Installation Procedure

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Install the exhaust manifold pipe hanger bracket.

Fig 1: Installing Exhaust Manifold Pipe Hanger Bracket

Courtesy of GENERAL MOTORS CORP.

If equipped with a 4L60E transmission, install the exhaust pipe hanger bracket bolts.
NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Tighten

Tighten the bolts to 12 N.m (106 lb in).

Fig 2: Installing Exhaust Pipe Hanger Bracket Bolts

Courtesy of GENERAL MOTORS CORP.

If equipped with a 4L80E transmission, install the exhaust pipe hanger bracket bolts.
Tighten

Tighten the bolts to 12 N.m (106 lb in).
Install the catalytic converter. Refer to CATALYTIC CONVERTER REPLACEMENT (4.8L AND 5.3L ENGINES) or CATALYTIC CONVERTER REPLACEMENT (6.0L AND 8.1L ENGINES) .
Install the exhaust manifold pipe. Refer to EXHAUST MANIFOLD PIPE REPLACEMENT (6.0L AND 8.1L ENGINES) .