WenmarOpen by Wenmar Pro

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

Only bulletins with component: Brakes are shown. Show all

Bulletins, newest first
PIT5206E2017-05-22. Service bulletin. SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES; PARKING BRAKE; ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL; POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN WITH THE STEPS ON DIAGNOSING AND REPAIRING VEHICLES THAT MAY HAVE UNWANTED GRADE BRAKING, REDUCED ENGINE POWER WITH NO DRIVER INFORMATION CENTER MESSAGES “ BRAKE PEDAL OVERRIDE FEATURE “, TRANSMISSION BUSY OR FREQUENT SHIFTING UP OR DOWN, AND DIAGNOSTIC TROUBLE CODES P057B, P057C, AND/OR P057D MAY OR MAY NOT BE SET. TECHNICIAN WILL USE THIS PRELIMINARY INFORMATION TO FIND THE BRAKE PEDAL POSITION DATA PARAMETERS IN THE SCAN TOOL, AND ALSO TO PROVIDE SOME ADDITIONAL DIAGNOSTIC HELP. THESE ISSUES MAY BE CAUSED BY AN INCORRECT BRAKE PEDAL POSITION SENSOR INPUT TO THE ENGINE CONTROL MODULE. TECHNICIAN WILL VERIFY WITH THE SCAN TOOL IF THE ENGINE CONTROL MODULE HAS THE CORRECT PARAMETERS FOR THE BRAKE PEDAL POSITION SENSOR. IF AN ENGINE CONTROL MODULE BRAKE PEDAL POSITION SENSOR RELEARN IS PERFORMED, THE TRUCK MAY BE TEMPORARILY REPAIRED UNTIL THE INTERMITTENT WIRING ISSUE BETWEEN THE ENGINE CONTROL MODULE AND BRAKE PEDAL POSITION SENSOR OCCURS AGAIN. ON 2014 AND NEWER TRUCKS INSPECT AND REPAIR ANY DAMAGE TO X115 AND X119. ON THE 2014 AND PREVIOUS TRUCKS INSPECT AND REPAIR ANY DAMAGE TO X205.
PIT5377D2017-03-23. Service bulletin. SERVICE BRAKES. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ON THE STEP NEEDED TO DIAGNOSE AND REPAIR VEHICLES THAT MAY HAVE UNEVEN BRAKE PAD WEAR. TECHNICIAN WILL NEED TO INSPECT AND MEASURE THE BRAKE PADS THICKNESS. ALSO DETERMINE THE CUSTOMER’S DRIVING STYLE. THE DISC BRAKE PADS SHOULD ONLY BE REPLACED IF THE FRICTION SURFACE IS WORN TO WITHIN 2.0 MM (0.079 IN) OF THE MOUNTING PLATES. THE ROTORS AND PADS SHOULD BE REPLACED WITH THE UPDATED PART NUMBER IF THE PADS ARE OUT OF SPECIFICATION, PERFORM NORMAL SERVICE INFORMATION DIAGNOSTICS TO DETERMINE THE CAUSE OF THE CONCERN.
PIT5361A2017-03-23. Service bulletin. SERVICE BRAKES. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ON THE STEPS TO DIAGNOSE AND REPAIR VEHICLES THAT MAY HAVE ISSUES WERE THE CUSTOMER WILL NEED INCREASED EFFORT TO DEPRESS THE BRAKE PEDAL. TECHNICIAN MAY FIND FLUID IN THE BRAKE BOOSTER AND/OR THE BOOSTER VACUUM LINE. TECHNICIAN WILL NEED TO REPLACE VACUUM PUMP, BRAKE BOOSTER, MASTER CYLINDER, VACUUM PUMP BELT AND THE VACUUM LINE BETWEEN THE BOOSTER AND THE PUMP.
15203A2017-01-31. Service bulletin. SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS. 15203A - SERVICE UPDATE (REVISED SERVICE PROCEDURE). THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO INSPECT AND, IF REQUIRED, RETIGHTEN THE TORQUE ON THE RIGHT-REAR-BRAKE-LINE-BRACKET BOLT TO THE REAR-AXLE ON CERTAIN FORT WAYNE ASSEMBLY PLANT BUILT 2014-2015 CHEVROLET SILVERADO LD, 2015 CHEVROLET SILVERADO HD, 2014-2015 GMC SIERRA LD, 2015 GMC SIERRA HD AND 2015 GMC SIERRA DENALI LD VEHICLES. THESE VEHICLES MAY HAVE BEEN ASSEMBLED WITH AN INCORRECTLY TORQUED RIGHT-REAR-BRAKE-LINE-BRACKET BOLT TO THE REAR AXLE. THIS CONDITION COULD ALLOW THE BRAKE LINE TO WEAR AGAINST THE REAR-AXLE HOUSING AND CAUSE A BRAKE-FLUID LEAK.
152062017-01-31. Service bulletin. SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS. 15203 - SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO INSPECT AND, IF REQUIRED, RETIGHTEN THE TORQUE ON THE RIGHT-REAR-BRAKE-LINE-BRACKET BOLT TO THE REAR-AXLE ON CERTAIN FORT WAYNE ASSEMBLY PLANT BUILT 2014-2015 CHEVROLET SILVERADO LD, 2015 CHEVROLET SILVERADO HD, 2014-2015 GMC SIERRA LD, 2015 GMC SIERRA HD AND 2015 GMC SIERRA DENALI LD VEHICLES. THESE VEHICLES MAY HAVE BEEN ASSEMBLED WITH AN INCORRECTLY TORQUED RIGHT-REAR-BRAKE-LINE-BRACKET BOLT TO THE REAR AXLE. THIS CONDITION COULD ALLOW THE BRAKE LINE TO WEAR AGAINST THE REAR-AXLE HOUSING AND CAUSE A BRAKE-FLUID LEAK.
20760D2016-11-04. Service bulletin. SERVICE BRAKES. THE BRAKE PEDAL PIVOT NUT ON THESE VEHICLES MAY BECOME LOOSE, CAUSING THE BRAKE PEDAL TO BE LOOSE OR INOPERATIVE. IF THE BRAKE PEDAL BECOMES LOOSE OR INOPERATIVE, THE DRIVER MAY BE UNABLE TO SAFELY STOP THE VEHICLE THROUGH APPLICATION OF THE BRAKE PEDAL, INCREASING THE RISK OF A CRASH. A LOOSE PEDAL MAY ALSO INTERFERE WITH THE ACCELERATOR PEDAL, INCREASING THE RISK OF A CRASH
20760D2016-10-17. Service bulletin. SERVICE BRAKES. THE BRAKE PEDAL PIVOT NUT ON THESE VEHICLES MAY BECOME LOOSE, CAUSING THE BRAKE PEDAL TO BE LOOSE OR INOPERATIVE. IF THE BRAKE PEDAL BECOMES LOOSE OR INOPERATIVE, THE DRIVER MAY BE UNABLE TO SAFELY STOP THE VEHICLE THROUGH APPLICATION OF THE BRAKE PEDAL, INCREASING THE RISK OF A CRASH. A LOOSE PEDAL MAY ALSO INTERFERE WITH THE ACCELERATOR PEDAL, INCREASING THE RISK OF A CRASH.
PIT5361B2016-09-27. Service bulletin. SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES; SERVICE BRAKES. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ON THE STEPS TO DIAGNOSE AND REPAIR VEHICLES THAT MAY HAVE ISSUES WERE THE CUSTOMER WILL NEED INCREASED EFFORT TO DEPRESS THE BRAKE PEDAL. TECHNICIAN MAY FIND FLUID IN THE BRAKE BOOSTER AND/OR THE BOOSTER VACUUM LINE. TECHNICIAN WILL NEED TO REPLACE VACUUM PUMP, BRAKE BOOSTER, MASTER CYLINDER, VACUUM PUMP BELT AND THE VACUUM LINE BETWEEN THE BOOSTER AND THE PUMP.
SB-140562016-09-21. Service bulletin. ELECTRICAL SYSTEM:WIRING; SERVICE BRAKES, ELECTRIC. 14056 - MESSAGE NO BULLETIN. CERTAIN VEHICLES, EQUIPPED WITH THE TRAILERING PACKAGE (RPO Z82 WITHOUT RPO JL1), WERE SHIPPED TO DEALERS WITHOUT THE ELECTRIC BRAKE CONTROLLER WIRE HARNESS. THE MISSING HARNESSES ARE BEING SHIPPED TO DEALERS FROM THE WARRANTY PARTS CENTER (WPC) FOR VEHICLES IN DEALER INVENTORY. THIS SHIPMENT WILL BEGIN MARCH 1, 2014, VIA UPS 3-DAY SHIPPING. IF A VEHICLE ASSIGNED TO YOU HAS BEEN SOLD OR DEALER TRADED, PLEASE MAKE ARRANGEMENTS TO PROVIDE THE CUSTOMER OR DEALER WITH THE HARNESS. GM WILL MAIL THE HARNESS TO CUSTOMERS OF RECORD.
PIT-3665-D2016-08-24. Service bulletin. SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT THE HYDRO-BOOST IS NOT SERVICEABLE AND WILL NEED TO BE REPLACED IF THE BRAKE PEDAL MOVES OR APPLIES ON ITS OWN AT A FULL TURN.
PIT-5457-A2016-08-13. Service bulletin. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:ABS WARNING LIGHT; SUSPENSION; STEERING:HYDRAULIC POWER ASSIST SYSTEM; SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS FOR DIAGNOSING THE CONCERN, AND COMPLETING A WIRING REPAIR. THE VEHICLE MAY HAVE A SERVICE ANTILOCK BRAKING SYSTEM, TRACTION CONTROL, POWER STEERING OR SUSPENSION SYSTEM MESSAGE ON THE DRIVERS INFORMATION CENTER.
PIT-5307-C2016-08-11. Service bulletin. ENGINE; SUSPENSION; EQUIPMENT:APPLIANCE:AIR CONDITIONER; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:ABS WARNING LIGHT; SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS TO DIAGNOSE THE CONCERN WHEN THE VEHICLE HA SA SERVICE ENGINE SOON LIGHT, ANTILOCK BRAKING SYSTEM LIGHT OR SERVICE SUSPENSION MESSAGE, MISFIRE, HESITATION, NO CRANK, AIR CONDITIONING INOPERATIVE.
PIT5241C2016-07-07. Service bulletin. ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL; SERVICE BRAKES. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
SBU-152032016-02-04. Service bulletin. SERVICE BRAKES. GMC/CHEVROLET: SERVICE PROCEDURES ON CERTAIN VEHICLES TO INSPECT, RETIGHTEN THE TORQUE FOR RIGHT REAR BRAKE LINE BRACKET BOLT TO REAR AXLE DUE TO INCORRECTLY BEING TORQUED ALLOWING BRAKE LINE TO WEAR AGAINST REAR AXLE HOUSING AND BRAKE FLUID LEAKAGE. MODEL 2014-15 SILVERADO LD, SIERRA LD, 2015 SILVERADO HD, SIERRA HD, SIERRA DENALI HD. *PE
SB-08-24-152016-02-04. Service bulletin. POWER TRAIN:CLUTCH ASSEMBLY; SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER. GENERAL MOTORS: PARTS FOR MOST VEHICLES, CLUTCH, MASTER CYLINDER ASSEMBLY ARE, REQUIRED AND REQUESTED, TO BE RETURNED AND NEED TO REORDER REPLACEMENT PARTS USING SAME PART NUMBERS. *PE
14725A2015-07-20. Service bulletin. PARKING BRAKE. GENERAL MOTORS 2014-2015, CHEVROLET SILVERADO, GMC SIERRA : SERVICE UPDATE FOR INVENTORY AND CUSTOMER PARK BRAKE BRACKET VEHICLES BODY HARNESS CONTACT EXPIRES WITH BASE WARRANTY . *LJ
SU-147252015-06-17. Service bulletin. PARKING BRAKE. GMC/CHEVROLET: PROCEDURE IN TIE STRAP MAIN AND BCM OF BODY HARNESS TO PREVENT THEM COMING IN CONTACT WITH PARK BRAKE BRACKET WHERE EXPOSED BODY HARNESS WIRES IN CLOSE PROXIMITY TO PARKING BRAKE BRACKET CAN RUB OR PINCH BRAKE BRACKET. MODEL 2014-15 SIERRA, SILVERADO. *PE
14725A2015-06-16. Service bulletin. PARKING BRAKE. GENERAL MOTORS 2014-2015 CHEVROLET SILVERADO, GMC SIERRA: SERVICE UPDATE FOR INVENTORY AND CUSTOMER VEHICLES BODY HARNESS CONTACT WITH PARK BRAKE BRACKET WILL EXPIRES WITH BASE WARRANTY. *LJ

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