GMC 2009 Sierra 1500 Crew Cab Owner's Manual page 543

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™ (Iron Block)
5.3L V8 with Active
Fuel Management™
(Aluminum Block)
6.0L V8 (Iron Block)
6.0L V8 with Active
Fuel Management™
(Aluminum Block)
6.2L V8 Flexible Fuel
(Aluminum Block)
Engine Specifications
VIN Code
X
C
0
3
J
M
K
Y
2
Transmission
Automatic
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)
0.040 in (1.01 mm)
5-133