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Service bulletins for the 2015 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.

3109 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
PIT5434A2017-08-15. Service bulletin. ELECTRICAL SYSTEM; SEATS. This Preliminary Information communication provides information to the technician only to provide additional tips when diagnosing a front heated seat concern and is not meant to be a diagnostic flow chart or replace Service Information. Always, perform and refer to Service Information for the latest diagnostic information and procedures. Trucks equipped with heated and cooled seats Regular Production Option Code (KB6), may comment on any of the following front heated seat concerns. Condition 1, a front heated seat (back and/or cushion) is inoperative. Technician should diagnosis each affected seat heater individually. Technician should test all four circuits Power, Ground, Control (from Body Control Module) and Heating Element Supply Power. The Power, Ground, Control (from Body Control Module) can easily be checked by starting the engine and turn on the cooled seat. When the cooled seats are turned on the blower in each seat back and cushion will turn on at that point technician will be able to hear the blower moving. The heating element supply power circuit can be test by disconnecting the affected heating element and connect a voltmeter across the heating element supply power and ground circuit. Then start the engine and turn on the heated seat, the blower will supply system voltage on the element supply power circuit for 1 to 2 seconds. With the heated seat element disconnected, use an ohmmeter to measure the resistance of the heating element. If all of the above steps check ok or the heating element resistance is close to the approximate spec, reconnect all disconnected connectors. Connect a voltmeter across the affected heated seat element connectors supply power and ground circuits back probing the connector. Then check the resistance of the heating element. The resistance should be close to the same resistance as when testing with the connector unplugged. Now check the voltage with the engine running and the heated sets on high. Condition 2, the front heate
PIT55292017-08-15. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL. This Preliminary Information communication provides information to the technician about vehicles that have Trailer connection not recognized or ?Check Trailer wiring? or ?Service Trailer Brake? message. Technician may find Diagnostic Trouble Codes C1112, C1113, C1114, C111B, U1556, and/or U1505. Technician will need to inspect the Trailer Brake Power Module connector for corroded terminals and replace as necessary.
PIP5337G2017-08-15. Service bulletin. POWER TRAIN; VEHICLE SPEED CONTROL:LINKAGES; SERVICE BRAKES. This Preliminary Information communication provides information to the technician on the step to diagnose and repair the vehicles that may have a shake or shudder during light throttle acceleration, between 30 and 65 miles per hour steady state driving. Also shudder feeling that may be described as driving over rumble strips or rough pavement. Technician will need to run the vehicle in three different operational modes. The three modes are Normal, torque converter clutch open, and torque converter clutch closed. Technician will need to press and hold the tow-haul mode button for five seconds to disable grade braking to prevent downshifts during test. Technician will need to duplicate the concern in Normal mode. If the concern is gone in torque converter clutch open and closed then the torque converter should be replaced. If the concern is not present in normal mode, torque converter clutch open, and torque converter clutch closed the concern is not with the shudder. Technician should use of the PICO scope and Noise, Vibration and Harshness software can be used to confirm torque converter clutch shudder, Engine, Tire or Driveline component related conditions. Flush the cooler lines and cooler using DT-45096 transmission oil cooling system flush and flow test tool when the torque converter is replace.
PIP5163B2017-08-15. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; FUEL SYSTEM, GASOLINE; ENGINE. This Preliminary Information communication provides information to the technician about engine block that have a 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.
PIP5437A2017-08-15. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. This Preliminary Information communication provides information to the technician about vehicles that have harsh concerns. Technician are advised to use GDS2 software to confirm which shift is causing the concern. On low mileage vehicles technician are instructed to perform a drive learn procedure. On higher mileage vehicles technicians are instructed to remove the transmission fluid pan and inspect for debris. If debris is found technicians should disassemble and inspect for root cause of the concern and repair the transmission as needed. If no debris is found technicians are advised to replace the valve body.
PIP54422017-08-15. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that have an exhaust leak, noisy exhaust, or noise mid-vehicle. Technician will need to check for an unseated pipe to pipe mid-joint connection. Technician will need to install new exhaust band.
PIP54372017-08-15. Service bulletin. POWER TRAIN. This Preliminary Information communication provides information to the technician about vehicles that have harsh shifts concerns. Technicians will use Global Diagnostic System 2 software to confirm which shift is causing the concern. On low mileage vehicles technician are instructed to perform a drive learn procedure. On higher mileage vehicles technicians are instructed to remove the transmission fluid pan and inspect for debris. If debris is found in the pan, technicians should disassemble and inspect for root cause of the concern and repair the transmission as needed. If no debris is found technicians are advised to replace the valve body.
