GMC Sierra All Terrain models are discontinued off-road-oriented offerings with features that were very similar to the Sierra AT4 models that came to replace them.
As such, these variants of light- and heavy-duty trucks offered enhanced capabilities in addition to the premium refinement expected from the GMC brand.
Available Models: | Sierra 1500, Sierra HD | |
Model Year Availability | 2008 – 2019 | |
Engine(s) | 5.3L V8, 6.0L V8, 6.2L V8, 6.6L Duramax | |
Transmission(s) | 6-Speed Auto, 8-Speed Auto | |
Drive Wheels | Four-Wheel-Drive | |
Availability | U.S.A., Canada, Mexico, Middle East |
Sierra 1500 All Terrain
The Sierra 1500 All Terrain package traces back as early as the second-generation of the pickup truck, debuting in 2007 and arriving for the 2008 model year. When it arrived, the package included the following equipment:
- Z71 Off-Road Package
- Front and rear carpeted floor mats with embroidered “ALL TERRAIN” logo
- 18-inch x 8-inch (45.7 cm x 20.3 cm) chrome-clad aluminum wheels (RGA)
- P265/65R18 on-/off-road blackwall tires (QXN)
- Outside heated power-adjustable, power-folding body-colored mirrors
- Heavy-duty trailering equipment
- Rancho brand shocks that are White with Red letters
- Body-colored bodyside moldings with chrome accent
- Unique 4-bar horizontal grille insert with chrome surround
- “ALL TERRAIN” badging on the front fenders
- Unique sill plates
- Unique instrument cluster with Z71 logo and mechanical brushed aluminum accents for instrument panel
- Center console and switch trim plates
The Sierra 1500 All Terrain model received all-new styling for the 2014 model year, when the third-generation model entered the market. New additions to the package included front tow hooks, hill descent control, a transfer case shield, and a “carbon fiber-look seat accent” for SLT models equipped with the package.
In 2016 GMC announced the arrival of the Sierra All Terrain X, which was a special edition of the All Terrain model that featured exclusive premium content that enhanced off-road capability and provided an aggressive, monochromatic appearance.
When the current, fourth-generation Sierra 1500 model arrived for the 2019 model year (see 2019 GMC Sierra 1500 details), the All Terrain package was discontinued and replaced by the AT4 trim level, which offered customers the same off-roading competencies and bold appearance that were associate with the All Terrain sub-brand.
The All Terrain name was offered as a package on the following Sierra 1500 models:
- 2008-2013 GMC Sierra 1500 All Terrain
- 2015-2018 GMC Sierra 1500 All Terrain
- 2017-2018 GMC Sierra 1500 All Terrain X
Model Year(s) | 2008 – 2018 | |
Engine(s) | 5.3L V8, 6.2L V8 | |
Transmission(s) | 6-Speed Auto, 8-Speed Auto | |
Drive Wheels | Rear-Wheel, Four-Wheel-Drive | |
Availability | U.S.A., Canada, Mexico, Middle East |
- See complete GMC Sierra 1500 All Terrain information and details.
- See complete GMC Sierra 1500 AT4 information and details.
Sierra HD All Terrain
The All Terrain nomenclature was first meshed with the Sierra HD model back when the automaker debuted the 2011 Sierra All Terrain HD Concept. However, a production model would not enter the market until the 2015 model year, when GMC introduced the Sierra HD All Terrain as a refined, off-road-inspired execution of the brand’s capability, blending exclusive design features with the versatility of 4WD.
The All Terrain name was offered as a package on the following Sierra HD models:
- 2015-2019 GMC Sierra HD All Terrain
- 2017-2019 GMC Sierra HD All Terrain X
Like the Sierra 1500 All Terrain, the package was offered on SLE or SLT trims, but this would change by the 2018 model year, at which time the package was only offered for SLT models. It included the following content:
- Electronically controlled transfer case
- Z71 Off Road package
- Rancho twin-tube shocks
- Hill descent control
- Skid plate
- 6.0L gas engine was standard, and the Duramax turbo-diesel was an available option
- Chrome surround on the grille
- Exterior graphics
- Aluminum underbody shields
- Unique 18-inch six-spoke chrome cast-aluminum wheels
- Twenty-inch chrome aluminum wheels are available on 2500HD
- 3500HD models also include adjustable outside camper mirrors with a chrome cap
- Light-emitting diode signature headlamps
- Body-color bumpers (chrome bumpers available)
- Chrome mirrors covers
- Chrome body side moldings
- Chrome front-lower bumper plate
- Carbon fiber-inspired interior
- ALL TERRAIN logo on the instrument cluster
- Standard rearview camera system
For the 2017 model year, GMC released an even more potent All Terrain X package for the Sierra HD, which offered a customized appearance that blended a premium package of monochromatic exterior trim and special equipment, complemented with GMC’s latest technologies.
To clarify, the package required the ‘regular’ All Terrain package and included all of its contents, plus added the following:
- 18-inch Black Painted Aluminum wheels (RT4)
- LT 275/65R18 MT blackwall Goodyear Wrangler tires (QF2)
- DuraTrac, Black Bed Mounted Sport Bar
- 4-inch black round assist steps
- Power Adjustable Heated Power Fold Trailering Mirror with integrated Turn Signal, Cargo Lamp, and Amber Clearance Lamp
- Black Mirror Caps
- Black “B” Pillar Vinyl Wrap
- Black Front-Bumper Skid Plate
Model Year(s) | 2017 – 2019 | |
Engine(s) | 5.3L V8, 6.0L V8, 6.6L V8 Diesel | |
Transmission(s) | 6-Speed Auto, 8-Speed Auto | |
Drive Wheels | Four-Wheel-Drive | |
Availability | U.S.A., Canada, Mexico, Middle East |
- See complete GMC Sierra HD All Terrain information and details.
- See complete GMC Sierra HD AT4 information and details.
Discussion
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