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Service bulletins for the 2019 GMC Sierra

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.

2009 on file from NHTSA, as of 2026-10-19.

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By component

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

Bulletins, newest first
PIP5286B2019-07-08. Service bulletin. FUEL SYSTEM, GASOLINE. This Preliminary Information communication provides information to the technician for a vehicle setting both a P2635 and P018B diagnostic trouble codes. The following steps may help to determine if this is caused by a fuel pressure sensor not reading the low end of the pressure range. Technician is to make sure the engine is cold and install the Multiple Diagnostic Interface along with Global Diagnostic System 2. Navigate to fuel system depressurize and at engine idle depressurize the fuel system. The fuel pressure sensor value should drop to 0 and the engine will stall. If a sensor is causing this concern the suspected sensor will not drop to 0 the engine will stall however the sensor will still read 30 to 40 pounds per square inch.
PIT56852019-06-10. Service bulletin. FUEL SYSTEM, GASOLINE. This Preliminary information communicates the location that dealers can find information to remove / delete the rear fuel tank from Chassis Cab trucks with RPO N2N dual fuel tanks.
PIP56472019-06-10. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE. This Preliminary information communicates A vehicle may have a concern of running poor and stalling. No trouble codes may be set referencing this condition. Fuel trims around -20% may be observed on both banks. Engine oil level will be found over full and have a fuel odor. It will be found that the Engine oil is diluted with fuel. Small gas engines (SGE) May only have the engine oil level over full and have a fuel odor. It will be found that the Engine oil is diluted with fuel. This concern is caused by marshalling the vehicle around the lot before it is sold and/or short driver cycles.
PIP5569A2019-06-03. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE. This Preliminary information communicates to the dealer an issue where the vehicle's engine may crank over unprompted and not start afterward. This is the result of hooking up the Active Fuel Injector Tool incorrectly on vehicles equipped with a direct fuel injection system. This Preliminary information instructs the dealer of a repair kit they received that will prevent this issue when installed correctly.
PIE0499B2019-04-22. Service bulletin. FUEL SYSTEM, OTHER:STORAGE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:WIRING. This engineering informational bulletin is requesting information and document the exact location of the wire chafing by taking a photo of the flex fuel pigtail as it appears BEFORE repairs are made.
050604022P2019-04-22. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; FUEL SYSTEM, GASOLINE; 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.
18NA3342019-04-22. Service bulletin. FUEL SYSTEM, GASOLINE. This informational bulletin provides information on Perceived Longer Crank, Misfire, Hesitation Feel and/or Surge conditions of the new L5P 6.6L Diesel Engine.
18NA3342019-04-15. Service bulletin. FUEL SYSTEM, DIESEL. This informational bulletin provides information on Perceived Longer Crank, Misfire, Hesitation Feel and/or Surge conditions of the new L5P 6.6L Diesel Engine.
PIE04992019-03-25. Service bulletin. ELECTRICAL SYSTEM:WIRING; FUEL SYSTEM, GASOLINE. This engineering informational bulletin is requesting information and document the exact location of the wire chafing by taking a photo of the flex fuel pigtail as it appears BEFORE repairs are made.
17NA3022019-03-25. Service bulletin. FUEL SYSTEM, GASOLINE. This informational bulletin provides information on availability for a locking gas cap for trucks are operated in high amount of dirt or dust which can migrate to the filler cap area.
19NA0052019-03-25. Service bulletin. FUEL SYSTEM, DIESEL. This technical bulletin provides a procedure to replace the fill pipe if found the cause of the noises at highway speeds.
18NA3612019-03-25. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; FUEL SYSTEM, GASOLINE; EQUIPMENT. 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.