2021 Chevrolet SILVERADO 1500 Manufacturer communications & TSBs.Page 15
Original record summaries, dates and identifiers for this model-year. Records 1,401–1,459 of 1,459, ordered newest first. Dated records on this page: Apr 7, 2020–Nov 23, 2020.
Read the applicability before drawing a conclusion.
This archive includes service bulletins, warranty notices, software instructions and other communications. Records may repeat or supersede earlier instructions. A model-year association is not proof that a document covers every engine, trim, VIN or reported symptom, or that a repair is free.
NHTSA download snapshot: Sep 28, 2026. These are communication associations for this vehicle, not unique defects. How records are joined and counted.
Nov 23, 2020Service Bulletin/Repair Instructions
20NA078
NHTSA communication ID: 10184484
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides a procedure to replace the 4 5 6 clutch housing if the bushing was found worn and the cause of the customers concern.
Source components: EQUIPMENT · EQUIPMENT ADAPTIVE/MOBILITY · POWER TRAIN:CLUTCH ASSEMBLY.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Service Update. Certain vehicles may present a broken engine valve spring. This may cause the engine to run rough, an engine knocking or ticking noise, a check engine light illumination, or a possible vehicle stall. Dealers are to perform the inspection procedure contained within this bulletin.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates A Vehicle may have a concern of service engine light, misfire and engine noise with possible of DTC P0300 P0106 P0506, Possible valve spring concern
Source components: ELECTRICAL SYSTEM · ENGINE · EQUIPMENT.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to a noise coming from the window regulator area.
Source components: EQUIPMENT · VISIBILITY:POWER WINDOW DEVICES AND CONTROLS.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the airbag lamp illuminated on the driver?s information center (DIC).
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates that engineering is Work on a Software fix for some radio apps not Opening, Connected Navigation (live traffic, etc.) is not functioning (base navigation functions correctly)
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates a condition where the radio may display a :connection not availale, please call OnStar agent". This bulletin advises that Engineering is working on a software solution that will prevent the message from displaying when listening to non-SXM sources, but still allow the message to display when a loss of connectivity exists and the user is attempting to play Sirius XM.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin provides information on Clean Exhaust Filter See Owners Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared messages Displayed on DIC, DTC P2463 May Be Set.
Source components: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM · EQUIPMENT.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates A Vehicle may have a concern of service engine light, misfire and engine noise with possible of DTC P0300 P0106 P0506, Possible valve spring concern
NHTSA source summary · Original PDF not reviewed by Recallfolio
This service bulletin provides information and a service procedure for dealers/technicians on OnStar Over the Air Update for TTY / TDD Operation and Continuous Improvement Changes.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician how to repair vehicles that Instrument Panel Cluster, Radio, and Heater-Vent-Air Conditioning display blanks out, Bluetooth phone or Pandora connection dropped, the radio station or volume changes when operating the snow plow. Please advise the customer that engineering is aware of this concern and working on this issue.
NHTSA source summary · Original PDF not reviewed by Recallfolio
The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
Source components: ELECTRICAL SYSTEM · EQUIPMENT · POWER TRAIN:AUTOMATIC TRANSMISSION.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This service bulletin provides information to correct a customer concern of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part.
Source components: ENGINE AND ENGINE COOLING:ENGINE:DIESEL · FUEL SYSTEM, DIESEL.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This service bulletin provides information for dealers/technicians on Normal Characteristic - Wireless Phone Projection Audio Cuts Out Every 10 Seconds on New/Unsold Vehicles.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards check to the engine lamp being illuminated on the drivers information center (DIC).
NHTSA source summary · Original PDF not reviewed by Recallfolio
This warranty administration bulletin provides information on Warranty Administration - Customer Concern Not Duplicated (CCND) Labor Operation Numbers.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates an issue with poor heater performance and advises dealerships to inspect the heater core inlet and outlet hoses for being twisted or kinked.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting. This is normal when the FAB has been set to "Alert".
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA) (US dealers only).
NHTSA source summary · Original PDF not reviewed by Recallfolio
This bulletin provides information on the Transport Mode On Message Being Displayed in the Driver Information Center (DIC) and/or Battery Light is Flashing and the procedures to turn the Transport Mode message ON and OFF.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides a repair procedure to correct a customer concern of Delayed and/or Harsh Engagement of Transmission Shift After Vehicle Sitting with Engine Off.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This bulletin provides information on the Transport Mode On Message Being Displayed in the Driver Information Center (DIC) and/or Battery Light is Flashing and the procedures to turn the Transport Mode message ON and OFF.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to a noise coming from the window regulator area.
Source components: VISIBILITY:POWER WINDOW DEVICES AND CONTROLS.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin explains possible normal condition of a flare from 1st to 2nd, even if the trans had been repaired for the flare and its still noticed.
Source components: POWER TRAIN:AUTOMATIC TRANSMISSION.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before sold (prepping) to the customer.