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Installing Trailer Hitch on 2012 GMC Terrain with Hex Bolts Not Fitting  

Updated 09/25/2017 | Published 09/23/2017

Question:

My hex bolts are not fitting on the side part of to attach the hitch. I have a 2012 Terrain. Is there any other way to get them to fit or a different size bolt to use? 13591

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Expert Reply:

For your 2012 GMC Terrain, The Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" # 13591 the M12-1.75 x 40mm hex bolts are confirmed to fit the weld nuts of your vehicle frame. If you are having a difficult time getting the bolts to thread, then I recommend gently using a wire brush to clean the threads of the weld nuts. Be careful not to use too much force as you could damage the threads, but a wire brush will remove any dirt or debris that is keeping the bolts from properly installing.

A different size bolt will not fit the weld nuts and may also change the strength of the trailer hitch receiver.

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Jason S
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