2008-2010 Hummer H3 Alpha Knock Sensor Torque Specs

5.3L V8

Applies to 2008, 2009, and 2010 Hummer H3 Alpha

Labor Time:2 hours

Torque Values (11 specifications)

Component	Nm	lb-ft	Notes
Cover Bolts	20	15	—
Cover Bolts	20	15	—
Electrical Connector Bolts	8	6	—
⚠️ Gasket Bolts	25	19	—
⚠️ Gasket Surface Bolts	26	19	Clean mating surfaces
⚠️ Knock Sensor	20	15	Torque critical for function
Mounting Bolts	34	25	—
⚠️ Mounting Bolts	59	44	—
⚠️ Mounting Bolts	60	44	—
Sensor Bolts	14	10	—
Sensor Mounting Bolts	14	10	—

The primary torque specification for knock sensor on a 2008-2010 Hummer H3 Alpha is 20 Nm (15 lb-ft).

There are 11 torque specifications for knock sensor on the 2008-2010 Hummer H3 Alpha 5.3L V8, covering all related fasteners and components.