Official manufacturer communications

NHTSA service bulletins and manufacturer communications

Recent manufacturer communications can explain known service procedures, software updates, warranty extensions and repair guidance that may matter before you buy a used car.

158,311indexable service bulletin pages
1,187,718official source rows
1995-2026source years
Jun 2026last generated

Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.

256,330 service bulletin records are available. 98,019 thin official-summary records are kept out of XML sitemaps and noindexed until richer source context is available.

How to use these pages

A service bulletin is not the same thing as a safety recall. Start with recall campaign pages, then use these bulletins to understand known service patterns, software updates and warranty communications. For model-level owner issues, compare the same vehicle against common problem pages and then run the exact VIN from the listing.

If you are still learning the basics, read how to check a VIN, then use the used-car buying checklist before making an offer.

11034038: Buick Acadia

Fixes to help prevent loss of functionality for connectivity features such as OnStar, Wi-Fi, Navigation, and Super Cruise.

2023-2026 · Manufacturer communication · 21 affected product rows

11034031: Genesis G80 Electrified

Genesis is extending the warranty coverage for the Integrated Charging Control Unit (ICCU) and ICCU fuse to 15 years/180,000 miles from the date of original retail delivery or date of first use (whichever occurs first) and is valid for.

2023-2025 · Warranty program / extension · 3 affected product rows

11034030: Genesis G80 Electrified

Genesis is extending the warranty coverage for the Integrated Charging Control Unit (ICCU) and ICCU fuse to 15 years/180,000 miles from the date of original retail delivery or date of first use (whichever occurs first) and is valid for.

2023-2025 · Warranty program / extension · 3 affected product rows

11034029: Genesis G80 Electrified

Genesis is extending the warranty coverage for the Integrated Charging Control Unit (ICCU) and ICCU fuse to 15 years / 180,000 miles from the date of original retail delivery or date of first use (whichever occurs first) and is valid for.

2023-2025 · Warranty program / extension · 3 affected product rows

11034028: Hyundai Palisade

Some Palisade (LX2) vehicles may display a Check forward safety systems warning message on the cluster along with DTC C272246, due to the front view camera calibration range being exceeded. This bulletin provides instructions to replace.

2023-2025 · Manufacturer communication · 1 affected product row

11034027: Hyundai Palisade

Some Palisade (LX2), Tucson (NX4), and Tucson Hybrid (NX4 HEV) vehicles may experience battery drain due to continuous operation of the cooling fan after vehicle ignition has been turned off, potentially resulting in a no-start condition..

2020-2026 · Manufacturer communication · 3 affected product rows

11034026: Genesis G80

Your vehicle may exhibit battery drain due to the Central Control Panel (CCP) not entering sleep mode. At Genesis, we are committed to providing vehicles of outstanding quality and value. In an effort to meet this commitment, Genesis is.

2025 · Service campaign · 2 affected product rows

11034025: Thermo King Rlfe1hpmv

Thermo King engineering and regional managers have observed instances of thermal overload breakers tripping under high ambient temperatures. Thermo King has determined that it is permissible and advisable to set the thermal breakers to.

model years not specified · Manufacturer communication · 6 affected product rows

11034024: Cadillac Lyriq

This Preliminary information communicates how to recover the Image Processing Module.

2023-2026 · Manufacturer communication · 1 affected product row

11034023: Cadillac Blazer EV

This Preliminary Information communicates that, under certain conditions, a MIL (Malfunction Indicator Lamp) illumination or a "Service High Voltage" message may display on the IPC (Instrument Panel Cluster), and the 12V battery may.

2023-2026 · Manufacturer communication · 6 affected product rows

11034022: Buick Encore Gx

This PIP communicates the potential for the engine to stall or stumble when coming out of an auto stop event

2026 · Manufacturer communication · 2 affected product rows

11034021: Buick Acadia

This preliminary information is to inform technicians and customers that the HUD will not retain its current settings. No parts should be replaced.

2024-2026 · Manufacturer communication · 9 affected product rows

11034020: Cadillac Escalade

This Preliminary information communicates an issue with the DRL or turning signal being inoperative and dealership are to replace the head light assembly.

2025, 2026 · Manufacturer communication · 2 affected product rows

11034019: Ford F-150

Some 2021-2026 F-150 vehicles may exhibit a U2100:00 diagnostic trouble code (DTC) for initial configuration incomplete stored in the trailer control module (TRM). This may be due to the vehicle having a Ford accessory trailer brake kit.

