The GMC Sierra 3500 seating capacity is between 3 to 6 passengers, as specified in our data below, organized by trim, option package, and model year.
Check out the Seating Capacity specifications for other makes and models.
2024 GMC Sierra 3500 Seating Capacity
The 2024 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2024 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
Doors |
| HD Denali Ultimate Crew Cab 172" Diesel |
5 |
4 |
| HD Denali Ultimate Crew Cab 159" Diesel |
5 |
4 |
| HD Denali Crew Cab 172" Diesel |
5 |
4 |
| HD Denali Crew Cab 159" Diesel |
5 |
4 |
| HD AT4 Crew Cab 172" Diesel |
5 |
4 |
| HD AT4 Crew Cab 159" Diesel |
5 |
4 |
2024 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
Doors |
| HD SLT Crew Cab 172" Diesel |
6 |
4 |
| HD SLT Crew Cab 159" Diesel |
6 |
4 |
| HD SLT Crew Cab 172" Diesel |
6 |
4 |
| HD SLT Crew Cab 159" Diesel |
6 |
4 |
| HD SLE Reg Cab 142" Diesel |
3 |
2 |
| HD SLE Double Cab 162" Diesel |
6 |
4 |
2024 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
Doors |
| HD SLE Crew Cab 172" Diesel |
6 |
4 |
| HD SLE Crew Cab 159" Diesel |
6 |
4 |
| HD SLE Reg Cab 142" Diesel |
3 |
2 |
| HD SLE Double Cab 162" Diesel |
6 |
4 |
| HD SLE Crew Cab 172" Diesel |
6 |
4 |
| HD SLE Crew Cab 159" Diesel |
6 |
4 |
2024 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
Doors |
| HD Pro Reg Cab 142" Diesel |
3 |
2 |
| HD Pro Double Cab 162" Diesel |
6 |
4 |
| HD Pro Crew Cab 172" Diesel |
6 |
4 |
| HD Pro Crew Cab 159" Diesel |
6 |
4 |
| HD Pro Reg Cab 142" Diesel |
3 |
2 |
| HD Pro Double Cab 162" Diesel |
6 |
4 |
2024 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
Doors |
| HD Pro Crew Cab 172" Diesel |
6 |
4 |
| HD Pro Crew Cab 159" Diesel |
6 |
4 |
2023 GMC Sierra 3500 Seating Capacity
The 2023 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2023 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
Doors |
| HD Denali Crew Cab 172" Diesel |
5 |
4 |
| HD Denali Crew Cab 159" Diesel |
5 |
4 |
| HD AT4 Crew Cab 172" Diesel |
5 |
4 |
| HD AT4 Crew Cab 159" Diesel |
5 |
4 |
| HD SLT Crew Cab 172" Diesel |
6 |
4 |
| HD SLT Crew Cab 159" Diesel |
6 |
4 |
2023 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
Doors |
| HD SLT Crew Cab 172" Diesel |
6 |
4 |
| HD SLT Crew Cab 159" Diesel |
6 |
4 |
| HD SLE Reg Cab 142" Diesel |
3 |
2 |
| HD SLE Double Cab 162" Diesel |
6 |
4 |
| HD SLE Crew Cab 172" Diesel |
6 |
4 |
| HD SLE Crew Cab 159" Diesel |
6 |
4 |
2023 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
Doors |
| HD SLE Reg Cab 142" Diesel |
3 |
2 |
| HD SLE Double Cab 162" Diesel |
6 |
4 |
| HD SLE Crew Cab 172" Diesel |
6 |
4 |
| HD SLE Crew Cab 159" Diesel |
6 |
4 |
| HD Pro Reg Cab 142" Diesel |
3 |
2 |
| HD Pro Double Cab 162" Diesel |
6 |
4 |
2023 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
Doors |
| HD Pro Crew Cab 172" Diesel |
6 |
4 |
| HD Pro Crew Cab 159" Diesel |
6 |
4 |
| HD Pro Reg Cab 142" Diesel |
3 |
2 |
| HD Pro Double Cab 162" Diesel |
6 |
4 |
| HD Pro Crew Cab 172" Diesel |
6 |
4 |
| HD Pro Crew Cab 159" Diesel |
6 |
4 |
2022 GMC Sierra 3500 Seating Capacity
The 2022 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2022 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
Doors |
| HD Denali Crew Cab 172" Diesel |
5 |
4 |
| HD Denali Crew Cab 159" Diesel |
5 |
4 |
| HD AT4 Crew Cab 172" Diesel |
5 |
4 |
| HD AT4 Crew Cab 159" Diesel |
5 |
4 |
| HD SLT Crew Cab 172" Diesel |
6 |
4 |
| HD SLT Crew Cab 159" Diesel |
6 |
4 |
2022 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
Doors |
| HD SLT Crew Cab 172" Diesel |
6 |
4 |
| HD SLT Crew Cab 159" Diesel |
