Flex Pipe Torque Specifications

1998-2000 GMC Envoy 4.3L V6 Vortec

Labor Time:1.5 hours

Torque Values (7 specifications)

Component	Nm	lb-ft	Notes
Cover Screws	11	8	—
⚠️ Flange Bolts	54	40	Apply anti-seize
Hanger Bolts	23	17	—
Heat Shield Bolts	16	12	—
⚠️ Manifold Nuts	39	29	Apply anti-seize
Mounting Bolts	27	20	—
⚠️ O2 Sensor	54	40	Apply anti-seize to threads

The primary torque specification for flex pipe on a 1998-2000 GMC Envoy is 11 Nm (8 lb-ft).

There are 7 torque specifications for flex pipe on the 1998-2000 GMC Envoy 4.3L V6 Vortec, covering all related fasteners and components.