2018/2019 sensing trailer hooked up and wiring - TerrainForum.net: GMC Terrain Forum
 
LinkBack Thread Tools
post #1 of 9 (permalink) Old 09-12-2018, 12:12 AM Thread Starter
Jr. Member
 
Join Date: Jun 2018
Posts: 17
2018/2019 sensing trailer hooked up and wiring

How does stabilitrak and abs systems sense a trailer is hooked up? On '18/19 nox LS without tow package, going to wire in a 7 pin RV connector and brake controller. I am planning on using some isolation relays but don't want to interfere with any stability function when towing. Does the car look for a load on a specific trailer wire? Being a low end trim, no backup sensors to worry about.

Also, I would really like to get a wiring diagram, but helm is not selling manuals until July2019! I hate to guess on wire colors and function. I found the flat 6 pin trailer connector hiding in the bumper, and see the oem hitch harness provides 4 pin connector. I have seen discussed here that the blue wire is for brakes, but what is the remaining wire? My RV has backup lights so was hoping that was the Extra wire. Then just need 30Amps hot lead to charge rv battery and another relay to isolate.

Thanks
Yuiop is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 09-12-2018, 07:42 PM
Full Member
 
Dagorlad's Avatar
 
Join Date: Dec 2017
Posts: 160
Garage
I believe it is by measuring the load of the trailer lights. I recall seeing more than one item on my scan tool that was labeled something like "trailer detected".

2010 Equinox LT V6 AWD
Dagorlad is offline  
post #3 of 9 (permalink) Old 10-05-2018, 03:02 PM Thread Starter
Jr. Member
 
Join Date: Jun 2018
Posts: 17
Does anyone have a schematic of the wiring related to the hidden trailer connector at the bumper for 2018/2019 without factory tow? Like to know where each wire in that connector goes.
Thanks.
Yuiop is offline  
Sponsored Links
Advertisement
 
post #4 of 9 (permalink) Old 02-24-2019, 11:08 AM Thread Starter
Jr. Member
 
Join Date: Jun 2018
Posts: 17
Finally getting my 2019 equinox next week. Helm has not yet published the service manuals for even the 2018 model. Very annoying.

Anyone know what all 6 wires of the flat connector hidden above the bumper on all models without tow package do?? I am having factor hitch installed, but that only uses 4 of the wires on that connector. I need to switch to a 7 pin RV tow connector and add brake controller.

Anyone have the wiring diagram for the rear fuse box area? Even for 2018.

Thanks
Yuiop is offline  
post #5 of 9 (permalink) Old 02-24-2019, 11:49 AM
Theta Freak
 
rednox301's Avatar
 
Join Date: Nov 2014
Posts: 1,616
Quote:
Originally Posted by Yuiop View Post
Finally getting my 2019 equinox next week. Helm has not yet published the service manuals for even the 2018 model. Very annoying.

Anyone know what all 6 wires of the flat connector hidden above the bumper on all models without tow package do?? I am having factor hitch installed, but that only uses 4 of the wires on that connector. I need to switch to a 7 pin RV tow connector and add brake controller.

Anyone have the wiring diagram for the rear fuse box area? Even for 2018.

Thanks
GM doesn't release the info to Helm Inc. for at least a year, always been that way.
You could do the install and have the dealer or a U-Haul do the wiring for you.
I would trust the dealer before a towing shop.

You might contact "etrailer.com" to see if they can help.
Be sure to watch the second video.
See link below.

https://www.etrailer.com/Custom-Fit-...SABEgIkmvD_BwE

2014 Equinox LTZ FWD 3.6L. V-6 (LFX)
GM6T70 Transmission-Gen II(M7W)
Crystal Red Tintcoat-Brownstone Leather-(FE2) Suspension-18" Wheels
Build Date: Nov. 04, 2013-Delivery Date: Nov. 25, 2013

Last edited by rednox301; 02-24-2019 at 12:15 PM.
rednox301 is offline  
post #6 of 9 (permalink) Old 02-24-2019, 11:50 AM
Sr. Member
 
garbec01's Avatar
 
Join Date: Jan 2011
Location: Cambridge IL - USA
Posts: 268
Garage
Quote:
Originally Posted by Yuiop View Post
Finally getting my 2019 equinox next week. Helm has not yet published the service manuals for even the 2018 model. Very annoying.

