2026 Chevrolet Silverado 2500 TSBs

Improvements to accuracy for Diesel Exhaust Fluid level shown in driver display.

• Additional protection for the health of your battery • Updates to help prevent excessive battery drain and overheating • Improvements to the software update system • Improvements to reliability when extending the running boards on your vehicle

Certain vehicles may have a condition in which the bolts for the transmission control valve body may be loose or missing. Dealers will retorque or replace the suspect valve body bolts.

Certain vehicles listed above may be equipped with a trailer hitch label that understates hitch capability. Because this label can easily be installed by the customer, and to reduce their inconvenience, the corrected label and installation instructions will be mailed to…

Certain vehicles, equipped with Snowplow Prep Package RPO VYU, may be missing an accessory harness. Dealers are to include the Auxiliary Wiring Harness in the accessory pack for vehicles in dealer stock. Vehicles NOT in dealer stock will have the Harness installed by the dealer.

Certain vehicles may experience water intrusion due to a hole in the cabin Pressure Relief Valve. Dealers are to seal the hole using RTV sealant.

Certain vehicles listed above, may have a condition where the trailer hitch label understates hitch capability. Dealers will remove the sticker on trailer hitch.

• Improvements to audio system performance. ​​• Fixes to help ensure proper functionality for the center display. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the…

This update contains a required software change to help improve the overall software update and diagnostics process. Be sure to install this update to be able to receive future software updates.​​ • Improvements to help reduce check engine light activation and emissions system…

Certain vehicles may have a condition in which the Rear Spring U-bolt fasteners are torqued below specification. Dealers are to torque both the right and left side Rear Spring U-bolt fasteners to specification.

Service Update. Certain vehicles listed above may have a condition which can cause the fuel pump power control module to fail. If this were to occur, fuel flow to the engine could be interrupted. Dealers will replace the fuel pump power control module.

GM Update N25-F163BU This update contains a required software change to help improve the overall software update and diagnostics process. Be sure to install this update to be able to receive future software updates. During the update process, your radio may stay on up to 5…

• Improves how center display adjusts to lighting changes. • Improved warnings when a key is missing. • Better tuning for interior lighting in Stealth mode. • Improvements to automatic low beam headlamp logic. • Smoother dimming and transitions from day to night. During the…

This Preliminary Information (PI) relays to dealer technicians to replace the engine and turbocharger if there is a lack of lubrication to the rocker arms or rocker arm components.

This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is currently investigating.

This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position after curbview assist is used.

This PI communicates diagnostic information to assist Technicians with a possible transmission shudder

This PI provides information to repair the door water deflector which is not sealed properly allows water into the door jam/sill area.

This PI provides diagnostic tips for diagnosing electric trailer brakes issues.

PI to help diagnose A/C concern

This PI was created to help avoid unnecessary front camera module replacements

The purpose of this PI is to inform dealer technicians of a normal cab pressure relief valve noise to avoid unnecessary part replacement

This preliminary information communicates an issue with aftermarket LED lighting causing false front park assist alerts and dealers are to install the factory lighting before performing any in depth diagnostics.

This Preliminary information communicates information on a hydraulic rush type noise from the power steering gear. This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. The noise is most noticeable in the cab at idle, in…

This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.

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 conditions, wiring, terminal concerns, and…

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

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.

This Preliminary information communicates that the inner tailgate cannot be disabled if the vehicle is not equipped with passive entry.

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 the front camera module unless they have:…

This Preliminary information communicates recovery procedure after return to dealer message.

This preliminary information is to inform technicians and customers that the voice command will be inoperative when trying to open applications. Engineering is investigating and this PI will be converted to a bulletin when a repair is available.

This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.