GM service campaign N242446680
What it saysCertain vehicles may have a condition in which the transmission valve body solenoid retaining bolt was not properly torqued. NHTSA’s full summary ↓
GM filed this with NHTSA as a service campaign dated Jul 16, 2024, about the power train. It names 2 model years across Chevrolet and Cadillac (2024). A service campaign is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
One page for every brand it was filed under. Each brand’s bulletins: Chevrolet · Cadillac.
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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.
Certain vehicles may have a condition in which the transmission valve body solenoid retaining bolt was not properly torqued. Dealers will torque the control valve solenoid bolt to specification.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| N242446680 | Service campaign | Jul 16, 2024 | 11004801 | PDF, 150 KB |
What the document itself lists
The manufacturer titles it “N242446680 - Service Update”.
Parts the bulletin names
| Part number | Description | Qty |
|---|---|---|
| 19417577 | Dexron® HP (US) | — |
| 19418066 | Dexron® HP (Canada) | — |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 9107571 | Re-torque Transmission Solenoid Bolt (includes transmission fluid pan removal)… | 1.4 hrs |
Read by machine from the document NHTSA serves (4 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.
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 themChevrolet 1 model year
Cadillac 1 model year
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 2 model years this bulletin names have filed 133 complaints with NHTSA since 2015. 15 of them name 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.
I bought a 2024 Colorado Trail Boss on May 31 and after a week the truck broke down I made a stop in a T intersection, once I had a clear path I started to accelerate and in that moment the truck jerked and at the same time I heard a loud noise under the back of the car.
2024 Chevrolet Colorado · Power Train · filed with NHTSA Jul 23, 2024 · ODI 11603945
Manual transmission: Shift from 1st to 2nd can be difficult at times and can only experience partial engagement of 2nd gear causing grinding and/or popping out of gear when releasing the clutch pedal along with loss of thrust
2024 Cadillac CT4 · Power Train · filed with NHTSA Dec 10, 2025 · ODI 11704318
I took my car to Fields Cadillac Jacksonville for routine oil change and to rotate/balance tires. I was inform via video message that I had an oil leak coming from the camshaft carrier reseal and requires immediate attention
2024 Cadillac CT4 · Power Train · filed with NHTSA Jun 18, 2026 · ODI 11745021
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 group54 other manufacturer communications filed against these GM 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 |
|---|---|---|---|
| N262556930-01 | Service campaign | Jun 17, 2026 | Certain vehicles may have a condition in which the transfer case drive chain sprocket is cracked. Dealers are to replace the transfer case. |
| N262556930 | Service campaign | Jun 2, 2026 | Certain vehicles may have a condition in which the transfer case drive chain sprocket is cracked. Dealers are to replace the transfer case. |
| N252517790 | Service campaign | Oct 14, 2025 | Certain vehicles, equipped with 8L80 or 8L90 Transmissions, may have a condition in which the reaction carrier cracks. Dealers are to replac… |
| N242480631-02 | Service campaign | May 27, 2025 | Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure w… |
| N242480631-01 | Service campaign | May 22, 2025 | Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure w… |
| PIE0824A | Service bulletin | May 10, 2025 | This engineering information (EI) closure ends the need for gathering further information from field in regard to fluid leaking at the outpu… |
| 24-NA-078 | Service bulletin | May 7, 2025 | This bulletin advises the tech to replace the starter and not the trans if grinding or growling is heard from the transmission area. |
| PIE0824 | Service bulletin | Mar 27, 2025 | This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer lis… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Chevrolet and Cadillac, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM N242446680 a recall?
No. A service campaign 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 N242446680 repair free?
A service campaign is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does N242446680 cover?
The manufacturer filed it against 2 model years across 2 brands (Chevrolet and Cadillac): 2024 Cadillac CT4, 2024 Chevrolet Colorado. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.