6 |
4 |
| HD SLE Reg Cab 142" Diesel |
3 |
2 |
| HD SLE Double Cab 162" Diesel |
6 |
4 |
| HD SLE Crew Cab 172" Diesel |
6 |
4 |
| HD SLE Crew Cab 159" Diesel |
6 |
4 |
2022 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
Doors |
| HD SLE Reg Cab 142" Diesel |
3 |
2 |
| HD SLE Double Cab 162" Diesel |
6 |
4 |
| HD SLE Crew Cab 172" Diesel |
6 |
4 |
| HD SLE Crew Cab 159" Diesel |
6 |
4 |
| HD Pro Reg Cab 142" Diesel |
3 |
2 |
| HD Pro Double Cab 162" Diesel |
6 |
4 |
2022 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
Doors |
| HD Pro Crew Cab 172" Diesel |
6 |
4 |
| HD Pro Crew Cab 159" Diesel |
6 |
4 |
| HD Pro Reg Cab 142" Diesel |
3 |
2 |
| HD Pro Double Cab 162" Diesel |
6 |
4 |
| HD Pro Crew Cab 172" Diesel |
6 |
4 |
| HD Pro Crew Cab 159" Diesel |
6 |
4 |
2021 GMC Sierra 3500 Seating Capacity
The 2021 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2021 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
Doors |
| HD Regular Cab SLE Diesel |
3 |
2 |
| HD Regular Cab SLE Diesel |
3 |
2 |
| HD Regular Cab SLE Diesel |
3 |
2 |
| HD Regular Cab SLE Diesel |
3 |
2 |
| HD Regular Cab Diesel |
3 |
2 |
| HD Regular Cab Diesel |
3 |
2 |
2021 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
Doors |
| HD Regular Cab Diesel |
3 |
2 |
| HD Regular Cab Diesel |
3 |
2 |
| HD Extended Cab SLE Diesel |
6 |
4 |
| HD Extended Cab SLE Diesel |
6 |
4 |
| HD Extended Cab SLE Diesel |
6 |
4 |
| HD Extended Cab SLE Diesel |
6 |
4 |
2021 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
Doors |
| HD Extended Cab Diesel |
6 |
4 |
| HD Extended Cab Diesel |
6 |
4 |
| HD Extended Cab Diesel |
6 |
4 |
| HD Extended Cab Diesel |
6 |
4 |
| HD Crew Cab SLT Diesel |
6 |
4 |
| HD Crew Cab SLT Diesel |
6 |
4 |
2021 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
Doors |
| HD Crew Cab SLT Diesel |
6 |
4 |
| HD Crew Cab SLT Diesel |
6 |
4 |
| HD Crew Cab SLE Diesel |
6 |
4 |
| HD Crew Cab SLE Diesel |
6 |
4 |
| HD Crew Cab SLE Diesel |
6 |
4 |
| HD Crew Cab SLE Diesel |
6 |
4 |
2021 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
Doors |
| HD Crew Cab Denali Diesel |
5 |
4 |
| HD Crew Cab Denali Diesel |
5 |
4 |
| HD Crew Cab AT4 Diesel |
5 |
4 |
| HD Crew Cab AT4 Diesel |
5 |
4 |
| HD Crew Cab Diesel |
6 |
4 |
| HD Crew Cab Diesel |
6 |
4 |
2021 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
Doors |
| HD Crew Cab Diesel |
6 |
4 |
| HD Crew Cab Diesel |
6 |
4 |
2020 GMC Sierra 3500 Seating Capacity
The 2020 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2020 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab |
3 |
| HD 3500 Regular Cab |
3 |
| HD 3500 Extended Cab SLE |
6 |
| HD 3500 Extended Cab SLE |
6 |
2020 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Extended Cab |
6 |
| HD 3500 Extended Cab |
6 |
| HD 3500 Crew Cab SLT |
6 |
| HD 3500 Crew Cab SLT |
6 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab SLE |
6 |
2020 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab Denali |
5 |
| HD 3500 Crew Cab AT4 |
5 |
| HD 3500 Crew Cab |
6 |
| HD 3500 Crew Cab |
6 |
| HD 3500 Crew Cab 172" SLT |
6 |
| HD 3500 Crew Cab 159" SLT |
6 |
2020 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab 172" SLT |
6 |
| HD 3500 Crew Cab 159" SLT |
6 |
| HD 3500 Reg Cab 142" SLE |
3 |
| HD 3500 Double Cab 162" SLE |
6 |
| HD 3500 Crew Cab 172" SLE |
6 |
| HD 3500 Crew Cab 159" SLE |
6 |
2020 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Reg Cab 142" SLE |
3 |
| HD 3500 Double Cab 162" SLE |
6 |
| HD 3500 Crew Cab 172" SLE |
6 |
| HD 3500 Crew Cab 159" SLE |
6 |
| HD 3500 Crew Cab 172" Denali |
5 |
