Stellantis bulletin 9100338REV1
What it says"GENERATOR Engine Prior to alternator/generator removal: 1. NHTSA’s full summary ↓
Stellantis filed this with NHTSA as a service bulletin dated May 21, 2024, received Jun 4, 2024, about the engine. It names 45 model years across Jeep, Ram, Dodge and Chrysler (2020–2024). 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.
One page for every brand it was filed under. Each brand’s bulletins: Jeep · Ram · Dodge · Chrysler.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communication"GENERATOR Engine Prior to alternator/generator removal: 1. Inspect & check all electrical connections to the alternator a. 2-way connector containing field control circuit & alternator sense voltage circuit. b. Unplug & plug-in the 2-way connector for field & sense circuit. Verify the connection is tight & check for any bent pins in alternator connector or damage to female terminals in connector. c. Check Alternator B+ Stud connection to be sure nut is securing positive cable terminal properly (i.e. nut is clamping terminal & connection is tight). d. Check fuse between the alternator B+ stud & PDC terminal to make sure it is not blown. e. Be sure to follow service manual sections on ALTERNATOR CONTROL CIRCUIT DIAGNOSTIC & ALTERNATOR SENSE CIRCUIT DIAGNOSTIC looking for any opens & shorts (to ground or battery voltage). 2. Check/verify all grounds in the charging system circuit a. Check tightness of mounting bolts securing alternator to engine block. Alternator is a case ground component. b. Check main ground from engine to chassis; connection must be tight. c. Check battery ground cable connections are tight. d. Potentially, loosen alternator mounting bolts, without removing alternator, and re-tighten to torque specifications in service manual. e. After all steps above are complete, re-start engine & check charging system operation. 3. Verify that the Smart Charging System is not the reason for alternator low voltage & current output (Amps). a. Alternator charging can be suspended during engine idle operation because of the Smart Charge strategy. b. Refer to service manual section ""System Operation - Smart Charging System"". c. Refer to Star Case S2008000031 Rev A for low charging voltage & Smart Charge Mode Voltage Range diagram & mode descriptions. d. The alternator has no internal regulator; thus, has no smart circuitry. All alternator control signals come from ECM. 4. If alternator is faulty, remove alternator & mounting bolts. Return alternator with bolts for analysis at QEC."
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 9100338REV1 | Service bulletin | May 21, 2024 | 11000824 | PDF, 62 KB |
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 themJeep 15 model years
Ram 20 model years
Also filed against model years this site has no page for: 2021 Ram 4500; 2022 Ram 4500; 2023 Ram 4500; 2024 Ram 4500.
Dodge 7 model years
Chrysler 3 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 41 model years this bulletin names have filed 6,666 complaints with NHTSA since 2015. 2,027 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.
On the 2024 Jeep Wrangler, the 57 owners who gave an odometer reading for Engine reported it at a median of 15,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
The contact owns a 2022 Ram 2500. The contact stated that while attempting to start the vehicle, there was a long crank time before the vehicle started. There were no warning lights illuminated. The vehicle was taken to the local dealer where it was diagnosed and determined that the ambient temperature sensor needed to be replaced.
2022 Ram 2500 · Engine · filed with NHTSA Dec 19, 2022 · ODI 11498098
The contact owns a 2021 Jeep Wrangler 4XE. The contact stated while driving at an undisclosed, the check engine warning light illuminated. The accelerator pedal was depressed, but the vehicle failed to accelerate as intended, hesitated and jerked. The vehicle was taken to the dealer however, the failure could not be duplicated.
2021 Jeep Wrangler · Engine · filed with NHTSA Nov 24, 2025 · ODI 11701300
While driving and slowing for a traffic light, my 2023 Ram 1500 Limited 4X4 began to immediately slow, and I observed the gear selector engage from drive to park, back to drive and back to park, and engaging the emergency brake. The vehicle ceased operating. I was able to engage the emergency flashers and restart the vehicle.
2023 Ram 1500 · Engine · filed with NHTSA Mar 23, 2024 · ODI 11579083
In depth: 2021 Jeep Gladiator engine problems → · 2020 Jeep Grand Cherokee engine problems → · 2024 Jeep Wrangler engine problems → · 2023 Jeep Wrangler engine problems →
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 group298 other manufacturer communications filed against these Stellantis models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Jeep list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 09-027-26 | Service bulletin | Oct 17, 2026 | Engine Coolant Leak The customer may comment on the following: SYMPTOM: ● There is an external coolant leak near the exhaust side of the eng… |
| 09-026-26 | Service bulletin | Oct 16, 2026 | Not applicable to vehicles built for US market. Low Oil Pressure Customers may experience a Malfunction Indicator Lamp (MIL) illumination. U… |
| 115228 | Service bulletin | Oct 15, 2026 | HOSE AND TUBE - HEATER SUPPLY AND RETURN |
| 115227 | Service bulletin | Oct 15, 2026 | HOSE AND TUBE - HEATER SUPPLY AND RETURN |
| 115202 | Service campaign | Oct 14, 2026 | Revised Customer Satisfaction Notification 66D – Spark Plugs - Dealer Notification |
| 09-025-26 | Service bulletin | Oct 13, 2026 | Starter Terminal Nut Under Torqued Customers may comment on one or more of the following: SYMPTOM: ● Starter clicking but not starting. ● No… |
| 18-081-26 | Service bulletin | Oct 8, 2026 | Not applicable to vehicles built for US market. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indica… |
| 18-080-26 | Service bulletin | Oct 8, 2026 | Not applicable to vehicles built for US market. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indica… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Jeep, Ram, Dodge and Chrysler, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Stellantis 9100338REV1 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 9100338REV1 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 9100338REV1 cover?
The manufacturer filed it against 45 model years across 4 brands (Jeep, Ram, Dodge and Chrysler): 2023 Chrysler 300, 2022 Chrysler 300, 2021 Chrysler 300, 2023 Dodge Challenger, 2022 Dodge Challenger, 2021 Dodge Challenger and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.