PIT5389B2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicle that may have an OnStar system that has progression tones when pressing the blue or red button. Technician will need to contact General Motors Technical Assistance Center with the scan tool data from the OnStar system.
PIP5382F2017-08-15. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE. This Preliminary Information communication advises the technician that generation 5 engines with Regular Production Option Code L83, L86, or LV3 may have an oil consumption concern were one quart in 2000 miles is being used. Dealer will confirm oil level was properly checked per Owner?s Manual, and check the bolt torque on the Valve Lifter Oil Manifold Assembly, before you contacting General Motors Product Quality Center.
PIP52522017-08-15. Service bulletin. ENGINE. This Preliminary Information communication provides information to the technician about vehicles that the engine may run hot with the snow plow installed. Do not exceed 64?kilometers per hour / 40?miles per hour with a snow plow mounted to the vehicle even if equipped with VYU. The vehicle could overheat and be damaged.
PIP5204D2017-08-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; FUEL SYSTEM, DIESEL. This Preliminary Information communication advises the technician that the Diesel Oxidation Converter part numbers 15231895, 22768282, 22770967, 22887212, 22893734 and 22977171 will be placed on a parts restriction through the General Motors Product Quality Center. Dealer will need to contact the General Motors Product Quality Center for further assistance.
PIT5311A2017-08-15. Service bulletin. ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have an intermittent "Check Trailer Wiring" or "Service Trailer Brake" message on the Driver Information Center. Technician will inspect and clean the ground wire (normally white wire) connection on the trailer side of the 7-pin connector. Inspect that the wires inside the trailer side connector are clean and securely fastened. If the vehicle?s 7-way connector socket terminals are deformed or have excessive wear, it will be necessary to replace the truck side connector from General Motors Customer Care and Aftersales along with the trailer's 7-way connector plug.
PIT4745B2017-08-15. Service bulletin. STRUCTURE:FRAME AND MEMBERS; WHEELS. This Preliminary Information communication provides information to the technician about vehicles that have raised dents or ripple appearance in the side outer panel of the cargo box around the perimeter of the wheel house opening. Technician should first access the rear of the inner wheelhouse area through the tail lamp cavity and the front of the wheelhouse from under the vehicle, and coat the inner hem of the wheel house to side outer panel with 3M Rust Fighter I. After allowing the 3M Rust Fighter I to dry then apply several coats of Nox Rust X-121B undercoating Part number 12346501.
PIT5282A2017-08-15. Service bulletin. ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL. This Preliminary Information communication provides information to the technician that a customer may request the factory Integrated Trailer Brake Control be bypassed and their aftermarket trailer brake controller be installed instead. Technician will need to gain access to the X185 or the X138 connector (varies with vehicle build; refer to Service Information) near the underhood fuse block, terminal 32. Circuit 47 ends at the body harness side of X185 or X138 terminal 32, which comes from the X61A junction block. Obtain enough Dark Blue 12 gauge wire to run from X185 or X138 to the 7-way trailer connector at the bumper. Attach terminated lead part number 13327155 to one end of the Dark Blue and insert into the chassis harness side of the X185 or X138 connector terminal 32. Run the Dark Blue wire in its own conduit along the frame to the 7-way trailer connector at the bumper. Remove circuit 47 from the 7-way trailer connector terminal ?C? and tape the bare terminal and attach to the harness. Attach terminal part number 12110853, located in Delphi Tray 4, to the other end of the Dark Blue wire, with the correct weather pack seal, and insert it into the 7-way trailer connector terminal ?C.? Install trailer brake controller harness General Motors part number 23184088 into Middle Bus Electrical Center (X61A).
PIP52502017-08-15. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE); ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that may have a Service 4WD message on the Driver Information Center. Technician may find C0398 or C0326 stored in the Transfer Case Control Module. Technician should reprogram the Transfer Case Control Module using Service Programming System for the updated calibrations to resolve this concern.
