Buick Lucerne 2007 — technical service bulletin
Bulletin PIP4173A · NHTSA communication 10161015 · issued May 15, 2019
Technical service bulletin
communication type
Engine and Engine Cooling
component
2007
model years
1
vehicle entries
Official summary
This Preliminary information is to inform the dealer of a possible coolant leak from an engine expansion plug. The dealer is advised to seal and replace the core plug to correct the leak.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.