Heater Core Torque Specifications

2006-2011 Buick Lucerne 3.8L V6

Labor Time:6 hours

🔧 Torque Values8 specifications

Component	lb-ft	Nm	Notes
Cover Screws	9	12	—
Drain Petcock	6	8	Hand tight
Fan Bolts	9	12	—
Hose Clamps	3	4	Do not overtighten
⚠️ Housing Bolts	12	16	—
Mounting Bolts	23	31	—
⚠️ Pump Bolts	21	28	Torque in sequence
⚠️ Thermostat Housing Bolts	12	16	—

⚠️ = Critical torque value | Always verify with vehicle-specific service manual

⚠️ Some critical specs are estimated. Please verify sequence.

1990-1997 4.6L V8 Modular

2007-2012 3.7L I5

2011-2016 6.7L V8 Power Stroke Diesel

2022-2024 GT-Line Dual Motor AWD

1992-1995 1.5L I4 D15

2016-2023 2.0L Turbo I4

The primary torque specification for heater core on a 2006-2011 Buick Lucerne is 12 Nm (9 lb-ft).

There are 8 torque specifications for heater core on the 2006-2011 Buick Lucerne 3.8L V6, covering all related fasteners and components.