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How to Pick Out Correct Ball Mount and 5-way Adapter for a 2015 GMC Acadia with Tow Package


I just leased the 2015 acadia SLT with the towing package. It comes equipped with a receiver and a plug. I just purchased a chaparral 19.5 H20 with a karavan trailer one axle. The dealer said the trailer wire has a flat 5 on it. Can you tell me exactly which hitch etc and wire adapter to purchase in order to be able to tow the boat. Thank you!


Expert Reply:

Since your 2015 GMC Acadia came with the factory tow package that means it has a 2 inch hitch installed already with a 7-way trailer wiring harness. Sounds like you are looking for the correct ball mount and wiring adapter to convert the 7-way to a 5-way.

You will want to pick out a ball mount with the correct rise/drop to allow your trailer to be towed as level as possible. You might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop. It also includes a 1-7/8 inch ball, 2 inch ball, hitch pin with clip, and a storage bag.

If the ball mount kit does not have the right rise or drop to tow the trailer level, use the link I have included that explains how to measure to choose a ball mount to tow the trailer level.

All you would need for a wiring adapter would be the Adapter 7 Pole to 5 Pole Flat # A75TB.

expert reply by:
Jameson C

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