GMC 2007 Sierra - Page 618

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