# Service bulletin 110448

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11029763
- Published by NHTSA: 2026\-03\-05
- Manufacturer's number: 110448
- Manufacturer's date: 2026\-02\-23
- NHTSA component: ENGINE

## NHTSA's summary

WATER PUMP

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11029763-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11029763-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2019 to 2026 CHRYSLER PACIFICA
- 2019 to 2026 CHRYSLER PACIFICA PLUG\-IN HYBRID
- 2020 to 2026 CHRYSLER VOYAGER
- 2019 to 2026 DODGE DURANGO
- 2019 to 2026 JEEP GRAND CHEROKEE
- 2021 to 2026 JEEP GRAND CHEROKEE L
- 2019 to 2026 RAM PROMASTER

## Recalls for the same vehicles and component

- [2025617](/recalls/tc/2025617.md), 2025-11-06: Engine
- [25V766000](/recalls/nhtsa/25V766000.md), 2025-11-06: ENGINE
- [24V926000](/recalls/nhtsa/24V926000.md), 2024-12-12: STRUCTURE:FRAME AND MEMBERS; FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
- [2023338](/recalls/tc/2023338.md), 2023-06-08: Engine
- [23V412000](/recalls/nhtsa/23V412000.md), 2023-06-08: ENGINE
- [23V411000](/recalls/nhtsa/23V411000.md), 2023-06-08: ENGINE AND ENGINE COOLING
- [2022217](/recalls/tc/2022217.md), 2022-04-28: Engine
- [22V284000](/recalls/nhtsa/22V284000.md), 2022-04-28: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\)
- [2020544](/recalls/tc/2020544.md), 2020-11-12: Engine
- [20V699000](/recalls/nhtsa/20V699000.md), 2020-11-12: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\)

## Other bulletins for the same vehicles and component

- [66D Combo Rev2](/bulletins/11038554.md), 2026-10-16, Service campaign: ENGINE. Revised Customer Satisfaction Notification 66D – Spark Plugs \- Dealer Notification
- [66D Combo Rev2](/bulletins/11038517.md), 2026-10-16, Service campaign: ENGINE. Revised Customer Satisfaction Notification 66D – Spark Plugs \- Dealer Notification
- [S2609000006 REV.A](/bulletins/11038333.md), 2026-10-07, Service bulletin: ENGINE. Customer indicates Malfunction Indicator Light \(MIL\) or Check Engine Light \(CEL\) coming on.
- [09\-013\-26 REV. A](/bulletins/11038310.md), 2026-10-07, Service bulletin: ENGINE. Engine Runs Rough Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes \(DTCs\): ● P0300\-00 \- Random/Multiple Cylinder Misfire Detected. ● P0301\-00 \- Cylinder 1 Misfire. ● P0302\-00 \- Cylinder 2 Misfire. ● P0303\-00 \- Cylinder 3 Misfire. ● P0304\-00 \- Cylinder 4 Misfire. Customers may also comment on the following: ● Engine runs rough. This bulletin involves replacing all four main chamber spark plugs.
- [09\-023\-26](/bulletins/11037570.md), 2026-09-30, Service bulletin: ENGINE. Umbrella Valve Seal Missing From Cylinder Head Cover Vehicle may exhibit a MIL\-ON. SYMPTOM: Upon inspection the technician may find that one or more of the following Diagnostic Trouble Codes \(DTCs\) have set: ● P0300\-00 \- Random/Multiple Cylinder Misfire Detected. ● P0301\-00 \- Cylinder 1 Misfire. ● P0302\-00 \- Cylinder 2 Misfire. ● P0303\-00 \- Cylinder 3 Misfire. ● P0304\-00 \- Cylinder 4 Misfire. This bulletin involves inspecting for a missing umbrella valve seal on the underside of the cylinder head cover and, if necessary, replacing the cylinder head cover.
- [S2609000011](/bulletins/11037354.md), 2026-09-17, Service bulletin: ENGINE. MIL\-On and/or Engine Oil Leak
- [9100898](/bulletins/11037347.md), 2026-09-17, Service bulletin: ENGINE. Engine PNs: MY 24\-26 WD/DT \(5.7L\) Code P00B is being misdiagnosed and incorrect parts are being installed causing over repair. Refer to SOL S2609000006 The IAFM Foam Engine Valley Cover \(PN 53013735AB\) does not provide sufficient clearance for proper routing of the MDS solenoid jumper harness \(PN 05148163AE\). As a result, the harness may become compressed by the foam cover. To prevent unnecessary part replacement, the MDS solenoid jumper harness \(PN 05148163AE\) should be inspected for damage or pinch conditions prior to replacing the following part numbers: Engine PNs: 68409343AA 68409357AA 68450915AA OCV PNs: 53022338AB Phaser PNs: 53022298AA 53022298AB
- [66D Combo Rev1](/bulletins/11036780.md), 2026-09-03, Warranty extension: ENGINE. CUSTOMER SATISFACTION NOTIFICATION NORTH AMERICA Spark Plugs Reference: 66D The spark plugs insulator on approximately 48,000 of the above vehicles may break due to excessive cylinder pressure. This pressure can cause the spark plug's ceramic insulator to crack, leading to a rough\-running engine. If this issue is not resolved promptly, the broken fragments can fall into the cylinder and cause internal engine damage.
- [114273](/bulletins/11036777.md), 2026-09-03, Warranty extension: ENGINE. D\-26\-18 Rev. A Dealer Incentive for the Completion of Customer Satisfaction Notification 66D
- [114275](/bulletins/11036776.md), 2026-09-03, Warranty extension: ENGINE. ID\-26\-38 Rev. A Dealer Incentive for the Completion of Customer Satisfaction Notification 66D

JSON: [/v1/bulletins/11029763](/v1/bulletins/11029763)

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