Service bulletins for the 2018 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.
1747 on file from NHTSA, as of 2026-10-19.
By type
By component
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Only bulletins with component: Fuel system are shown. Show all
| N212338290 | 2021-08-09. Service bulletin. EQUIPMENT; FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. Special Coverage. Certain vehicles equipped with a 6.6L diesel engine (RPO L5P), may have a condition that could cause the engine glow plugs to fail. If this condition occurs, the Malfunction Indicator Light (Check Engine Light) will illuminate and a diagnostic trouble code will set. Additionally, the engine may be hard to start or the engine may run rough immediately following engine start. Dealers are to replace the glow plugs as necessary. The repairs will be made at no charge to the customer. |
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| 21NA124 | 2021-07-19. Service bulletin. FUEL SYSTEM, GASOLINE:STORAGE:EVAPORATIVE EMISSIONS:CANISTER. This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set. |
| 18NA361 | 2021-07-19. Service bulletin. FUEL SYSTEM, DIESEL; ELECTRICAL SYSTEM. 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. |
| 19NA153 | 2021-07-06. Service bulletin. FUEL SYSTEM, GASOLINE. This technical bulletin provides a procedure to replace the torque converter and inspect the front pump and the TEHCM for metal. |
| 18NA361 | 2021-07-06. Service bulletin. FUEL SYSTEM, GASOLINE. 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. |
| 17NA204 | 2021-05-24. Service bulletin. FUEL SYSTEM, GASOLINE. This technical bulletin provides a procedure to replace the fuel tank and internal parts if found expanding and contacting the drive shaft. |
| 20NA197 | 2021-05-03. Service bulletin. FUEL SYSTEM, GASOLINE. This technical bulletin provides a procedure to inspect and repair the fuel pressure sensor if found the cause of the customers concern. |
| PIP5163E | 2021-04-19. Service bulletin. FUEL SYSTEM, GASOLINE. This Preliminary Information communication provides information to the technician about engine block of possible cylinder bore damage, scoring or out of round as the possible cause of engine oil consumption, misfire, cylinder leakage or blow by. Technician will need to inspect the engine for Cylinder damage or scoring, An out of round cylinder bore, Dirt intrusion, and Catalytic Converter failure. |
| 20NA110 | 2021-03-01. Service bulletin. FUEL SYSTEM, DIESEL; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump. |
| 18NA285 | 2021-03-01. Service bulletin. EQUIPMENT; FUEL SYSTEM, OTHER:KINETIC:CLUTCH. This informational bulletin advises the tech of a possible normal condition when the vehicle creeps forward during start up conditions when the clutch packs are full of residual oil. |
| 030604017O | 2020-12-21. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. This Informational Bulletin provides information on availability of Diesel Fuel additives. |
| 20NA197 | 2020-12-21. Service bulletin. EQUIPMENT; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL. This technical bulletin provides a procedure to inspect and repair the fuel pressure sensor if found the cause of the customers concern. |
| PIT5161H | 2020-12-14. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; FUEL SYSTEM, GASOLINE; EQUIPMENT. 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. |
| 050604022R | 2020-12-07. Service bulletin. FUEL SYSTEM, DIESEL. 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. |
| 19NA237 | 2020-11-30. Service bulletin. FUEL SYSTEM, DIESEL; EQUIPMENT. This informational bulletin explains how to identify possible DEF contamination. |
| 20NA110 | 2020-11-30. Service bulletin. FUEL SYSTEM, DIESEL; FUEL SYSTEM, DIESEL:DELIVERY:FUEL PUMP. This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump. |
| 18NA361 | 2020-11-30. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:ENGINE: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. |
| 18NA150 | 2020-11-30. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, OTHER. This informational bulletin provides information on 6.6L Duramax Possible Oil Leak Path Information. |
| 18NA103 | 2020-11-30. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:COOLING SYSTEM:PUMP. 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. |
| 16NA376 | 2020-11-30. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; FUEL SYSTEM, DIESEL. This informational bulletin provides information on higher than expected oil consumption. |
| 16NA372 | 2020-11-30. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:DIESEL; FUEL SYSTEM, DIESEL. This bulletin provides information on common diesel engine tick noises and how they are considered part of normal operation and no parts should be replaced for these normal operating conditions. |
| 16NA244 | 2020-11-30. Service bulletin. EQUIPMENT; FUEL SYSTEM, DIESEL. This informational bulletin provides information on Diesel Exhaust Fluid (DEF) and the proper use of the DEF system. |
| 20NA197 | 2020-10-26. Service bulletin. EQUIPMENT; FUEL SYSTEM, GASOLINE:STORAGE:EVAPORATIVE EMISSIONS:HOSES/VALVES/SENSORS. This technical bulletin provides a procedure to inspect and repair the fuel pressure sensor if found the cause of the customers concern. |
| 20NA185 | 2020-10-26. Service bulletin. ENGINE; FUEL SYSTEM, OTHER; EQUIPMENT. This technical procedure provides a procedure to replace the front oil crank seal on remanufactured engines only, if found the cause of the customers concern. |
| 18NA361 | 2020-10-26. Service bulletin. FUEL SYSTEM, GASOLINE. 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. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.