2021 Chevrolet Bolt EV, 2020 Chevrolet Bolt EV. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.