Chevrolet 2007 Avalanche Owner's Manual page 567

Engine
5.3L
5.3L V8 Flexible Fuel
with Active Fuel
Management™ (Iron)
5.3L V8 Flexible Fuel with
Active Fuel Management™
(Aluminum Block)
6.0L V8 with Active Fuel
Management™
Engine Specifications
VIN Code
J
0
3
Y
Transmission
Automatic
Automatic
Automatic
Automatic
Spark Plug Gap
0.040 in (1.01 mm)
0.040 in (1.01 mm)
0.040 in (1.01 mm)
0.040 in (1.01 mm)
567