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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.

By type

By component

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Only bulletins with component: Automatic transmission are shown. Show all

Bulletins, newest first
19NA1212020-04-27. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; EQUIPMENT ADAPTIVE/MOBILITY. This technical bulletin provides a procedure to perform a trans fluid flush to correct the customers concern.
N1922804502020-03-23. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. Customer Satisfaction Program - Certain vehicles, equipped with the 6-speed automatic transmission, may have a condition in which there is a slight deformation in the stator shaft. Drivers may experience vibration and a decrease in shift performance. Dealers are to replace the transmission.
PIP57002020-02-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This Preliminary information communicates to the dealer technician that the part numbers for the internal wiring harnesses for the 8 speed RWD transmissions are not listed in the Electronic Parts Catalog. Technicians are to refer to the information provided in this document to obtain the internal wiring harness part numbers by application.
PIP5531A2020-02-10. Service bulletin. ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION. This Preliminary Information communication provides information to the technician on the steps need to diagnose and repair vehicles that may have stalling shudder and/or hard shifting into 1st gear or reverse vibration on launch (with excessive crankshaft end play). Technician will test to determine if the crank shaft end play is within specification 0.0015?0.0086 inch. If end play is found to be out of specification, remove engine and inspect for possible crankshaft thrust bearing and/or crankshaft for wear. Inspect thrust bearing for wear on one side and crankshaft on that "mating" surface. If the thrust bearing has three vertical channels worn off replace connecting rod bearings, main bearings, thrust bearing and crankshaft. If working on a Corvette the oil tank with lines and oil cooler are both required to be replaced if equipped
19NA2442019-12-16. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This informational bulletin provides information on a harsh 3-2 downshift during closed throttle coast when coming to a stop.
080730026F2019-09-23. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This informational bulletin provides information on Some vehicles may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.
PIP5653A2019-09-16. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This Preliminary information communicates that engineering has developed a repair for a chirp noise associated with the front axle assembly.
19NA1532019-08-26. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This technical bulletin provides a procedure to replace the torque converter and inspect the front pump and the TEHCM for metal.
19NA1212019-08-26. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This technical bulletin provides a procedure to perform a trans fluid flush to correct the customers concern.
PIP5369C2019-06-03. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:SOFTWARE. This Preliminary Information communication provides information to the technician about vehicles that have "Service 4 Wheel Drive" message on the Driver Information Center. Provides the technician with additional information to ensure that the TCCM contains the latest software released to address previous issues, also advises of default action changes. Calls out specific circuits to be inspected to help isolate intermittent codes.
PIP56312019-04-08. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This Preliminary information communicates to the dealer technician additional Instructions For Control Valve Body Bolt Kit Part Number 24294356. The technician is instructed on which bolts need to be replaced and which bolts need sealant applied during valve body replacement.
183092018-12-10. Service bulletin. WHEELS; ENGINE; SUSPENSION; POWER TRAIN:AUTOMATIC TRANSMISSION. 18309 - Customer Satisfaction Program. Certain 2019 model year Chevrolet Silverado and GMC Sierra vehicles may have a condition where the prop shaft bolts may not have been properly torqued to the front differential. Drivers will likely experience a vibration or clunking noise as the bolt(s) loosen when the vehicle is used in 4WD mode. If the vehicle continues to be driven after the vibration or clunking noise occurs, all bolts may eventually fracture. Remove front prop shaft bolts, add Loctite, and reinstall.

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