Specifications Comparison: 2003 GMC Sierra 2500 vs 2022 GMC Sierra 2500

Seating Capacity

Trim	Engine	Seating Capacity
2500 Extended Cab	V8	6
2500 Extended Cab SLE	V8	6
2500 Extended Cab SLT	V8	6
2500 Regular Cab	V8	3
2500 Regular Cab SLE	V8	3
HD 2500 Crew Cab	V8	6
HD 2500 Crew Cab	V8	6
HD 2500 Crew Cab SLE	V8	6
HD 2500 Crew Cab SLE	V8	6
HD 2500 Crew Cab SLT	V8	6
HD 2500 Crew Cab SLT	V8	6
HD 2500 Extended Cab	V8	6
HD 2500 Extended Cab	V8	6
HD 2500 Extended Cab SLE	V8	6
HD 2500 Extended Cab SLE	V8	6
HD 2500 Extended Cab SLT	V8	6
HD 2500 Extended Cab SLT	V8	6
HD 2500 Regular Cab	V8	3
HD 2500 Regular Cab	V8	3
HD 2500 Regular Cab SLE	V8	3
HD 2500 Regular Cab SLE	V8	3

Trim	Engine	Seating Capacity	Doors
HD Pro Crew Cab 159"	6.6L V8	6	4
HD Pro Crew Cab 172"	6.6L V8	6	4
HD Pro Double Cab 149"	6.6L V8	6	4
HD Pro Double Cab 162"	6.6L V8	6	4
HD Pro Reg Cab 142"	6.6L V8	3	2
HD Pro Crew Cab 159"	6.6L V8	6	4
HD Pro Crew Cab 172"	6.6L V8	6	4
HD Pro Double Cab 149"	6.6L V8	6	4
HD Pro Double Cab 162"	6.6L V8	6	4
HD Pro Reg Cab 142"	6.6L V8	3	2
HD SLE Crew Cab 159"	6.6L V8	6	4
HD SLE Crew Cab 172"	6.6L V8	6	4
HD SLE Double Cab 149"	6.6L V8	6	4
HD SLE Double Cab 162"	6.6L V8	6	4
HD SLE Reg Cab 142"	6.6L V8	3	2
HD SLE Crew Cab 159"	6.6L V8	6	4
HD SLE Crew Cab 172"	6.6L V8	6	4
HD SLE Double Cab 149"	6.6L V8	6	4
HD SLE Double Cab 162"	6.6L V8	6	4
HD SLE Reg Cab 142"	6.6L V8	3	2
HD SLT Crew Cab 159"	6.6L V8	6	4
HD SLT Crew Cab 172"	6.6L V8	6	4
HD SLT Double Cab 149"	6.6L V8	6	4
HD SLT Double Cab 162"	6.6L V8	6	4
HD SLT Crew Cab 159"	6.6L V8	6	4
HD SLT Crew Cab 172"	6.6L V8	6	4
HD SLT Double Cab 162"	6.6L V8	6	4
HD AT4 Crew Cab 159"	6.6L V8	5	4
HD AT4 Crew Cab 172"	6.6L V8	5	4
HD Denali Crew Cab 159"	6.6L V8	5	4
HD Denali Crew Cab 172"	6.6L V8	5	4