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> GMC Cab Style Guide

GMC Cab Style Guide

Publish Date
September 28, 2018

Use this guide to determine which cab size your GMC truck is equipped with. If you have any questions, chat in or call our product experts at 877-216-5446.

GMC Canyon

This midsize truck replaced the smaller Sonoma/S-15 pickup in 2004. The 2004-2012 models were available in regular, extended, and crew cab options. After a three-year hiatus, the truck returned in 2015 with extended and crew cabs but without a regular cab option.

2015-2019 GMC Canyon

2015-2018 GMC Canyon crew cab.
2015-2019 GMC Canyon Crew Cab: Two rows of seating, four full-size doors.
2015-2018 GMC Canyon extended cab.
2015-2019 GMC Canyon Extended Cab: Two rows of seating, rear half doors.

2004-2012 GMC Canyon

2004-2012 GMC Canyon crew cab.
2004-2012 Crew Cab: Two rows of seating, four full-size doors.
2004-2012 GMC Canyon extended cab.
2004-2012 GMC Canyon Extended Cab: Two rows of seating, rear half doors.
2004-2012 GMC Canyon regular cab.
2004-2012 GMC Canyon Regular Cab: One row of seating, two full-size doors.

GMC S-15 Pickup

In production from 1982 through 2004, the S-15 pickup truck was available with regular, extended, and (from 2001 to 2004) crew cab options.

1982-2004 GMC S-15 Pickup

2001-2004 GMC S-15 Pickup crew cab.
2001-2004 GMC S-15 Pickup Crew Cab: Two rows of seating, four full-size doors.
1982-2004 GMC S-15 extended cab.
1982-2004 GMC S-15 Extended Cab: One row of seating, rear jump seat, one rear-opening back door.
1982-2004 GMC S-15 regular cab.
1982-2004 GMC S-15 Regular Cab: One row of seating, two full-size doors.

GMC Sierra 1500

While the Sierra name is often applied to older C/K pickup trucks, it wasn't until 1999 that GMC officially changed the name of their flagship pickup truck to Sierra. Prior to this, the Sierra name indicated a particular trim level. Depending on the year of your truck, available cab sizes include regular, extended, double, and crew.

Special Note: Later model Sierra pickup trucks feature three cab options, two of which are easily confused: double cabs and crew cabs. While both of these cabs feature standard (forward opening) rear doors, the rear doors on a double cab are approximately 3/4 the length of the front doors, while the rear doors on a crew cab are nearly the same length as the front doors.

If your truck is a 2007 model year, verify whether or not it is a Classic model prior to making your selection.

2014-2018 Sierra 1500

2014-2018 GMC Sierra 1500 crew cab.
2014-2018 GMC Sierra 1500 Crew Cab: Two rows of seating, four full-size doors.
2014-2018 GMC Sierra 1500 double cab.
2014-2018 GMC Sierra 1500 Double Cab: Two rows of seating, 3/4 size forward-opening rear doors.
2014-2018 GMC Sierra 1500 regular cab.
2014-2018 GMC Sierra 1500 Regular Cab: One row of seating, two full-size doors.

2011-2013 GMC Sierra 1500

2011-2013 GMC Sierra 1500 crew cab.
2011-2013 GMC Sierra 1500 Crew Cab: Two rows of seating, four full-size doors.
2011-2013 GMC Sierra 1500 extended cab.
2011-2013 GMC Sierra 1500 Extended Cab: Two rows of seating, rear half doors.
2011-2014 GMC Sierra 1500 regular cab.
2011-2013 GMC Sierra 1500 Regular Cab: One row of seating, two full-size doors.

2007-2010 GMC Sierra 1500

2007-2010 GMC Sierra 1500 crew cab.
2007-2010 GMC Sierra 1500 Crew Cab: Two rows of seating, four full-size doors.
2007-2010 GMC Sierra 1500 extended cab.
2007-2010 GMC Sierra 1500 Extended Cab: Two rows of seating, rear half doors.
2007-2010 GMC Sierra 1500 regular cab.
2007-2010 GMC Sierra 1500 Regular Cab: One row of seating, two full-size doors.

1999-2006 and 2007 Classic

2001-2006 (07) Classic Sierra crew cab.
2001-2006 and 2007 Classic Sierra Crew Cab: Two rows of seating, four full-size doors.
1999-2006 and 2007 Classic Extended Cab
1999-2006 and 2007 Classic Extended Cab: Two rows of seating, rear half doors.
1999-2006 and 2007 Classic Sierra regular cab.
1999-2006 and 2007 Classic Sierra Regular Cab: One row of seating, two full-size doors.

GMC Sierra 2500 and 3500

These 3/4 and 1-ton Sierra pickups feature the same cab options as the half-ton 1500 trucks with regular, extended, double, and crew cab options available.

Special Note: Later model Sierra pickup trucks feature three cab options, two of which are easily confused: double cabs and crew cabs. The rear doors on a double cab are approximately 3/4 the length of the front doors while the rear doors on a crew cab are nearly the same length as the front doors. If your truck is a 2007 model year, verify whether or not it is a Classic model prior to making your selection.

