Specifications Comparison: 2003 Chevrolet Silverado 1500 vs 2015 Chevrolet Silverado 1500

Seating Capacity

Trim	Engine	Seating Capacity
Extended Cab	V6	6
Extended Cab	V8	6
Extended Cab LS	V6	6
Extended Cab LS	V8	6
Extended Cab LT	V8	5
Extended Cab LT	V8	5
Regular Cab	V6	3
Regular Cab	V6	3
Regular Cab LS	V6	3
Regular Cab LS	V6	3
HD Crew Cab LS	V8	6
HD Crew Cab LS	V8	6
HD Crew Cab LT	V8	5
HD Crew Cab LT	V8	5

Trim	Engine	Seating Capacity
Crew Cab High Country	5.3L V8	5
Crew Cab High Country	5.3L V8	5
Crew Cab LS	4.3L V6	6
Crew Cab LS	4.3L V6	6
Crew Cab LT	4.3L V6	6
Crew Cab LT	4.3L V6	6
Crew Cab LTZ	5.3L V8	6
Crew Cab LTZ	5.3L V8	6
Crew Cab Work	4.3L V6	6
Crew Cab Work	4.3L V6	6
Extended Cab LS	4.3L V6	6
Extended Cab LS	4.3L V6	6
Extended Cab LT	4.3L V6	6
Extended Cab LT	4.3L V6	6
Extended Cab LTZ	5.3L V8	6
Extended Cab LTZ	5.3L V8	6
Extended Cab Work	4.3L V6	6
Extended Cab Work	4.3L V6	6
Regular Cab LS	4.3L V6	3
Regular Cab LS	4.3L V6	3
Regular Cab LT	4.3L V6	3
Regular Cab LT	4.3L V6	3
Regular Cab Work	4.3L V6	3
Regular Cab Work	4.3L V6	3