PIP5211B2017-08-15. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY; ENGINE. This Preliminary Information communication provides information to the technician the steps needed to diagnose and repair vehicles with a rough idle and/or vibration at idle in Drive. This condition will not be present in Park, or Neutral. This concern may be caused by ground out within the one or both engine mounts. Technician will use CH-51450-A (Pico Oscilloscope) to measure the vibration disturbance. If the vibration concern is E1.5 in the horizontal / lateral direction with Pico sensor mounted in seat track as indicated ? continue with steps to reduce the amplitude of the vibration by adding spacers in key locations to reduce ground out within the engine mounts. The 6.2L engine has a characteristic E1 which can be felt, and may be described as a lopey idle. Do not confuse 6.2L E1 characteristic (not caused by mount ground-out), with E1.5 normal idle characteristics being transmitted into the truck via ground-out thru the engine mounts. If measuring high at the seat track 12 mg or greater; replacement of the engine mounts should help reduce the amplitude of the vibration. If the disturbance measures at the seat track as E 1.5 lateral in the range of approximately 2.5 - 8 mg using a tri-axis sensor. Then place tri-axis Pico sensor on the inboard seat track forward-most location to record measurement of the rough idle vibration concern. With the Heater-Vent-Air Conditioning on perform several short heavy launch events from stop to stop to bring the temperatures back up while attempting to re-create the rough idle vibration in Drive with Pico sensor placed on inboard seat track; while the vibration is active ? Record Pico reading. This method seems to provide better results than extended test drives. If the Pico reading for E1.5, with vibration active, at specified seat track location measures close to 2mg or less use Service Information to diagnose rough idle / vibration. If the Pico reading for E1.5, with vibration active, at the inboard forward seat track
PIT53622017-08-15. Service bulletin. STRUCTURE:BODY; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). This Preliminary Information communication provides information to the technician the steps to diagnose and repair vehicles with visible water leak or signs of water intrusion from the antenna base, red OnStar LED, unable to connect to OnStar, OnStar unable to locate the vehicle, OnStar has inaccurate global positioning system location, no global positioning system on the navigation radio display, and inaccurate global positioning system location on the navigation radio display. Technician may find Diagnostic Trouble Codes B2462-02, B2462-04, B2470-02, B2470-04, B125C-01, B125C-02, or B125C-04. Technician should replace the high efficiency antenna with the latest part number in the catalog.
PIT5236B2017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). This Preliminary Information communication provides information to the technician about vehicle that may OnStar inoperative and Navigation/GPS/Compass issues. Technician may find Diagnostic Trouble Codes B101D sym 3C and or F0. Technician will gather data using a scan tool and contact General Motors Technical Assistance Center for further assistance. After approval technician will replace the OnStar module.
PIP5200C2017-08-15. Service bulletin. POWER TRAIN. This Preliminary Information communication advises the technician that the 8L90 8 Speed Automatic Transmission is on exchange through General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.
PIT53592017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that may have a radio backlighting will stay on even after the ignition has been turned off and the key has been removed for several minutes, eventually the battery will drain. Technician may find following fuses F23DL F22DL F30DL F31DL F32DL with the ignition key in the off position to have voltage. Technician should not replace the Transfer Case Control Module. Technician will need to install a diode, part number 12112422, across the coil of the solenoid. It is important that the striped end of the diode be connected to the positive terminal of the coil and the other end of the diode be connected to ground.
PIT53582017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician about vehicles with a low-volume, repetitive ticking noise coming from all speakers that may be more noticeable when listening to talk radio where there are breaks in the dialogue, allowing the noise to be more easily heard. Technician should not replace any parts for this concern. Engineering is currently evaluating this concern.
PIT53562017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician about when listening to an iPod that the first song will still be displayed when the next song in the list is playing. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle and that the current song can be displayed by pressing the ?next? button while the device is playing.
PIC60562017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician about when listening to an iPod that the first song will still be displayed when the next song in the list is playing. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is currently evaluating this concern.
PIT5288B2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that may have any of these concerns remote keyless entry, passive Entry and Start Inoperative, No Fob detect message on driver information center, service tire pressure system, no audio, touch screen Inoperative, Steering Wheel Controls Inoperative, Service Stabilitrak, rear power windows inoperative, rear wiper inoperative, and or a dead battery. Technician may find Diagnostic Trouble Codes B3101, B144C, C0710, C0544, U1548, U1549, U154A, U0151, U0126, U0415, U0077, U0028 and/or U0029. Technician should inspect the left instrument panel for the wire harness being pinched. Technician will need to repair the wire harness and reroute the wire harness.
PIC5851B2017-08-15. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This Preliminary Information communication provides information to the technician about the USB port going inoperative when using Multi-Media Interface Tester. Currently the Multi-Media Interface Tester and should not be used on vehicles with a base radio for testing USB function.

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