| HD 3500 Crew Cab 159" Denali |
5 |
2020 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Reg Cab 142" |
3 |
| HD 3500 Double Cab 162" |
6 |
| HD 3500 Crew Cab 172" |
6 |
| HD 3500 Crew Cab 159" |
6 |
| HD 3500 Reg Cab 142" |
3 |
| HD 3500 Double Cab 162" |
6 |
2020 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab 172" |
6 |
| HD 3500 Crew Cab 159" |
6 |
| HD 3500 Crew Cab 172" AT4 |
5 |
| HD 3500 Crew Cab 159" AT4 |
5 |
2019 GMC Sierra 3500 Seating Capacity
The 2019 GMC Sierra 3500 seating capacity is between 5 to 6 passengers, depending on the trim.
2019 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| HD 3500 Crew Cab SLT |
6 |
| HD 3500 Crew Cab SLT |
6 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab Denali |
5 |
| HD 3500 Crew Cab Denali |
5 |
2019 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab |
6 |
| HD 3500 Crew Cab |
6 |
| HD 3500 Crew Cab 167.7" SLT |
6 |
| HD 3500 Crew Cab 153.7" SLT |
6 |
| HD 3500 Crew Cab 167.7" SLT |
6 |
| HD 3500 Crew Cab 153.7" SLT |
6 |
2019 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab 167.7" SLE |
6 |
| HD 3500 Crew Cab 153.7" SLE |
6 |
| HD 3500 Crew Cab 167.7" SLE |
6 |
| HD 3500 Crew Cab 153.7" SLE |
6 |
| HD 3500 Crew Cab 167.7" Denali |
5 |
| HD 3500 Crew Cab 153.7" Denali |
5 |
2019 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab 167.7" Denali |
5 |
| HD 3500 Crew Cab 153.7" Denali |
5 |
| HD 3500 Crew Cab 167.7" |
6 |
| HD 3500 Crew Cab 153.7" |
6 |
| HD 3500 Crew Cab 167.7" |
6 |
| HD 3500 Crew Cab 153.7" |
6 |
2018 GMC Sierra 3500 Seating Capacity
The 2018 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2018 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab |
3 |
| HD 3500 Regular Cab |
3 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLT |
5 |
2018 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Extended Cab SLE |
6 |
| HD 3500 Extended Cab SLE |
6 |
| HD 3500 Extended Cab |
6 |
| HD 3500 Extended Cab |
6 |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLT |
5 |
2018 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab Denali |
5 |
| HD 3500 Crew Cab Denali |
5 |
| HD 3500 Crew Cab |
6 |
| HD 3500 Crew Cab |
6 |
2017 GMC Sierra 3500 Seating Capacity
The 2017 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2017 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab |
3 |
| HD 3500 Regular Cab |
3 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLT |
5 |
2017 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Extended Cab SLE |
6 |
| HD 3500 Extended Cab SLE |
6 |
| HD 3500 Extended Cab |
6 |
| HD 3500 Extended Cab |
6 |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLT |
5 |
2017 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab Denali |
5 |
| HD 3500 Crew Cab Denali |
5 |
| HD 3500 Crew Cab |
6 |
| HD 3500 Crew Cab |
6 |
2016 GMC Sierra 3500 Seating Capacity
The 2016 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2016 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab |
3 |
| HD 3500 Regular Cab |
3 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLT |
5 |
2016 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Extended Cab SLE |
6 |
| HD 3500 Extended Cab SLE |
6 |
| HD 3500 Extended Cab |
6 |
| HD 3500 Extended Cab |
6 |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLT |
5 |
2016 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab Denali |
5 |
| HD 3500 Crew Cab Denali |
5 |
| HD 3500 Crew Cab |
6 |
| HD 3500 Crew Cab |
6 |
2015 GMC Sierra 3500 Seating Capacity
The 2015 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2015 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| HD 3500 Regular Cab Work Truck |
3 |
| HD 3500 Regular Cab Work Truck |
3 |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Extended Cab Work Truck |
6 |
| HD 3500 Extended Cab Work Truck |
6 |
2015 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLE |
6 |
| HD 3500 Extended Cab SLE |
6 |
| HD 3500 Crew Cab Work Truck |
6 |
| HD 3500 Crew Cab Work Truck |
6 |
2015 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab Denali |
5 |
| HD 3500 Crew Cab Denali |
5 |
2014 GMC Sierra 3500 Seating Capacity
The 2014 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2014 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab SLE |
6 |
2014 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab Denali |
5 |
| HD 3500 Crew Cab Denali |
5 |
2013 GMC Sierra 3500 Seating Capacity
The 2013 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2013 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLE |
6 |
| HD 3500 Extended Cab SLE |
6 |
2013 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab Denali |
5 |
| HD 3500 Crew Cab Denali |
5 |
2012 GMC Sierra 3500 Seating Capacity
The 2012 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2012 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLE |
6 |
| HD 3500 Extended Cab SLE |
6 |
2012 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab Denali |
5 |
| HD 3500 Crew Cab Denali |
5 |
2011 GMC Sierra 3500 Seating Capacity
The 2011 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2011 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLE |
6 |
| HD 3500 Extended Cab SLE |
6 |
2011 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab Denali |
5 |
| HD 3500 Crew Cab Denali |
5 |
2010 GMC Sierra 3500 Seating Capacity
The 2010 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2010 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLE |
6 |
| HD 3500 Extended Cab SLE |
6 |
2010 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab SLE |
6 |
2009 GMC Sierra 3500 Seating Capacity
The 2009 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2009 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLE |
6 |
| HD 3500 Extended Cab SLE |
6 |
2009 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab SLE |
6 |
2008 GMC Sierra 3500 Seating Capacity
The 2008 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2008 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLE |
6 |
| HD 3500 Extended Cab SLE |
6 |
2008 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab SLE |
6 |
2007 GMC Sierra 3500 Seating Capacity
The 2007 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2007 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Regular Cab SLE |
3 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLT |
5 |
| HD 3500 Extended Cab SLE |
6 |
| HD 3500 Extended Cab SLE |
6 |
2007 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLT |
5 |
| HD 3500 Crew Cab SLE |
6 |
| HD 3500 Crew Cab SLE |
6 |
| Classic 3500 Regular Cab SLE |
3 |
| Classic 3500 Regular Cab SLE |
3 |
2007 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| Classic 3500 Regular Cab SL |
3 |
| Classic 3500 Regular Cab SL |
3 |
| Classic 3500 Extended Cab SLT |
5 |
| Classic 3500 Extended Cab SLT |
5 |
| Classic 3500 Extended Cab SLE |
6 |
| Classic 3500 Extended Cab SLE |
6 |
2007 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| Classic 3500 Extended Cab SL |
6 |
| Classic 3500 Extended Cab SL |
6 |
| Classic 3500 Crew Cab SLT |
5 |
| Classic 3500 Crew Cab SLT |
5 |
| Classic 3500 Crew Cab SLE |
6 |
| Classic 3500 Crew Cab SLE |
6 |
2007 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| Classic 3500 Crew Cab SL |
