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Service bulletins for the 2020 Chevrolet Silverado

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.

2120 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Fuel system are shown. Show all

Bulletins, newest first
22-NA-1502023-10-18. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL; ELECTRICAL SYSTEM; EQUIPMENT. This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset.
20-NA-0822023-09-06. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. This informational bulletin explains why more DEF is being used in diesel engines due to new emission standards.
18-NA-1032023-09-01. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL. This service bulletin provides service information for customer concerns of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated that may be caused by gelling of fuel in cold temperatures.
16-NA-2442023-09-01. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL. This informational bulletin provides information on Diesel Exhaust Fluid (DEF) and the proper use of the DEF system.
10-06-05-002M2023-08-28. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This informational bulletin provides information on Clean Exhaust Filter See Owner Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared messages Displayed on DIC, DTC P2463 May Be Set.
04-06-04-051H2023-08-28. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
03-06-04-017T2023-08-28. Service bulletin. FUEL SYSTEM, DIESEL. This service bulletin provides information on availability of Diesel Fuel additives.
23-NA-0272023-07-26. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to test and replace the high-pressure fuel injector electrical connectors if found the cause of the MIL.
22-NA-1502023-06-05. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset.
23-NA-0272023-05-06. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL. This technical bulletin provides a procedure to test and replace the high-pressure fuel injector electrical connectors if found the cause of the MIL.
19-NA-2372023-05-03. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING. This service bulletin explains how to identify possible DEF system contamination.
PIT5636C2023-04-17. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM. This Preliminary information communicates an issues with a SES MIL and DTC P1005 and to replace the fuel pump driver control module with an updated part number.
23-NA-0272023-04-14. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL. This technical bulletin provides a procedure to test and replace the high-pressure fuel injector electrical connectors if found the cause of the MIL.
21-NA-0432023-04-13. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; WHEELS; ENGINE AND ENGINE COOLING. This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
03-06-04-017S2023-04-13. Service bulletin. FUEL SYSTEM, DIESEL. This service bulletin provides information on availability of Diesel Fuel additives.
23-NA-0272023-04-12. Service bulletin. FUEL SYSTEM, DIESEL; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to test and replace the high pressure fuel injector electrical connectors if found the cause of the MIL.
16-NA-2442023-04-06. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This informational bulletin provides information on Diesel Exhaust Fluid (DEF) and the proper use of the DEF system.
18-NA-3612023-03-30. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL. 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.
PIT5732C2023-03-13. Service bulletin. FUEL SYSTEM, GASOLINE; STRUCTURE. This Preliminary information provides information to the technician on relocating the DEF tank to install a service body. Technician will need to reference the latest version of General Motors Up-fitter Integration Bulletin 156. The information can be found at http://www.gmupfitter.com/ under the "Technical Bulletin" Tab and then "Show all bulletins."
PIT5691C2023-03-13. Service bulletin. FUEL SYSTEM, GASOLINE. This Preliminary information communicates the need to Reference the latest version of GM Upfitter Integration Bulletin 149 for deleting the front or rear fuel tank of a chassis cab truck with RPO NSQ dual fuel tanks.
PIT5161J2023-02-13. Service bulletin. FUEL SYSTEM, GASOLINE. This Preliminary Information communication provides information to the technician about vehicles that may have a bump feel or clunk noise at a stop or on launch. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle. The bump clunk issue may be due to fuel movement in the fuel tank when not completely full. The condition is eliminated after completely filling the fuel tank.
18-NA-3612022-12-03. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL. 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.
21-NA-0062022-10-28. Service bulletin. FUEL SYSTEM, DIESEL; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This bulletin provides a possible location of a bad connection at the reductant fluid tanks electrical connector.
PIT5723A2022-10-17. Service bulletin. FUEL SYSTEM, GASOLINE:STORAGE:EVAPORATIVE EMISSIONS:CANISTER; FUEL SYSTEM, GASOLINE. This Preliminary information communicates information that the EVAP purge pump may be filling with liquid fuel if the customer overfills the fuel tank by over 3 clicks of a normal filler nozzle. Reference N202324990: Special Coverage - Evaporative Emissions Purge Pump for repair information
03-06-04-017R2022-10-13. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL. This service bulletin provides information on availability of Diesel Fuel additives.

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