Chevrolet Silverado / GMC Sierra. Service manual — part 1815

Fig. 87: View Of Exhaust Manifold Bolt Tightening Sequence
Courtesy of GENERAL MOTORS CORP.

5. Tighten the exhaust pipe bolts in the sequence shown.

Tighten: Tighten the bolts to 53 N.m (39 lb ft).

6. Install the transmission. Refer to Transmission Replacement .

7. Install the turbocharger exhaust pipe. Refer to Turbocharger Exhaust Pipe Replacement

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

(6.6L).

EXHAUST SEAL REPLACEMENT (4.8L, 5.3L, 6.0L, 6.2L)

Removal Procedure

Fig. 88: View Of Exhaust Seals
Courtesy of GENERAL MOTORS CORP.

1. Remove 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).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

2. Remove and discard the appropriate exhaust seal (1 or 2). (1500 series shown, 2500 series

similar).

Installation Procedure

Fig. 89: View Of Exhaust Seals
Courtesy of GENERAL MOTORS CORP.

1. Install the NEW appropriate exhaust seal (1 or 2). (1500 series shown, 2500 series similar).

2. 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

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Replacement (6.6L).

EXHAUST SEAL REPLACEMENT (6.0L - CAB/CHASSIS)

Removal Procedure

Fig. 90: Identifying Appropriate Exhaust Seals & Gaskets
Courtesy of GENERAL MOTORS CORP.

1. Remove the left catalytic converter, if required. Refer to Catalytic Converter

Replacement - Left Side (6.0L - Cab/Chassis).

2. Remove the exhaust manifold pipe, if required. Refer to Exhaust Manifold Pipe

Replacement (6.0L - Cab/Chassis).

3. Remove and discard the appropriate exhaust seal (1) or gasket (2).

Installation Procedure

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado