Will the Thule Motion XT Rooftop Cargo Box Fit on a 2018 GMC Terrain

Question:

Will the Thule Motion XT XL fit a 2018 GMC Terrain with factory crossbars, and clear the hatch and antenna?

asked by: Kalyn

Expert Reply:

In order to determine whether or not the Thule Motion XT Rooftop Cargo Box # TH629806 will fit on your 2018 GMC Terrain you will need to take 2 measurements; you'll first need to measure to make sure your crossbars aren't more than 3-1/2" wide and 1-11/16" tall. In order to determine if this cargo box will clear the hatch and antenna on your Terrain, you will need to have a measurement of at least 51-1/4" from the center of the front cross bar to the edge of the rear hatch where it meets the roof. As long as your antenna sits below the cross bars it will not interfere.

I've attached a picture that show the two measurements you'll need to take to determine whether or not it will fit. According to Thule, the Motion XT XL # TH629806 is a confirmed fit on your vehicle, but we always recommend measuring when antennas are involved in the equation since they often do not take this into account.

expert reply by: Erik B