2021-2026 · Manufacturer communication · 1 affected product row

11034018: Thermo King Rlf2e

Thermo King engineering and regional managers have observed instances of thermal overload breakers tripping under high ambient temperatures. Thermo King has determined that it is permissible and advisable to set the thermal breakers to.

model years not specified · Manufacturer communication · 1 affected product row

11034017: Ford Bronco Sport

Some 2020-2026 Corsair/Escape, 2021-2026 Bronco Sport, and 2022-2026 Maverick vehicles equipped with an 8F35 transmission may exhibit a shudder condition, most noticeable at speeds below 60 mph (100 km/h), with no relevant diagnostic.

2020-2026 · Manufacturer communication · 4 affected product rows

11034015: Ford Bronco

This bulletin supersedes 26-2006. Reason for update: update the Parts list to correct the ambient air temperature service part number. Some vehicles listed in the model statement above may require the replacement of the ambient air.

2021-2025 · Manufacturer communication · 1 affected product row

11034014: Brightdrop 600 Elcv

This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace.

2024-2026 · Manufacturer communication · 25 affected product rows

11034013: Chevrolet Sierra 1500

This document restricts dealers from ordering an engine assembly. The technician must contact GM Technical Assistance to have diagnostics verified and that an engine assembly is needed.

2019 · Manufacturer communication · 2 affected product rows

11034011: Ford Aviator

This article supersedes 25-2302. Reason for update: update the labor time allowance for F-150 vehicles, update the Parts list to replace the part number W716979-S439 with W721084-S439, and add a note for LV fluids XT-10-QLVC and.

2020-2023 · Manufacturer communication · 3 affected product rows

11034001: Cadillac Canyon

This PI provides diagnostic steps for dealer technicians to verify the condition and ensure that part replacement is necessary

2020-2026 · Manufacturer communication · 18 affected product rows

11034000: Chevrolet Bolt EV

This information addresses a potential software anomaly that may cause a MIL illumination, a Service High Voltage message on the IPC, and, when the DTC is current, a no-start condition while the vehicle is in Run/Propulsion mode. If one.

2027 · Manufacturer communication · 1 affected product row

11033999: Cadillac Blazer EV

This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru TAC.

2024-2027 · Manufacturer communication · 5 affected product rows

11033998: Buick Encore Gx

This document is a technical bulletin regarding CarPlay issues in certain Buick and Chevrolet models. It details the problem, cause, and current status of the software anomaly affecting CarPlay connectivity.

2024-2026 · Manufacturer communication · 4 affected product rows

11033997: Cadillac Escalade

This PI informs General Motors dealers that programming for the Image Processing Module is currently unavailable and provides the process to obtain required programming

2026 · Manufacturer communication · 6 affected product rows

11033991: Chevrolet Canyon

This PI describes a condition where U0288 will falsely set. Engineering is aware of the issue and working on the resolution.

2026 · Manufacturer communication · 2 affected product rows

11033990: Chevrolet Equinox

This PI communicates a possible speedometer and/or odometer error due to an error in the parts catalog

2025-2027 · Manufacturer communication · 2 affected product rows

11033988: Buick Canyon

This PI advises dealers that if DTC P0606 and/or P0607 are set in the K160 EBCM, additional diagnostic aids should be followed to ensure the module requires replacement

2023-2026 · Manufacturer communication · 4 affected product rows

11033987: Cadillac Acadia

This PI advises dealers that if the K160 Brake System Control Module sets DTC P0606 along with P0562 and/or P25A2, additional diagnostic aids should be followed before replacing parts. The PI provides guidance to inspect for low voltage.

2021-2026 · Manufacturer communication · 15 affected product rows

11033986: Cadillac Escalade

This Preliminary information communicates an issues with the HVAC making a hum buzz noise when the blower is set to a higher speed. Engineering is working on a new HVAC door seal material to correct the noise.

2021-2026 · Manufacturer communication · 12 affected product rows

11033985: Cadillac Escalade

This Preliminary information communicates an issue with a service door latch system messages. On Cadillac and Chevrolet models dealership are to cycle the child door latch on and off to correct the issue. On GMC models reprogram the BCM.

2025, 2026 · Manufacturer communication · 6 affected product rows

11033984: Cadillac Escalade

This PI communicates information on isolating a wind noise from the driver front door.

