2018 Terrain - Trailer Wiring - Page 3 - TerrainForum.net: GMC Terrain Forum
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post #21 of 26 (permalink) Old 06-29-2019, 09:12 AM
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Location: nw ohio
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You are correct! Those two screws were not on the instructions.. Also, anyone who has the Diesel version, your are supposed to remove the DEF tank to get the trailer hitch bolts put through the frame. With some help from a friend you can do this without removing the tank. Just have someone pull the tank to the side a little and you can get the torque wrench in there to put in ALL THREE BOLT on the left side! If you noticed, the towing capacities of the diesel are less than the other two engine models. The reason is not because of the power ( the diesel pulls like a mountain goat), it is because you supposedly can't install all 6 mounting bolts (3 on each side)b, but only 5. But I found a away to do it. The problem lies with the position of the DEF tank. It sit against the underside of the frame where the mounting bolts rest. What I did was shim down the DEF tank with (I think 5 - 1/4") plastic spacers to drop the tank down just enough for the DEF tank not to rub on the heads of the mounting bolts. 5 small bolts support the DEF tank, one spacer for each support bolt did the trick. Poor design on GM's part. Works great.[/QUOTE]

did you have to cut your bumper? and were you able to see that nothing would rub when doing that? it seems gmc has discontinued the hitches. ordered one from a gmc parts house and they cancelled the order 2 days later so i went to ebay. cost me $30 more total between that and the cutout fascia piece.

SO IF YOU WANT AN OEM, ONE YOU BETTER BUY EM UP!!

2018 Terrain Diesel SLE
2012 Acadia SLE
too many formers...2014 Passat/2000 Jeep Cherokee Sport 4dr, 2.5 Rubicon lift and all them goodies/1993 Mazda 626/2000 Ford ZX2 tuners, pulleys, cai, lowered, ricer style lol
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post #22 of 26 (permalink) Old 07-05-2019, 01:57 PM
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Are there any videos on how to remove the fascia? I do not want to break it.
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post #23 of 26 (permalink) Old 07-05-2019, 04:12 PM
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That'd help me too lol...but I havent done it yet. Just got the bezel for the hitch hole today.. I wonder if only the diesel models were made without the hole precut..

2018 Terrain Diesel SLE
2012 Acadia SLE
too many formers...2014 Passat/2000 Jeep Cherokee Sport 4dr, 2.5 Rubicon lift and all them goodies/1993 Mazda 626/2000 Ford ZX2 tuners, pulleys, cai, lowered, ricer style lol
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post #24 of 26 (permalink) Old 07-08-2019, 04:30 PM
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I'm at the dealership now getting service. I'm prowling the lot and notice no 1.5l gas...no diesels here to check...have a cutout for a hitch. 2.0l all do have them.

Tells me the diesels are the same...not precut...

2018 Terrain Diesel SLE
2012 Acadia SLE
too many formers...2014 Passat/2000 Jeep Cherokee Sport 4dr, 2.5 Rubicon lift and all them goodies/1993 Mazda 626/2000 Ford ZX2 tuners, pulleys, cai, lowered, ricer style lol

Last edited by Cwilson884; 07-08-2019 at 06:28 PM.
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post #25 of 26 (permalink) Old 08-08-2019, 12:23 AM
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Just ordered the hitch package and Bezel. Couple questions:

1. Did I order the correct hitch? I ordered PN 84239997 (hitch) along with Bezel PN 84300513 from a local dealer (from their parts web site).
When I log into my.gmc.com(to get the install instructions), the part that shows up for purchase is PN 84787686. What is the difference
Between the two?

2. A while back (from another thread) I was able to find the instructions on installing the hitch from my.gmc.com, but for some reason, canít
Seem to find them now. What am I missing?

Thanks for any help!

2019 SLT-AWD-2.0L-Quick Silver
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post #26 of 26 (permalink) Old 08-10-2019, 09:25 PM
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As an update- the dealer told me there is no difference between the two hitch PNís. So I am all set with that. I was also able to remove the rear bumper. A little nerve racking, but I got it done.

So my next question. I thought I needed the added Bezel to clean up the opening, but from the looks of it, I donít need it. My Terrain is a SLT 2.0, so it does come with a removable center cover. It looks like the right option, but I just want to make sure.

Any help would be appreciated!

2019 SLT-AWD-2.0L-Quick Silver
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