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Open Roads Forum  >  Tow Vehicles

 > 2012 Yukon not seeing trailer connected

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gmcman

va

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Joined: 03/24/2003

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Posted: 08/03/22 07:14pm Link  |  Quote  |  Print  |  Notify Moderator

I have the factory integrated brake controller,(JL-1) this is the 1st time it's being used as I had to connect the red wires to the studs.

Fuses are good, I have 12V at the studs.

I have 12V at the brake control relay or module located above the spare tire.

The blue wire is good between the module/relay to the 7-pin, and both sides of the 7-pin are clean.

No stored codes.

Trailer works on another vehicle, and the Yukon still doesn't work on a 2nd trailer.

I have also tried a new GM gain switch and module, still no change.

No error messages, but the Yukon still won't recognize when a trailer is connected.

Curious if anyone has dealt with this.

blt2ski

Kirkland, Wa

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Posted: 08/03/22 09:22pm Link  |  Quote  |  Print  |  Notify Moderator

Has the Yukon pulled a trailer before? If not, my last 3-4 GMs have a big fuse that needs to be added to a fuse box in the engine compartment, drivers side.

Marty


92 Navistar dump truck, 7.3L 7 sp, 4.33 gears with a Detroit no spin
2014 Chevy 1500 Dual cab 4x4
92 Red-e-haul 12K equipment trailer

gmcman

va

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Posted: 08/03/22 09:32pm Link  |  Quote  |  Print  |  Notify Moderator

I don't know if the previous owner did, but it looked like none of the 12V leads were hooked up.

The two big fuses for the studs are in place, and I have 12V to each of the studs.

Michelle.S

Western NY till fall, then Sebring, FL

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Posted: 08/04/22 06:51am Link  |  Quote  |  Print  |  Notify Moderator

Are the brakes on the trailer electric drum or electric over hydraulic disc??


2018 Chevy 3500HD High Country Crew Cab DRW, D/A, 2016 Redwood 39MB, Dual AC, Fireplace, Sleep #Bed, Auto Sat Dish, Stack Washer/Dryer, Auto Level Sys, Disk Brakes, Onan Gen, 17.5" "H" tires, MORryde Pin & IS, Comfort Ride, Dual Awnings, Full Body Paint

gmcman

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Posted: 08/09/22 12:34am Link  |  Quote  |  Print  |  Notify Moderator

Brakes are electric drum.

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