Chevrolet 2008 Silverado 1500 Pickup Owner's Manual page 541

Engine
4.3L V6
4.8L V8
5.3L V8 Flexible Fuel with
Active Fuel Management™
(Iron Block)
5.3L V8 Flexible Fuel with
Active Fuel Management™
(Aluminum Block)
5.3L V8 with Active
Fuel Management™
(Aluminum Block)
5.3L V8 with Active Fuel
Management™ (Iron Block)
6.0L V8 (Iron Block)
6.0L V8 with Active
Fuel Management™
(Aluminum Block)
Engine Specifications
VIN Code
X
C
0
3
M
J
K
Y
Transmission
Automatic
Automatic
Automatic
Automatic
Automatic
Automatic
Automatic
Automatic
Spark Plug Gap
0.060 in (1.52 mm)
0.040 in (1.01 mm)
0.040 in (1.01 mm)
0.040 in (1.01 mm)
0.040 in (1.01 mm)
0.040 in (1.01 mm)
0.040 in (1.01 mm)
0.040 in (1.01 mm)
5-135