Anyone know what all 6 wires of the flat connector hidden above the bumper on all models without tow package do?? I am having factor hitch installed, but that only uses 4 of the wires on that connector. I need to switch to a 7 pin RV tow connector and add brake controller.

Anyone have the wiring diagram for the rear fuse box area? Even for 2018.

Thanks
I don't have access to the vehicle wiring diagram, but a VOM meter and this diagram of trailer wiring may assist in getting it done.

The link rednox301 provided above may help the most.

https://www.truckspring.com/trailer-...n-diagram.aspx
The link above may assist also.

.

2019 Chevy Equinox; 2.0 - LT - FWD - Silver Ice/Redline - Purchased 10/20/2018; Mills Chevrolet, Davenport IA
2016 Chevy Equinox; 3.6 - LTZ-AWD - Black/Black - Purchased 7/7/2016; Mills Chevrolet, Davenport IA
2017 Chevy Malibu; 1.5 - LT - Pepperdust - Purchased 8/2017; Green Chevrolet, East Moline, IL
2009 Chevy Silverado; 5.3 -LT - 4WD - Ext. Cab - Granite Met. - Purchased 02/2009; Green Chevrolet, East Moline IL

Last edited by garbec01; 02-24-2019 at 12:00 PM.
garbec01 is offline  
post #7 of 9 (permalink) Old 02-24-2019, 06:58 PM
Full Member
 
Join Date: Jun 2017
Location: Lyndon, Vermont
Posts: 156
Quote:
Originally Posted by Yuiop View Post
Finally getting my 2019 equinox next week. Helm has not yet published the service manuals for even the 2018 model. Very annoying.

Anyone know what all 6 wires of the flat connector hidden above the bumper on all models without tow package do?? I am having factor hitch installed, but that only uses 4 of the wires on that connector. I need to switch to a 7 pin RV tow connector and add brake controller.

Anyone have the wiring diagram for the rear fuse box area? Even for 2018.

Thanks
I used the factory receiver and installed it myself using the accessory, 4 wire harness. I didn't notice that the vehicle harness had 6 wires so can't help you there. However the receiver is actually designed for the twist lock 7 pin receptacle used on the GM trucks and the 2.0L Equinoxs. The harness supplied with the hitch had a Mickey-mouse adapter for the flat four end. I only needed the ground, tail lights and left and right directional lights for use with a small trailer. I cut the flat four off the supplied harness and installed the wires into the 7 pin connector in the proper DOT positions because I think it looked neater and I have 7 pin plugs on both my trailers.
Howard
HCO41 is offline  
post #8 of 9 (permalink) Old 02-25-2019, 09:56 AM
Full Member
 
Join Date: Dec 2018
Location: Dayton, Ohio
Posts: 134
On the models with Towing package there is a tow mode. So without that the car probably has no idea you have a trailer hooked up. Abs and stabilitrack will work fine but may not help trailer sway. But ist possible stabililtrack probably can compensate some.

If you load your trailer correctly trailer sway should be little to no issue.
kowal_joe is offline  
post #9 of 9 (permalink) Old 03-13-2019, 06:54 PM
Sr. Member
 
Join Date: Jan 2013
Location: Pittsburgh,PA
Posts: 281
my wifes acadia has a factory tow package........from the factory it has the 7 pin connector.......other end of that is supposed to be tucked up under the dash if you are planning to use a brake controller.......it has the select knob on the console to activate the tow mode...........things I have noticed in tow mode. .1 shift points are modified winds out longer in every gear 2 when you touch the turn signal it blinks 6 times instead of the normal 3....3 it has the side detection radar for the blind spot and it extends those a little farther 4 it turns on the 4 wheel drive 5 the axle ratio is 3.87 and it comes out of the hole like you wouldn't believe 6 never had a issue with the abs or stabiltrak 7 towed a empty trailer for 200 miles and the returned with 700 pounds in the trailer rolling along at 70mph 8 as kowal joe said above its how you load the trailer.........keep tongue weight at 10 to 15% (of total trailer and load weight )
mgmsequinox is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TerrainForum.net: GMC Terrain Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome