WenmarOpen by Wenmar Pro

Service bulletins for the 2025 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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
PIT5074S2025-07-23. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
PIP5601B2025-07-23. Service bulletin. UNKNOWN OR OTHER. This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
PIP5774B2025-07-23. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates A vehicle may have a concern of any of the following DTC's set P3189 P318A P318B P318C P318D P318E P318F P3190. Informs dealer to perform a crankshaft variation relearn, Also notes that SI may not isolate.
N2525122602025-07-17. Service campaign. STEERING. Certain vehicles listed above may have a condition in which the fastener for the intermediate steering shaft to steering gear assembly may have suspect torque results. Dealers will replace and torque fastener.
N2525028912025-07-16. Service campaign. ENGINE. Customer Satisfaction Program. Certain vehicles listed above may have a condition in which the internal differential nut was cross threaded or missing during assembly. Dealers will review the vehicles service history in IVH, and if necessary, replace the rear electric drive transmission module.
PIT6406A2025-07-14. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information communicates direction for different audio issues with RPO UQA, UQF, UQS, or NKD
PIT6393A2025-07-14. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it. It also informs them to follow the bulletins as necessary to USB update the modules.
25-NA-0142025-07-08. Service bulletin. POWER TRAIN. This bulletin provides a procedure to overhaul the control valve to replace a plate and worn down check ball to correct the customers concern of No Reverse, No Shift Past Third Gear - DTC P2732 Set.
24-NA-0752025-07-07. Service bulletin. POWER TRAIN. This bulletin provides a procedure to add a shim to the rear axle to change the pitch of said axle to correct the angle of the axle to pinion variance.
21-NA-2382025-07-07. Service bulletin. POWER TRAIN. This technical bulletin provides a procedure to inspect the front pump of the transmission for a possible leak.
15-NA-0102025-07-07. Service bulletin. ENGINE. This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in other states.
PIT64062025-07-01. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information communicates direction for different audio issues with RPO UQA, UQF, UQS, or NKD
PIC6602E2025-07-01. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
PIT64042025-07-01. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information communicates the DTC's setting in the SDGM are false, steps to resolve and not to replace the module.
N25-2500202025-07-01. Over-the-air update. UNKNOWN OR OTHER. • Improves how center display adjusts to lighting changes. • Improved warnings when a key is missing. • Better tuning for interior lighting in Stealth mode. • Improvements to automatic low beam headlamp logic. • Smoother dimming and transitions from day to night. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
PIT64082025-07-01. Service bulletin. UNKNOWN OR OTHER. Pi was created to advise dealers of an issue GM Engineering is investigating where the mute and home buttons are inop on radio display
PIT5832V2025-06-30. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
PIT64022025-06-30. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates a software concern where the technician may not be able to update the software in the Automatic Level Control Module and a work around to resolve that concern.
PIT64012025-06-30. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates a diagnostic tip on how to resolve a issue of the horn sounding when vehicle doors are being closed and the key in vehicle reminder set to off.
PIT64002025-06-30. Service bulletin. UNKNOWN OR OTHER. This PI Communications information on an alternative product dealers can use to perform 19-NA-255: Wax Coating on Frame Peeling, Metal Shows Corrosion/Rusting due to issue with getting product from current supplier listed in the bulletin.
PIT63932025-06-30. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it. It also informs them to follow the bulletins as necessary to USB update the modules.
PIT6362D2025-06-30. Service bulletin. UNKNOWN OR OTHER. This preliminary information communicates to dealership technicians various radio concerns are all related to software and Engineering is currently working on a design improvement.
PIT6336B2025-06-30. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with unwanted opening of the sunroof and dealership are to replace the overhead console.
PIT6302B2025-06-30. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue for a rub or scarp noise from the steering and dealership are to fully seat the turn signal switch bracket to correct the noise.
PIP60732025-06-30. Service bulletin. UNKNOWN OR OTHER. This preliminary information advises dealers of a potential ignition coil failure that could cause an engine misfire that could be misdiagnosed as a fuel injector.

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