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Service bulletin S2123000046

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10221270
Published by NHTSA2022-09-26
Manufacturer's numberS2123000046
Manufacturer's date2021-06-11
NHTSA componentSUSPENSION

NHTSA's summary

Click Noise From Front End While Driving And Or Turning

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Suspension

Vehicles listed
JEEP GLADIATOR2020, 2021
JEEP WRANGLER2018, 2019, 2020, 2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20V0420002020-01-24. SUSPENSION:FRONT:CONTROL ARM:LOWER ARM

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
91007562026-02-19. Service bulletin. DO NOT REPLACE MULTIPLE SHOCKS UNLESS ALL ARE VERIFIED TO BE DEFECTIVE. Reference Master Tech article released in January 2026 for updated diagnostic and testing procedures. Master Tech link: https: //mastertech.playerlync.net/app/player/p2tQVm
91007562026-02-04. Service bulletin. DO NOT REPLACE MULTIPLE SHOCKS UNLESS ALL ARE VERIFIED TO BE DEFECTIVE. Reference Master Tech article released in December 2025 for updated diagnostic and testing procedures. Master Tech link: https: //mastertech.playerlync.net/app/player/p2tQVm
S1819000004 REV.R2025-12-11. Service bulletin. Shimmy Felt In Front End
02-002-25 REV. A2025-09-17. Service bulletin. Shock And Strut Diagnosis And Replacement Guidelines Leaking, noisy, or weak shocks or struts.
1063522025-09-10. Service bulletin. SHOCK ABSORBER – SUSPENSION & SHOCKS - REAR
02-002-252025-05-30. Service bulletin. "Shock And Strut Diagnosis And Replacement Guidelines Leaking, noisy, or weak shocks or struts. "
S2123000046 REV.B2024-08-26. Service bulletin. Click Noise From Front End While Driving And Or Turning.
91002292023-10-30. Service bulletin. LIFTER, Hydraulic Roller Deactivating Please do not replace MDS lifters because the disconnecting pin is not lined up, this is normal and not a defect.
S23020000012023-04-17. Service bulletin. Service Air Suspension Message In Cluster. C15AD-92-Ride Height System- Performance In Below Freezing Temperatures.
18-002-22 REV. A2023-01-17. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find one or more of the following DTCs have been set: P016F - Closed Loop Fuel Pressure Control At Limit - Pressure Too Low. P025C - Fuel Pump Module Control Circuit Low. P0300-00 - Multiple Cylinder Misfire. P0301-00 - Cylinder 1 Misfire. P0302-00 - Cylinder 2 Misfire. P0303-00 - Cylinder 3 Misfire. P0304-00 - Cylinder 4 Misfire. P0305-00 - Cylinder 5 Misfire. P0403-00 - EGR Control Circuit Open (Disabled Fault). P208B - Reductant Pump 1 Control Performance. P04DB - Crankcase Ventilation System Disconnected. P040F - EGR Temperature Sensor A-B Correlation. P225D - Nox Sensor 1/1 Performance - Signal Stuck Low. P0088 - Fuel Rail Pressure Too High. P0404 - EGR ?A? Control Circuit Range/Performance. P20C6 - Reductant Heater 4 Control Circuit Performance. P0524 - Low oil pressure (during start up in cold ambient temps). P249C-00 - Excessive Time To Enter Closed Loop Reductant Injection Control. P02E8-00 - Diesel Intake Air Flow Position Sensor Circuit Low. P20FB-00 - Reductant Pump 2 Control Performance. P065A-00 - Generator System Performance. Customers may experience one or more of the following: Slow acceleration. Reduced vehicle speed&torque in high and 4 low. Poor cold idle stability. Poor idle quality with AC on. Excessive engine speed oscillations at tachometer red-line. Following a long key-on situation, poor cold start and idle stability. Cold hard start/extended crank. Block heater not providing a proper cold start and stable idle. High idle speeds at altitude when remote start is active. The cruise control and speed limited set speed doesn?t match the speedometer. It could be up to 2.5 kph (1.5 mph) difference. Other Software enhancements:Low speed engine idle improvements. Improved engine restart performance