OEM Trailer Brake addition

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Tiki

Full Access Member
Joined
Jun 4, 2013
Posts
640
Reaction score
326

swathdiver

Full Access Member
Joined
May 18, 2017
Posts
21,276
Reaction score
30,208
Location
Treasure Coast, Florida
I can't speak for the wiring but you'll at least need the JL1 module programmed into the computer system.

You'll need access to an advanced scan tool that can program GM modules and a subscription to ACDelcoTDS for $40-57.
 

Tonyrodz

Resident Resident
Joined
Feb 16, 2012
Posts
33,169
Reaction score
51,366
Location
Central Jersey
I can't speak for the wiring but you'll at least need the JL1 module programmed into the computer system.

You'll need access to an advanced scan tool that can program GM modules and a subscription to ACDelcoTDS for $40-57.
Tech2?
 

Doubeleive

Wes
Supporting Member
Joined
Nov 7, 2017
Posts
30,500
Reaction score
47,890
Location
Stockton, Ca.
from what i have read for the nnbs anyway even if you get the oem switch, dash panel and harness it still wont work, takes a whole different vehicle wire harness and has to connect to the transmission and etc.. that information could be wrong it is just what i read after spending a bit of time looking into it.
 

Tahoe14

Full Access Member
Joined
Jun 10, 2014
Posts
2,068
Reaction score
1,345
Location
Central Fl
I think this has been discussed some where before, maybe here or the truck forum and I think there was a whole lot more involved than just putting on two parts. I think the end result was an aftermarket controller.
 

MidnightRider

Member
Joined
Mar 22, 2018
Posts
62
Reaction score
27
Location
Gainesville GA
My ‘18 Tahoe came with what I assume is a harness for an aftermarket controller in the glove box. Of course it is not hooked to anything in there. Plugs under the dash somewhere.
 

dbbd1

Full Access Member
Joined
May 12, 2017
Posts
924
Reaction score
357
I think that you'll still want the jumper, for your aftermarket controller.
 
OP
OP
Tiki

Tiki

Full Access Member
Joined
Jun 4, 2013
Posts
640
Reaction score
326
OEM or bust! I'll scour the truck forums.
 
OP
OP
Tiki

Tiki

Full Access Member
Joined
Jun 4, 2013
Posts
640
Reaction score
326
The answer, per interwebz, is no. Adding the OEM trailer brake is not going to happen. Wamp wamp.
 

swathdiver

Full Access Member
Joined
May 18, 2017
Posts
21,276
Reaction score
30,208
Location
Treasure Coast, Florida
My ‘18 Tahoe came with what I assume is a harness for an aftermarket controller in the glove box. Of course it is not hooked to anything in there. Plugs under the dash somewhere.

The answer, per interwebz, is no. Adding the OEM trailer brake is not going to happen. Wamp wamp.

It's quite involved and even calls for different brake pads. I would say it could be done but at what expense?
 

Doubeleive

Wes
Supporting Member
Joined
Nov 7, 2017
Posts
30,500
Reaction score
47,890
Location
Stockton, Ca.
ya the aftermarket connectors are there on any with a tow package, the 2 power wires are tucked in the engine compartment one is on the drivers side of the fuse box down in between the fender and fuse box, the other taped down on the main harness and connect to the 2 external power studs on the front of the fuse box I hooked mine up and then taped into the power at the trailer connector for some backup led flashers, the rest of the connection is tucked under the dash I think near the steering column. If you download the gm upfitter guide it tells you where everything is.
 

dmad1

Member
Joined
Jan 2, 2018
Posts
86
Reaction score
29
ya the aftermarket connectors are there on any with a tow package, the 2 power wires are tucked in the engine compartment one is on the drivers side of the fuse box down in between the fender and fuse box, the other taped down on the main harness and connect to the 2 external power studs on the front of the fuse box I hooked mine up and then taped into the power at the trailer connector for some backup led flashers, the rest of the connection is tucked under the dash I think near the steering column. If you download the gm upfitter guide it tells you where everything is.
Where do I get the "gm upfitter guide" ?
 

SSpinball

Full Access Member
Joined
Oct 23, 2017
Posts
106
Reaction score
47
No. you need everything, lots hardware and software,
including harness, master cylinder, and booster.
not economically doable.
 

Forum statistics

Threads
137,687
Posts
1,989,619
Members
102,689
Latest member
Woned2004
Back
Top