6 |
| Classic 3500 Crew Cab SL |
6 |
2006 GMC Sierra 3500 Seating Capacity
The 2006 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2006 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| 3500 Regular Cab SLE |
3 |
| 3500 Regular Cab SLE |
3 |
| 3500 Regular Cab SL |
3 |
| 3500 Regular Cab SL |
3 |
| 3500 Extended Cab SLT |
5 |
| 3500 Extended Cab SLT |
5 |
2006 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| 3500 Extended Cab SLE |
6 |
| 3500 Extended Cab SLE |
6 |
| 3500 Extended Cab SL |
6 |
| 3500 Extended Cab SL |
6 |
| 3500 Crew Cab SLT |
5 |
| 3500 Crew Cab SLT |
5 |
2006 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| 3500 Crew Cab SLE |
6 |
| 3500 Crew Cab SLE |
6 |
| 3500 Crew Cab SL |
6 |
| 3500 Crew Cab SL |
6 |
2005 GMC Sierra 3500 Seating Capacity
The 2005 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2005 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| 3500 Regular Cab SLE |
3 |
| 3500 Regular Cab |
3 |
| 3500 Extended Cab SLT |
6 |
| 3500 Extended Cab SLT |
6 |
| 3500 Extended Cab SLE |
6 |
| 3500 Extended Cab SLE |
6 |
2005 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| 3500 Extended Cab |
6 |
| 3500 Extended Cab |
6 |
| 3500 Crew Cab SLT |
6 |
| 3500 Crew Cab SLT |
6 |
| 3500 Crew Cab SLE |
6 |
| 3500 Crew Cab SLE |
6 |
2005 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| 3500 Crew Cab |
6 |
| 3500 Crew Cab |
6 |
2004 GMC Sierra 3500 Seating Capacity
The 2004 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2004 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| 3500 Regular Cab SLE |
3 |
| 3500 Regular Cab |
3 |
| 3500 Extended Cab SLT |
6 |
| 3500 Extended Cab SLT |
6 |
| 3500 Extended Cab SLE |
6 |
| 3500 Extended Cab SLE |
6 |
2004 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| 3500 Extended Cab |
6 |
| 3500 Extended Cab |
6 |
| 3500 Crew Cab SLT |
6 |
| 3500 Crew Cab SLT |
6 |
| 3500 Crew Cab SLE |
6 |
| 3500 Crew Cab SLE |
6 |
2004 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| 3500 Crew Cab |
6 |
| 3500 Crew Cab |
6 |
2003 GMC Sierra 3500 Seating Capacity
The 2003 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2003 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| 3500 Regular Cab SLE |
3 |
| 3500 Regular Cab |
3 |
| 3500 Extended Cab SLT |
6 |
| 3500 Extended Cab SLT |
6 |
| 3500 Extended Cab SLE |
6 |
| 3500 Extended Cab SLE |
6 |
2003 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| 3500 Extended Cab |
6 |
| 3500 Extended Cab |
6 |
| 3500 Crew Cab SLT |
6 |
| 3500 Crew Cab SLT |
6 |
| 3500 Crew Cab SLE |
6 |
| 3500 Crew Cab SLE |
6 |
2003 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| 3500 Crew Cab |
6 |
| 3500 Crew Cab |
6 |
2002 GMC Sierra 3500 Seating Capacity
The 2002 GMC Sierra 3500 seating capacity is between 3 to 6 passengers, depending on the trim.
2002 GMC Sierra 3500 Seating Capacities
| Trim |
Seating Capacity |
| 3500 Regular Cab SLE |
3 |
| 3500 Regular Cab SL |
3 |
| 3500 Extended Cab SLT |
6 |
| 3500 Extended Cab SLT |
6 |
| 3500 Extended Cab SLE |
6 |
| 3500 Extended Cab SLE |
6 |
2002 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| 3500 Extended Cab SL |
6 |
| 3500 Extended Cab SL |
6 |
| 3500 Crew Cab SLT |
6 |
| 3500 Crew Cab SLT |
6 |
| 3500 Crew Cab SLE |
6 |
| 3500 Crew Cab SLE |
6 |
2002 GMC Sierra 3500 Seating Capacities Continued
| Trim |
Seating Capacity |
| 3500 Crew Cab SL |
6 |
| 3500 Crew Cab SL |
6 |
GMC Sierra 3500 Seating Capacity Data Brought To You By AutoPadre
Seating Capacity Model Comparisons
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