Installation Procedure

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of 6L90-E Exhaust Pipe Hanger Bracket & Bolts

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice .

If equipped with a 6L90-E automatic transmission, RPO MYD, install the exhaust pipe hanger bracket and bolts.
Tighten: Tighten the bolts to 25 N.m (18 lb ft).

Fig 2: View Of RPO MW7 Exhaust Pipe Hanger Bracket, Bolts & Studs

Courtesy of GENERAL MOTORS CORP.

If equipped with a Allison® automatic transmission, RPO MW7, install the exhaust pipe hanger bracket and bolt/stud.
Tighten: Tighten the bolt/stud to 25 N.m (18 lb ft).

Fig 3: View Of Exhaust Pipe Hanger Bracket & Bolts

Courtesy of GENERAL MOTORS CORP.

If equipped with a 4L80-E automatic transmission, RPO MT1, install the exhaust pipe hanger bracket and bolts.
Tighten: Tighten the bolts to 25 N.m (18 lb ft).
If equipped with a 6.6L engine, install the catalytic converter. Refer to Catalytic Converter Replacement (4.3L) or Catalytic Converter Replacement (4.8L, 5.3L, 6.0L, 6.2L) or Catalytic Converter Replacement (6.6L) .
If equipped with a 6.0L engine, install the left catalytic converter. Refer to Catalytic Converter Replacement - Left Side (6.0L - Cab/Chassis) .
If equipped with a 6.0L engine, install the exhaust manifold pipe. Refer to Exhaust Manifold Pipe Replacement (6.0L - Cab/Chassis) .