GMC 2011 Sierra - Manual (Page 559)

Black plate (5,1) GMC Sierra Owner Manual - 2011
Technical Data 12-5
Engine Specifications
Engine VIN Code Transmission Spark Plug Gap
4.3L V6 (LU3) X Automatic 1.52 mm (0.060 in)
4.8L V8 (L20) A Automatic 1.02 mm (0.040 in)
5.3L V8 FlexFuel with
Active Fuel Management™
(Iron Block) (LMG)
0 Automatic 1.02 mm (0.040 in)
5.3L V8 FlexFuel with
Active Fuel Management™
(Aluminum Block) (LC9)
3 Automatic 1.02 mm (0.040 in)
6.0L V8 (Iron Block) (LC8) B Automatic 1.02 mm (0.040 in)
6.0L V8 (Iron Block) (L96) G Automatic 1.02 mm (0.040 in)
6.2L V8 FlexFuel
(Aluminum Block) (L9H)
2 Automatic 1.02 mm (0.040 in)