Service bulletins for the 2011 Buick LaCrosse
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.
1641 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Fuel system are shown. Show all
| PIP5028C | 2017-08-15. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. This Preliminary Information communication provides information to the technician about vehicles that may have a Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Code P01285 and or P0171. Technician will need to use published Service Information diagnostics first. Technician will update the Engine Control Module with the latest calibration in Tis-2-Web if published Service Information diagnostics do not resolve the concern. If the calibration did not repair the concern inspect the engine for oil leaks and insure the oil fill cap is properly closed. Technician will also use the CH-44175-1 handheld tester to test the ethanol content of the fuel. Technician should also inspect for unmetered air/vacuum leaks by using the Evaporative Emissions System smoke machine to induce smoke into the engine, exhaust, and air intake system as outlined in the latest version of PIP4925. Technician should inspect the air filter condition to ensure that it is a factory filter and that none of the pleats are damaged and the inside of the air cleaner opening before the Mass Air Flow sensor for any sign of casting flash. If the concern is currently happening while at a hot idle, plug all vacuum lines. |
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| PIT4943C | 2017-08-15. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; FUEL SYSTEM, GASOLINE; SERVICE BRAKES, HYDRAULIC. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp. Technician may find Diagnostic Trouble Code P0442. Technician will need to review Techlink article from May 2013 titled "Using the Evaporative Emissions System Tester" Technician will need to follow these steps to help diagnose the issue. First after the P0442 has been verified do not disturb any of the fuel system components. The technician now can use the scan tool to close the Evaporative Emissions System. If possible change the tank pressure sensor units from inch_H2O to milimeter_Hg for better resolution. Now the vehicle can be stared to monitor the tank pressure sensor output value for approximately two minutes. If the tank pressure sensor value does change, pressurize the fuel tank side of the purge solenoid with the GE 41413-A / J 41413-A and the necessary adaptors. Now add smoke and allow pressure to stabilize for 2 minutes. If smoke is allowed to pass through the purge solenoid, replace the purge solenoid. If the tank pressure sensor value does not change, then install CH-48096 adaptor between the purge line from the canister and the purge solenoid. With the Evaporative Emissions System closed, pressurize the system through the CH-48096 adaptor and allow the system to completely stabilize, by observing the Press / Vac Gauge for a minimum of 5 minutes. Now add smoke to the system with GE 41413-A / J 41413-A after system stabilization. Now inspect the purge solenoid, engine side, fuel cap, canister vent solenoid filter and any line quick connects. When the leak is unable to be located, test under a vacuum condition. his type of leak may be detected by using the scan tool Purge/Seal function to create a vacuum in the Evaporative Emissions System and then observe the FTP sensor parameter for vacuum decay. |
| 12313B | 2016-06-09. Service bulletin. ENGINE; FUEL/PROPULSION SYSTEM. SUMMARY TO BE PROVIDED ON A FUTURE DATE. |
| 12313A | 2016-06-09. Service bulletin. FUEL/PROPULSION SYSTEM; ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE. |
| SB-12313B-A | 2016-03-16. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP; FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP. SUMMARY TO BE PROVIDED ON A FUTURE DATE. |
| SB-12313-A | 2016-03-16. Service bulletin. FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP; ENGINE; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. SUMMARY TO BE PROVIDED ON A FUTURE DATE. |
| SB-12313 | 2016-03-16. Service bulletin. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP; FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP; ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE. |
| SB-12313 | 2013-10-17. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. GMC/BUICK/CHEVROLET SPECIAL COVERAGE: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SOME MODEL VEHICLES, THE CHAIN IS ALLOW TO STRETCH DUE TO BALANCE CHAIN PINS WEARING AND THIS CAUSE ENGINE NOISES AND CHAIN COULD BREAK, DAMAGING ENGINE. MODELS 2010-11 LACROSSE, 2011 REGAL, 2010-11 EQUINOX, TERRAIN. *PE UPDATED 12/6/13. *PE |
| PIP-4924 | 2011-11-17. Service bulletin. ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD; ELECTRICAL SYSTEM:WIRING; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS. BUICK/CADILLAC/CHEVROLET/SATURN/GMC: THERE ARE INJECTOR CODES ON VEHICLE IF EXHIBITING MISFIRE AND SES LIGHT IS ON. *PE UPDATED 6/18/12. *PE |
| PI-0526A | 2011-10-03. Service bulletin. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP. BUICK/CHEVROLET/GMC: INDICATOR LAMP IS MALFUNCTIONING INTERMITTENTLY. *PE |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.