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Service bulletins for the 2020 Jeep Gladiator

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.

684 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
90042922020-09-28. Service bulletin. EQUIPMENT; POWER TRAIN:TRANSMISSION CASE/HOUSING. TRANSFER CASE ASSY For concern of transfer case input seal leak at main lip seal. Call FCA Redacted Content to confirm if T-case should be sent back to QEC.
90042822020-09-28. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT; EQUIPMENT ADAPTIVE/MOBILITY. PAN AND FILTER, Transmission Oil / GASKET, Oil Pan Prior to replacing the transmission oil pan or replacing the oil pan gasket for a leak in the oil pan area, please contact FCA Redacted Content. The CST will review root causing steps and suggest if the part is required to be returned back to FCA.
W452020-07-27. Service bulletin. POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT; SUSPENSION:FRONT:SHOCK ABSORBER. Customer Satisfaction Notification W45 Front Axle Bracket
657102020-07-27. Service bulletin. EQUIPMENT; POWER TRAIN:CLUTCH ASSEMBLY. Safety Recall W12 JL/JT Clutch Update to Dealer Instructions for Parts Ordering
S20080000752020-07-27. Service bulletin. POWER TRAIN. No Start, Start Stop Inoperative, Cluster Messages to Service Shifter or Service Start Stop System
S18210000052020-06-22. Service bulletin. POWER TRAIN; EQUIPMENT; TIRES. Required Updates When Changing Tire Sizes, Installing Mopar Lift Kits With Larger Tires, Manual Transmission Vehicles Setting DTC P08A6
21-034-202020-05-26. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience the following condition:A loud whistle noise upon engine start up.
S20250000022020-05-26. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Customer complaint includes check engine/MIL light on. Upon further inspection, fault codes will be found in the powertrain control module (PCM) for P0441, P0443 or P0449. Fault codes may be either active or stored.
08-021-20 REV. A2020-05-18. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM. Body Control Module (BCM) Reconfigure for Enabling the Selectable Tire Fill Alert (STFA) Settings This bulletin involves reconfiguring the BCM to enable the STFA settings.This re-configuration will enable the STFA (sales code LA5). Customer does not have Selectable Tire Fill Alert due to a late feature availability.Selectable Tire Fill Alert (STFA) Function: (https://www.youtube.com/watch?v=znqYo86deCg)
18-055-19 REV. A2019-12-16. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. 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 the technician may find one or more ofthe following DTCs.P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification test (SLVT)to determine if a leak is present in the system. P1404 - EGR Close Position Performance. P1206 - Fuel Pump Control Module Open Circuit To Fuel Pump. Upon diagnosing the vehicle the technician may find DTC P1206 set before flashing the vehicle, the correct DTC will nowbe P025A - Fuel Pump Module Control Circuit Open after the software update.In addition the customer may notice one or more of the following:The customer may notice an ability to shift into 1st gear at an unsafespeed(MTX Only). Cluster displays "Autopark Engaged" even when autopark is no longer active.
90041502019-12-02. Service bulletin. FUEL SYSTEM, GASOLINE; POWER TRAIN. SEAL, Input If looking to replace stubshaft due to ATX fluid leaking, do not replace PTU seals. None of the seals from the PTU side will need to be replaced whenever the ATX stubshaft is replaced, even though V-seal (68408748A$) is in direct contact with the stubshaft, it will not avoid grease/oil leakage from transmission side. PTU V-seals are intended to act as a dust cover for stubshaft - PTU input shaft spline interface. PTU Input shaft seal (68408749A$) is intended to hold PTU oil and debris ingress; it should be replaced only if the fluid leakage is confirmed to be PTU oil and not ATX trans. fluid.
90040832019-07-15. Service bulletin. POWER TRAIN. MODULE KIT, Fuel Pump/Level Unit 2020MY JT with 3.6L If a vehicle comes in with a P0461 code stored and possibly accompanied with a complaint of the fuel level gauge stuck at 7/8 of a tank, and the vehicle was built prior to 5/17/2019, please confirm electrical function of fuel level sensor call Anthony Reyes at (248) 462-4388. If no response in 15 minutes, proceed with repair. If vehicle was built on or after 5/17/2019, disregard this message and continue with normal repair.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.