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Engine Specifications
Engine VIN Code Transmission Spark Plug Gap
5.3L with Active Fuel
Management™
J Automatic 0.040 in (1.01 mm)
5.3L V8 Flexible Fuel with
Active Fuel Management™
(Iron)
0 Automatic 0.040 in (1.01 mm)
5.3L V8 Flexible Fuel with
Active Fuel Management™
(Aluminum Block)
3 Automatic 0.040 in (1.01 mm)
6.0L V8 with Active Fuel
Management™
Y Automatic 0.040 in (1.01 mm)
5-114