2026 · Manufacturer communication · 6 affected product rows

11033983: Maserati Ghibli

This bulletin provides updated information and further clarification regarding the replaceability of the thermostat gasket on V6 engines installed on Quattroporte, Ghibli and Levante.

2004-2024 · Manufacturer communication · 6 affected product rows

11033982: Maserati Grancabrio Folgore

This bulletin provides updated information and further clarification regarding To avoid replacing the entire high voltage batterywith the resulting impact on both costs and vehicle downtimedue to certain fuses within the battery, it has.

2025, 2026 · Manufacturer communication · 2 affected product rows

11033975: Chrysler 1500

Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.

2013-2026 · Manufacturer communication · 15 affected product rows

11033971: Dodge Charger

If The Hood Will Not Fully Release When Button On The Dash Is Pressed Or The Hood Will Not Fully Latch.

2024-2026 · Manufacturer communication · 3 affected product rows

11033970: Jeep Grand Cherokee

Service 4WD Message, With Any Combination Of The Following Front Axle Disconnect (FAD) Diagnostic Trouble Codes

2021-2026 · Manufacturer communication · 3 affected product rows

11033965: Jeep Grand Cherokee 4xe

ID-26-24 Rev. A (XC2) 2.0L PHEV Engine - Select 2024 - 2025 Jeep Wrangler (JL) and 2023 - 2025 Grand Cherokee/ Grand Cherokee L (WL)

2024, 2025 · Manufacturer communication · 2 affected product rows

11033962: Jeep Grand Cherokee 4xe

D-26-11 Rev. A (XC2) 2.0L PHEV Engine - Select 2024 - 2025 Jeep Wrangler (JL) and 2023 - 2025 Grand Cherokee/ Grand Cherokee L (WL)

2024, 2025 · Manufacturer communication · 2 affected product rows

11033961: Ram 1500

3-way valves are available in STAR Parts as two distinct components and must be selected correctly based on application. The High Temp 3-way valve (68309834AC) is located between the engine and the bulkhead at the rear of the engine.

2019-2027 · Manufacturer communication · 1 affected product row

11033960: Jeep Grand Wagoneer

Power Side-Steps/Running Boards not working properly, stuck or inoperable due to DTCs: B1DB2-13 - Left Power Side Step Motor - Circuit Open / B1DB3-13 - Right Power Side Step Motor - Circuit Open B1DB4-39 - Left Power Side Step Position.

2026 · Manufacturer communication · 2 affected product rows

11033959: Dodge 1500

Before replacing the starter, please follow the published diagnostics in the Service Information at 08 - Electrical / 8F - Engine Systems / Starting / Diagnosis and Testing / STANDARD STARTING SYSTEM. Updates to this procedure have been.

2022-2026 · Manufacturer communication · 4 affected product rows

11033958: Jeep 1500

Before replacing any parts check for applicable TSBs/RSUs. If no applicable TSBs/RSUs, or they have already been applied, please refer to the updated Service Library diagnostic procedure for P1CEA-00-BOOST SIDE EVAP PURGE SYSTEM.

2022-2026 · Manufacturer communication · 3 affected product rows

11033957: Chrysler 2500

Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.

2017-2026 · Manufacturer communication · 13 affected product rows

11033956: Jeep Grand Cherokee

Ambient cabin light fault B2811-02 inop. If Ambient Lights can change color and intensity, do not replace Auxiliary/Ambient Lighting Module (ALM). Follow the diagnostic for B2811-02. Before replacing, verify the vehicle PROXI is correct.

2023-2027 · Manufacturer communication · 5 affected product rows

11033950: Jeep Grand Wagoneer

Door Nameplate Missing Customers may comment on the following: The door nameplate is missing on the right and/or left front door. This bulletin involves inspecting and possibly replacing one or both front door nameplates.

2026 · Manufacturer communication · 2 affected product rows

11033949: Jeep Cherokee

Headlamp Aiming Customers may comment on the following: The left headlamp is horizontally misaligned or incorrect This bulletin is to properly aim the left headlamp.

2026 · Manufacturer communication · 1 affected product row

11033948: Ram 1500

Instrument Panel Delamination Customers may comment on the following: Wrinkles or bubbles in the instrument panel cover Fig. 1. This bulletin involves inspecting and possibly replacing the instrument panel cover.

2019-2022 · Manufacturer communication · 1 affected product row