New Product Information. Buick Lucerne 2006

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2006 🢒 Lucerne 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 New Product Information

The purpose of New Product Information is to highlight or indicate important changes from the previous model year.

Changes may include one or more of the following items:

•	Torque values and/or fastener tightening strategies

•	Changed engine specifications

•	New sealants and/or adhesives

•	Disassembly and assembly procedure revisions

•	Engine mechanical diagnostic procedure revisions

•	New special tools required

•	A component comparison from the previous year

The engine mechanical fastener tightening specifications have changed for 2006.

•	The engine flywheel bolts diameter and torque have increased.

•	The oil pan bolt tightening procedure has been revised to a two pass sequence.

•	The crankshaft balancer bolt tightening procedure has had the torque angle increased.

•	Refer to Fastener Tightening Specifications .

There are no changes to the engine specifications for 2006.

There are sealant changes for 2006.

•	RTV GM P/N 12378521 (Canadian P/N 88901148) is used in the sealing groove of the block in place of the right and left seals between the block and the lower crankcase.

•	Sealant GM P/N 1052942 (Canadian P/N 10953466) or GM P/N 1052943 (Canadian P/N 10953491) is no longer required along side of the seals between the block and the lower crankcase.

•	On oil distribution plates with a molded-in outer seal RTV GM P/N 12378521 (Canadian P/N 88901148) is used on top of the outer seal between the oil distribution plate and the lower crankcase.

•	On oil distribution plates without a molded-in outer seal RTV GM P/N 12378521 (Canadian P/N 88901148) is used in the outer sealing groove between the oil distribution plate and the lower crankcase.

•	RTV GM P/N 12378521 (Canadian P/N 88901148) is used in the sealing groove of the oil pan in place of the seal.

•	There are no disassembly procedure changes for 2006.

•	The tightening of the oil pan bolts has been revised to a two pass sequence.

There are no revisions to the engine mechanical diagnostic procedures for 2006.

There are new special tools required for 2006.

•	The crankshaft rear seal removal tool J 42841-A has been revised to fit both small or large engine flywheel bolt holes in the crankshaft.

•	The crankshaft rear seal installation tool J 45930-A has been revised to fit both small or large engine flywheel bolt holes in the crankshaft.

•	The valve retainer removing and installation tool J 43059 has been replaced by J-43059-A .

•	The piston pin clip remover and installation tool J 43654 has been replaced by EN-46745 .

•	The piston ring compressor J 8037 has been replaced by EN-47701

There are component changes for 2006.

•	J 38816-A is no longer needed to remove and install the water pump. The water pump now bolts onto the water crossover.

•	The throttle body is now Electronic Throttle Control (ETC).

•	The exhaust intermediate pipe support bracket now bolts to the bottom of the oil pan.