2003 GMC Sierra Battery Size

For the 2003 model year of GMC Sierra we have found 11 trims and 2 different types of battery.

Trim Name Battery Size
?BCI Group 48
V6 4.3L 600CCABCI Group 78
V6 4.3L 770CCA OptionalBCI Group 78
V8 4.8L 600CCABCI Group 78
V8 4.8L 770CCA OptionalBCI Group 78
V8 5.3L 600CCABCI Group 78
V8 6.0L 600CCABCI Group 78
V8 6.0L 770CCA OptionalBCI Group 78
V8 6.6L 770CCA DieselBCI Group 78
V8 8.1L 600CCABCI Group 78
V8 8.1L 770CCA OptionalBCI Group 78
Read More In The Owner's Manual...

GMC Sierra

GMC Sierra Image

Click on the name of the trim to open up the panel and learn more about the battery sizes and change periods.