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Manufacturer communication · Service bulletin

Jeep bulletin 0901523

What it saysLower Radiator Hose not Properly Seated Customers may experience the following: ? NHTSA’s full summary ↓

Jeep filed this with NHTSA as a service bulletin dated Sep 22, 2023, received Sep 25, 2023, about the engine — 3 documents under this number. It names 1 model year (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 communication

Lower Radiator Hose not Properly Seated Customers may experience the following: ? Engine coolant leak underneath the vehicle This bulletin involves inspecting and if necessary re-seating the lower radiator hose.

Kind Service bulletin Manufacturer date Sep 22, 2023 Received by NHTSA Sep 25, 2023 Components Engine First dated Jul 22, 2023

Documents filed under this number

DocumentKindDatedNHTSA idAt NHTSA
0901523Service bulletinSep 22, 202310248621not found
0901523Service bulletinSep 22, 202310244460not found
0901523Service bulletinJul 22, 202310242822not found

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 radiator assembly for the 2023 Gladiator →

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Model years it names

Source: as the manufacturer filed them

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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A weekly email, sent only in a week when Jeep files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.

What owners reported

Source: NHTSA complaint database

Owners of the 1 model year this bulletin names have filed 57 complaints with NHTSA since 2015. 7 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.

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 group

30 other manufacturer communications filed against the Jeep Gladiator under the same component group (engine), newest first. The eight newest are listed; the rest are on the Jeep list.

NumberKindDatedNHTSA’s summary
113835Service bulletinAug 5, 2026COVER - CYLINDER HEAD
113271Service bulletinJul 7, 2026CORE – HEATER
112842Service bulletinJun 18, 2026BOLT - HEX FLANGE HEAD
S2609000009Service bulletinJun 15, 2026Check Engine Light (CEL) Illuminated with Diagnostic Trouble Code (DTC) P0106 Manifold Absolute Pressure Sensor Performance Setting In The P…
18-045-26Service bulletinApr 16, 2026Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle mus…
111406Service bulletinApr 8, 2026COVER - CYLINDER HEAD
111405Service bulletinApr 8, 2026COVER - CYLINDER HEAD
18-044-26Service bulletinMar 21, 2026Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle mus…

Quote the number at the service desk. It is what the dealer’s system is keyed on.

Every manufacturer communication NHTSA holds for Jeep, by the number printed on the letter.

Photo: Christian Buehner / Unsplash

Common questions

Source: NHTSA, 49 CFR 579.5

Is Jeep 0901523 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 0901523 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 Stellantis warranty extension on file lists the ones Stellantis has filed.

Which vehicles does 0901523 cover?

The manufacturer filed it against 1 model year: 2023 Jeep Gladiator. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.