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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical - 2.5L (LCV)) >> Repair Instructions >> Exhaust Manifold Installation

Exhaust Manifold Installation

WARNING: This page is about a different variant/trim than selected.
Fig 1: Exploded View Of Exhaust Manifold Components And Bolts With Tightening Sequence
GM5166451Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
1 Exhaust Manifold Gasket
2 Exhaust Manifold
3 Exhaust Manifold Bolt (Qty: 5)
CAUTION:

Refer to Fastener Caution .

CAUTION:

This vehicle is equipped with torque-to-yield or single use fasteners. Install a NEW torque-to-yield or single use fastener when installing this component. Failure to replace the torque-to-yield or single use fastener could cause damage to the vehicle or component.

NOTE:

Fasteners have adhesive patch and must be tightened to final torque within 5 minutes.

NOTE:

Tighten the NEW exhaust manifold to cylinder head bolts three passes in sequence.


Tighten 
20 N.m (15 lb ft)
4 Exhaust Manifold Heat Shield
5 Exhaust Manifold Heat Shield Bolt (Qty: 2)
Tighten 
14 N.m (124 lb in)
6 Exhaust Manifold Heat Shield Bolt (Qty: 1)
Tighten 
14 N.m (124 lb in)
7 Oxygen Sensor
NOTE:

Coat the threads of the oxygen sensor with anti-seize. Refer to Adhesives, Fluids, Lubricants, and Sealers .


Tighten 
42 N.m (31 lb ft)