2008-2010 Hummer H3 Alpha Engine R&R Torque Specs

5.3L V8

Applies to 2008, 2009, and 2010 Hummer H3 Alpha

Labor Time:10 hours

Torque Values (20 specifications)

Component	Nm	lb-ft	Notes
⚠️ AC Compressor Bolts	25	18	—
⚠️ Alternator Mounting Bolts	50	37	—
Cover Bolts	20	15	—
Cover Bolts	20	15	—
Electrical Connector Bolts	8	6	—
⚠️ Engine Mount-to-Block Bolts	65	48	—
⚠️ Engine Mount-to-Frame Bolts	75	55	—
⚠️ Exhaust Manifold Nuts	30	22	Apply anti-seize, work hot-to-cold
⚠️ Flywheel Bolts	95	70	Often TTY, tighten in star pattern
⚠️ Gasket Bolts	25	19	—
⚠️ Gasket Surface Bolts	26	19	Clean mating surfaces
Mounting Bolts	34	25	—
⚠️ Mounting Bolts	59	44	—
⚠️ Mounting Bolts	60	44	—
⚠️ Oil Drain Plug	35	26	Use new crush washer
⚠️ Power Steering Pump Bolts	25	18	—
Sensor Bolts	14	10	—
Sensor Mounting Bolts	14	10	—
⚠️ Starter Mounting Bolts	50	37	—
⚠️ Transmission-to-Engine Bolts	55	41	—

The primary torque specification for engine r&r on a 2008-2010 Hummer H3 Alpha is 25 Nm (18 lb-ft).

There are 20 torque specifications for engine r&r on the 2008-2010 Hummer H3 Alpha 5.3L V8, covering all related fasteners and components.