Question 1

What is the torque spec for o2 sensor - downstream on a 2015-2020 GMC Yukon?

Accepted Answer

The primary torque specification for o2 sensor - downstream on a 2015-2020 GMC Yukon is 45 Nm (33 lb-ft). Note: Apply anti-seize

Question 2

How many torque specs are there for GMC Yukon o2 sensor - downstream?

Accepted Answer

There are 12 torque specifications for o2 sensor - downstream on the 2015-2020 GMC Yukon 5.3L V8, covering all related fasteners and components.

Component	Nm	lb-ft	Notes
⚠️ Exhaust Flange Bolts	45	33	Apply anti-seize
Exhaust Flange Bolts	45	33	Apply anti-seize
⚠️ Flange Bolts	59	44	—
Flange Bolts	59	44	—
Hanger Bolts	25	19	—
Hanger Bolts	25	19	—
Heat Shield Bolts	10	7	—
Heat Shield Bolts	10	7	—
Mounting Bolts	34	25	—
Mounting Bolts	34	25	—
⚠️ O2 Sensor	45	33	Apply anti-seize to threads only
O2 Sensor	45	33	Apply anti-seize to threads only

O2 Sensor - Downstream Torque Specifications

Torque Values (12 specifications)