Chevrolet Silverado / GMC Sierra. Manual — part 1795
Fig. 9: View Of Spark Plug Wires
Courtesy of GENERAL MOTORS CORP.
6. Remove the spark plug wires from the spark plugs.
1. Twist the spark plug wire boot a 1/2 turn.
2. Pull only on the boot in order to remove the wire from the spark plug.
7. Remove the spark plug wires from the ignition coils.
1. Twist the spark plug wire boot a 1/2 turn.
2. Pull only on the boot in order to remove the wire from the ignition coil.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 10: View Of Steering Shaft, Coupling Bolt & Nut
Courtesy of GENERAL MOTORS CORP.
8. Mark the relationship of the upper intermediate steering shaft to the steering column.
9. Remove the steering shaft coupling bolt (2) and nut (1) from the upper intermediate steering
shaft.
10. Separate the upper intermediate steering shaft (3) from the steering column, position both
shafts out of the way.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 11: View Of Exhaust Manifold, Manifold Bolts & Gasket
Courtesy of GENERAL MOTORS CORP.
11. Remove the exhaust manifold bolts, and exhaust manifold.
12. Remove and discard the exhaust manifold gasket.
13. Remove and discard the catalytic converter seal.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 12: View Of Exhaust Manifold Heat Shield & Bolts
Courtesy of GENERAL MOTORS CORP.
14. If replacing the exhaust manifold, remove the exhaust manifold heat shield bolts, and shield
from the exhaust manifold.
Installation Procedure
IMPORTANT:
Tighten the exhaust manifold bolts as specified in the
service procedure. Improperly installed and/or leaking
exhaust manifold gaskets may affect vehicle emissions
and/or On-Board Diagnostic (OBD) II system performance.
The cylinder head exhaust manifold bolt hole threads must
be clean and free of debris or threadlocking material.
Do not apply sealant to the first 3 threads of the bolt.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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