WenmarOpen by Wenmar Pro

Service bulletins for the 2011 Buick Regal

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.

1527 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
PIT5076C2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); EQUIPMENT:ELECTRICAL; STEERING:ELECTRIC POWER ASSIST SYSTEM. This Preliminary Information communication advises the technician to insure that global diagnostic service 2 diagnostic packages are up to date prior to learning the steering angle sensor for a diagnostic trouble code C710 symptom code 71 set in the electronic brake control module or the power steering control module. When rechecking for diagnostic trouble codes a U0074 U0077, U0180D, U01293, U0126, U0125, C0186, C0196, or C0287 are set and will not clear diagnose the Chassis bus. If no fault is found in the chassis bus check for an multiple diagnostic interface to data link connector issue. Technician is to try a different multiple diagnostic interface cable and attempt the steering angle sensor learn again following service information instruction then try to clear the codes again.
PIP5203A2017-08-15. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about a service engine soon light on. Technician will find diagnostic trouble codes P0089 and P228D set in the engine control module. This concern could be due to an incorrect intake camshaft or camshaft actuator sprocket. A diagnostic trouble code of P0171 could also set from installing incorrect injectors.
PIP52032017-08-15. Service bulletin. POWER TRAIN; ENGINE. This Preliminary Information communication provides information to the technician about a service engine soon light on. Technician will find diagnostic trouble codes P0089 and P228D set in the engine control module. This concern could be due to an incorrect intake camshaft or camshaft actuator sprocket. A diagnostic trouble code of P0171 could also set from installing incorrect injectors.
PIP4112N2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. This Preliminary Information communication provides information to the technician of a complaint of a sag or hesitation when accelerating. The concern is present when coasting at low speeds of less than 15 miles per hour and then aggressively applying the throttle, or after making a hard stop followed by an aggressive throttle. This is considered normal operation of the vehicle the throttle is delayed and opened slowly up to .7 seconds to help minimize driveline lash and clunking or will have approximately .5 seconds of zero torque to allow the transmission to shift to first gear.
PIP4990A2017-08-15. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. This Preliminary Information communication provides information to the technician about vehicles with the service engine soon lamp that comes on. Technician may find Diagnostic Trouble Code U0101. Technician should review the appropriate Service Information diagnostics for DTC U0101. Also gather all other diagnostic trouble codes in the vehicle and which modules they are set in. The transmission connector pins should be checked for damaged terminals or poor terminal fit. Also inspect the under hood fuse block for damaged terminals or poor terminal fit and mis-positioned fuses in fuse block. Inspect the ground for the Transmission Control Module. Technician should refer to Service Information automatic transmission controls schematics to determine the ground identification.
PIP4990C2017-03-20. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT SOME VEHICLES MAY HAVE A SERVICE ENGINE SOON THAT COMES ON. TECHNICIAN MAY FIND A DIAGNOSTIC TROUBLE CODE U0101 CURRENT OR STORED HISTORY. TECHNICIAN SO CHECK TERMINAL PIN FIT AT TRANSMISSION CONNECTOR, UNDER HOOD FUSE BLOCK. ALSO THE TRANSMISSION CONTROL MODULE GROUND WILL NEED TO BE INSPECTED. TECHNICIAN WILL REVIEW THE APPROPRIATE SERVICE INFORMATION DIAGNOSTICS FOR DTC U0101.
SB-03-07-29-004K2016-08-06. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. THIS INFORMATIONAL BULLETIN PROVIDE INFORMATION ON THE OPERATING CHARACTERISTICS OF A MANUAL TRANSMISSION.
PI13512016-06-22. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PIE02762016-06-22. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PI11312016-06-22. Service bulletin. POWER TRAIN. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PI13512016-06-22. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
SB-PIE-02302016-06-13. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PIE02302016-05-09. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PI-11312014-01-29. Service bulletin. POWER TRAIN. GM: SOME VEHICLES MAY EXPERIENCE VARIOUS MISSING GEARS. VARIOUS DTCS MAY BE SET SUCH AS P0776, P0796, P0878, P0873, P2714 OR P2723. THIS MAY BE CAUSED BY NON-FUNCTIONING PRESSURE CONTROL SOLENOID. *JS
PI-02302013-04-17. Service bulletin. POWER TRAIN:DRIVELINE:DRIVESHAFT. BUICK/CHEVROLET: THERE IS AN OIL/FLUID LEAKAGE UNDER FRONT OF VEHICLE, POSSIBLY FROM WHEEL DRIVE SHAFT SEALS, AND ENGINEERING IS TRYING TO DETERMINE ROOT CAUSE OF LEAKAGE. MODELS 2011-2013 REGAL, CRUZE, 2012-2013 VERANO, SONIC. *PE
PIE-0197B2012-05-02. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. BUICK/CHEVROLET: MANUAL TRANSMISSION SHIFT LEVER CONCERNS - LOOSE, NOISE WHEN SHIFTED, HARD TO SHIFT INTO GEAR OR PROPER GEAR NOT SELECTED WHEN SHIFTED. *KB
PI-0324-C2012-04-17. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE AND ENGINE COOLING. GMC/CHEVROLET/BUICK: TRANSMISSION PUMP NEEDS INSPECTING DUE TO ENGINE CRANKING BUT FAILS TO START, HAS NO FORWARD, NO REVERSE, TRANSMISSION LEAKS, HARD SHIFT AND NO CRANKING. *PE UPDATED 2/25/13. *PE UPDATED 1/29/2014 *JS
PIP-49902012-03-13. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION. BUICK/CHEVROLET/GMC/PONTIAC/SATURN: SOME MODEL YEAR VEHICLES MAY EXPERIENCE SERVICE ENGINE SOON (SES) LAMP ILLUMINATED. ISSUE MAY BE CAUSED BY THE CONTROL SOLENOID/MODULE ASSEMBLY OR MAY HAVE DAMAGED OR POOR TERMINALS FOR UNDER HOOD FUSE BLOCK. *PE
PI-03762011-06-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. GM: THE MALFUNCTION INDICATOR LIGHT IS ON AND THE TRANSMISSION MAY SLIP DUE TO DEBRIS ENTERING THE CHANNEL PLATE. *RM
11-07-30-0012011-06-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. GM: THERE IS A DELAYED TRANSMISSION WHEN SELECTING DRIVE OR REVERSE. 2011 BUICK REGAL. *RM

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