2017-2019 Sierra 2500 and 3500

2017-2018 GMC Sierra 2500 and 3500 crew cab.
2017-2019 GMC Sierra 2500 and 3500 Crew Cab. Two rows of seating, four full-size doors.
2017-2018 GMC Sierra 2500 and 3500 double cab.
2017-2019 GMC Sierra 2500 and 3500 Double Cab: Two rows of seating, 3/4 size forward-opening rear doors.
2017-2018 GMC Sierra 2500 and 3500 regular cab.
2017-2019 GMC Sierra 2500 and 3500 Regular Cab: One row of seating, two full-size doors.

2015-2016 GMC Sierra 2500 and 3500

2015-2016 GMC Sierra 2500 and 3500 crew cab.
2015-2016 GMC Sierra 2500 and 3500 Crew Cab. Two rows of seating, four full-size doors.
2015-2016 GMC Sierra 2500 and 3500 extended cab.
2015-2016 GMC Sierra 2500 and 3500 Extended Cab. Two rows of seating, rear half doors.
2015-2016 GMC Sierra 2500 and 3500 regular cab.
2015-2016 GMC Sierra 2500 and 3500 Regular Cab: One row of seating, two full-size doors.

2011-2014 GMC Sierra 2500 and 3500

2011-2014 GMC Sierra 2500 and 3500 crew cab.
2011-2014 GMC Sierra 2500 and 3500 Crew Cab.: Two rows of seating, four full-size doors.
2011-2014 GMC Sierra 2500 and 3500 extended cab.
2011-2014 GMC Sierra 2500 and 3500 Extended Cab: Two rows of seating, rear half doors.
2011-2014 GMC Sierra 2500 and 3500 regular cab.
2011-2014 GMC Sierra 2500 and 3500 Regular Cab: One row of seating, two full-size doors.

2007-2010 GMC Sierra 2500 and 3500

2007-2010 GMC Sierra 2500 and 3500 crew cab.
2007-2010 GMC Sierra 2500 and 3500 Crew Cab: Two rows of seating, four full-size doors.
2007-2010 GMC Sierra 2500 and 3500 Extended Cab
2007-2010 GMC Sierra 2500 and 3500 Extended Cab: Two rows of seating, rear half doors.
2007-2010 Sierra 2500 and 3500 regular cab.
2007-2010 Sierra 2500 and 3500 Regular Cab: One row of seating, two full-size doors.
2001-2006 and 2007 Classic Sierra 2500 and 3500 crew cab.
2001-2006 and 2007 Classic Sierra 2500 and 3500 Crew Cab: Two rows of seating, four full-size doors.
1999-2006 and 2007 Classic Sierra 2500 and 3500 Extended Cab
1999-2006 and 2007 Classic Sierra 2500 and 3500 Extended Cab: Two rows of seating, rear half doors.
1999-2006 and 2007 Classic Sierra 2500 and 3500 regular cab.
1999-2006 and 2007 Classic Sierra 2500 and 3500 Regular Cab: One row of seating, two full-size doors.

GMC C/K 1500

Often grouped together with later model GMC pickup trucks under the Sierra name, the C/K series, which started production in 1988, is sufficiently distinct from later models to afford its own category. The half-ton truck was available with regular cabs, extended cabs, and, from 1992 onward, crew cabs.

Special Note: On some C/K 1500 extended cab models, there is only one rear door that actually opens. These are still considered extended cabs.

1992-1998 GMC C/K 1500 crew cab.
1992-1998 GMC C/K 1500 Crew Cab: Two rows of seating, four full-size doors.
1988-1998 GMC C/K 1500 extended cab.
1988-1998 GMC C/K 1500 Extended Cab: Two rows of seating, rear half door(s).
1988-1998 GMC C/K 1500 regular cab.
1988-1998 GMC C/K 1500 Regular Cab: One row of seating, two full-size doors.

GMC C/K 2500 and 3500

Distinct from the later Sierra line of pickup trucks, the C/K series debuted in 1988. These trucks were available with regular, extended, and crew cabs. Both 6.5 and 8-foot beds were available.

Special Note: On some C/K 2500-3500 extended cab models, there is only one rear door that actually opens. These are still considered extended cabs.

1992-1998 GMC C/K 2500 and 3500 crew cab.
1992-1998 GMC C/K 2500 and 3500 Crew Cab: Two rows of seating, four full-size doors.
1988-1998 GMC C/K 2500 and 3500 extended cab.
1988-1998 GMC C/K 2500 and 3500 Extended Cab: Two rows of seating, rear half door(s).
1988-1998 GMC C/K 1500 regular cab.
1988-1998 GMC C/K 2500 and 3500 Regular Cab: One row of seating, two full-size doors.

If you have questions about GMC truck accessories, give our product experts a call at 877-216-5446. We're here to help you.