The GMC Sierra is now in the 5th model of the third generation and only subtle changes have been made for the 2018 model year. The trim lineup is as follows; Sierra, Elevation Edition (Sierra), SLE, Elevation Edition (SLE), SLT, All Terrain, Denali.
Two new colors are added and two old colors are deleted. Crimson red and Pepperdust metallic are no longer. They are replaced with Deep Mahogany Metallic and Red Quartz Tintcoat. There are no photos available yet from GMC press on those colors in the 1500 Sierra, however, a similar mahogany color was used back in 2016. It looks to be a brownish color with a hint of purple. Then new red color looks to be a lot brighter than the Crimson red.
The 2018 GMC Sierra will now feature a tire pressure ‘Tire Fill Alert’ system which gives an audio and visual alert outside the truck when inflating the tire, so you know when it’s at the correct pressure. The base model will now get a 7″ color touchscreen radio and all trucks will back up cameras. 4 speaker systems will now be upgraded to a 6 speaker system. Brembo performance brake kit now available as an option.
The GMC Sierra HD has the highest horsepower rating it in its class for the diesel. The Duramax 6.6L turbocharged V-8 puts out 445hp and 910 lb-ft torque. The model lineup in the heavy duty Siera is as follows; Sierra, SLE, SLT and Denali. All Terrain package is available and the All Terrain X package can be added to an SLT.
Colors no longer available are Crimson Red Tintcoat, Deep Garnet Metallic, and Pepperdust Metallic. Colors added to the heavy duty lineup are the same as the half-tons, Deep Mahogany and Red Quartz Tintcoat. The same as the 1500, back up cameras will also be standard throughout the range. 4 speaker systems upgraded to 6 speakers and the 4.2″ screen replaced with 7″ color touchscreen. The ‘Tire Fill Alert’ will be added to single rear wheel heavy duty trucks only.
The Sierra truck with the most new features added is the All Terrain HD which gets;
All Terrain HD Package
- Spray on bed liner
- All terrain tires (265/70R18)
- Front and rear park assist
- Z71 Off-Road suspension package
- Underbody shield
- All-terrain grille insert with chrome surround
- Heated steering wheel
- Body-color front and rear bumpers
- Sill plates
- Floor liner
- Black painted mirror caps
- Body-color door handles and side moldings
- Black belt moldings
- Black skid plate
- 4″ round side steps
For more information on GMC pickup trucks feel free to contact us or check out the GMC dealership in Riverton, Wyoming.
Lauren has been working in the automotive industry both in the U.K and in the U.S. for over 10 years. A car geek, photographer, big game chaser and bagpipe player, powered by coffee. Send your questions to: