Specifications Comparison: 2015 GMC Sierra 1500 vs 2023 GMC Sierra 1500

Seating Capacity

Trim	Engine	Seating Capacity
1500 Crew Cab	4.3L V6	6
1500 Crew Cab	4.3L V6	6
1500 Crew Cab Denali	5.3L V8	6
1500 Crew Cab Denali	5.3L V8	6
1500 Crew Cab SLE	4.3L V6	6
1500 Crew Cab SLE	4.3L V6	6
1500 Crew Cab SLT	5.3L V8	6
1500 Crew Cab SLT	5.3L V8	6
1500 Extended Cab	4.3L V6	6
1500 Extended Cab	4.3L V6	6
1500 Extended Cab SLE	4.3L V6	6
1500 Extended Cab SLE	4.3L V6	6
1500 Extended Cab SLT	5.3L V8	6
1500 Extended Cab SLT	5.3L V8	6
1500 Regular Cab	4.3L V6	3
1500 Regular Cab	4.3L V6	3
1500 Regular Cab SLE	4.3L V6	3
1500 Regular Cab SLE	4.3L V6	3

Trim	Engine	Seating Capacity	Doors
Denali Crew Cab 147"	5.3L V8	5	4
Denali Crew Cab 147"	5.3L V8	5	4
Denali Crew Cab 157"	5.3L V8	5	4
Elevation Crew Cab 147"	2.7L	6	4
Elevation Double Cab 147"	2.7L	6	4
Elevation Crew Cab 147" w/ 3SB	2.7L	6	4
Elevation Crew Cab 147" w/ 3VL	2.7L	6	4
Elevation Crew Cab 157"	2.7L	6	4
Elevation Double Cab 147" w/ 3SB	2.7L	6	4
Elevation Double Cab 147" w/ 3VL	2.7L	6	4
Pro Crew Cab 147"	2.7L	6
Pro Double Cab 147"	2.7L	6
Pro Reg Cab 126"	2.7L	3	2
Pro Reg Cab 140"	2.7L	3	2
Pro Crew Cab 147"	2.7L	6	4
Pro Crew Cab 157"	2.7L	6	4
Pro Double Cab 147"	2.7L	6	4
Pro Reg Cab 126"	2.7L	3	2
Pro Reg Cab 140"	2.7L	3	2
SLE Crew Cab 147"	2.7L	6	4
SLE Double Cab 147"	2.7L	6	4
SLE Crew Cab 147"	2.7L	6	4
SLE Crew Cab 157"	2.7L	6	4
SLE Double Cab 147"	2.7L	6	4
SLT Crew Cab 147"	5.3L V8	6	4
SLT Crew Cab 147"	5.3L V8	6	4
SLT Crew Cab 157"	5.3L V8	6	4
AT4 Crew Cab 147"	3.0L I6	5	4
AT4 Crew Cab 157"	3.0L I6	5	4
AT4X Crew Cab 147"	6.2L V8	5	4
Denali Ultimate Crew Cab 147"	6.2L V8	5	4