Technical Service Bulletin PIP4919B — 2009 BUICK LACROSSE
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR
Bulletin Details
| TSB ID | PIP4919B |
| Manufacturer | |
| Vehicle | 2009 BUICK LACROSSE |
| Component | ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR |
| Communication Date |
Bulletin Summary
This Preliminary Information communication provides information to the technician about vehicles that may have black smoke on a cold start. A dual-pulse injection strategy is utilized during engine cold start to reduce the time required to bring the catalytic converter up to operating temperature. This split injection strategy lasts for about 60 seconds on cold start. This process may cause the customer to see increased black smoke during cold start and should be considered normal.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2009 BUICK LACROSSE
DOR-S5V8F-03
ELECTRICAL SYSTEM
060605001H
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
000310003X
TIRES
PIP3423N
ENGINE
14636
VEHICLE SPEED CONTROL:ACCELERATOR PEDAL
PIC-5992
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:ABS WARNING LIGHT
SB-09-06-04-027
ELECTRICAL SYSTEM:IGNITION:SWITCH
TB-09-08-49-005
FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM