1990-1999 Buick LeSabre Differential Service Torque Specs

3.8L V6

Applies to 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, and 1999 Buick LeSabre

Labor Time:0.5 hours

🔧 Torque Values5 specifications

Component	lb-ft	Nm	Notes
⚠️ Cover Bolts	29	39	RTV sealant
Cover Screws	9	12	—
⚠️ Drain Plug	35	47	New washer
⚠️ Fill Plug	35	47	—
Mounting Bolts	23	31	—

⚠️ = 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 differential service on a 1990-1999 Buick LeSabre is 39 Nm (29 lb-ft). Note: RTV sealant

There are 5 torque specifications for differential service on the 1990-1999 Buick LeSabre 3.8L V6, covering all related fasteners and components.