12-4
Technical Data
Engine
4.3L V6
4.8L V8
5.3L V8
6.0L V8
Engine Drive Belt Routing
V6 Engines
Engine Specifications
VIN Code
X
A
4
G
V8 Engines
If the vehicle has a diesel engine,
see the Duramax diesel supplement
for more information.
Transmission
Automatic
Automatic
Automatic
Automatic
Spark Plug Gap
1.52 mm (0.060 in)
1.02 mm (0.040 in)
1.02 mm (0.040 in)
1.02 mm (0.040 in)