GM service campaign N262570770-02
What it saysCertain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. NHTSA’s full summary ↓
GM filed this with NHTSA as a service campaign dated Sep 25, 2026, about the engine. It names 8 model years across Chevrolet and Cadillac (2023–2025). 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 thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| N262570770-02 | Service campaign | Sep 25, 2026 | 11037486 | PDF, 588 KB |
What the document itself lists
The manufacturer titles it “UPDATE: N262570770-02 – Service Update”.
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 9108597 | Cut Upper Radiator Thermal Break Tabs Blazer XT5 & XT | 0.3 hrs |
Read by machine from the document NHTSA serves (10 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 2 model years
Cadillac 6 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 8 model years this bulletin names have filed 243 complaints with NHTSA since 2015. 10 of them name Engine — 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.
Engine problem loss of power intermittently no reverse. They replaced clutch parts seals, piston, rings, plates, and plates. Had Vehicle for about 22 days. Driving home after repairs completed. Cluster display- instrument panel went out. Called Dealer and Cadillac assistance. Says there nothing they can do until Cadillac releases a fix.
2024 Cadillac XT5 · Engine · filed with NHTSA Jun 24, 2024
6700 miles on 2025 XT6 had an oil change a month ago. Noted red fluid leaking on driveway on 02-10-26. Immediately notified dealer. Brought car in 9:15 am 02-11-26 was informed at 10:00 am that the car is experiencing faulty transmission bolts and it will require lengthy repair including "dropping transmission to reach bolts." I have…
2025 Cadillac XT6 · Engine · filed with NHTSA Feb 11, 2026
When driving the whole car shakes and the engine makes a loud sound. It doesn't matter if I am going 10 mph or 75 mph the same shaking happens. The engine smells like burnt rubber. Driving feels like jerking not a smooth ride. I have already had the engine oil leak repaired.
2023 Cadillac XT5 · Engine · filed with NHTSA Apr 10, 2026
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 engine
Source: same model, same component group72 other manufacturer communications filed against these GM models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| N262570770-01 | Service campaign | Sep 18, 2026 | Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to… |
| N262570770 | Service campaign | Sep 15, 2026 | Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to… |
| N262568830 | Service campaign | Aug 4, 2026 | Certain vehicles listed above may have a condition in which the oil filter was not adequately tightened. Dealers are to check and tighten th… |
| N252508350 | Service campaign | Oct 21, 2025 | Certain vehicles listed above, may have a condition that could cause the engine coolant thermostat to open at a lower temperature than inten… |
| N252502891 | Service campaign | Jul 16, 2025 | Customer Satisfaction Program. Certain vehicles listed above may have a condition in which the internal differential nut was cross threaded… |
| N252502890 | Service campaign | Jul 16, 2025 | Customer Satisfaction Program. Certain vehicles listed above may have a condition in which the internal differential nut was cross threaded… |
| 00-06-01-026R | Service bulletin | Jun 5, 2025 | This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage. |
| 23-NA-153 | Service bulletin | May 15, 2025 | The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is… |
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 N262570770-02 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 N262570770-02 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 N262570770-02 cover?
The manufacturer filed it against 8 model years across 2 brands (Chevrolet and Cadillac): 2025 Cadillac XT5, 2024 Cadillac XT5, 2023 Cadillac XT5, 2025 Cadillac XT6, 2024 Cadillac XT6, 2023 Cadillac XT6 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.