jQuery not supported.

Trailer Plug Problem on Truck

No voltage on one turn signal

Trailer Plug Problem on Truck

Postby bburch [OP] » Dec 30 2011, 8:40pm

I have a factory installed 7-pin plug which I converted to 4 pole flat. I don't use it as much as I used to, but I've never had any trouble until now. I installed an aftermarket 5 function light bar (under the tailgate) and I can't get voltage to the factory plug for the left brake/turn wire. The problem isn't in the plug itself, but in the wire coming to the plug. Everything is intact and no damage to the harness. I decided to just splice into the brake light itself, but I can't get the turn and brake lights to work, it's either turn signal or brake lights.

Any ideas?
Original Poster
Posts: 1
Topics: 1
Blogs: 0
Joined: Dec 30 2011, 8:33pm
Years of membership: 2 years of membership2 years of membership
Location: Batesville, AR
Year: 2006
Make/Model: GMC Sierra
Extra Info: Z71 Extended Cab
Group Membership:
Registered users
Related Topics  7 way trailer plug questions   2014 trailer plug on a 2013 Sierra   Curt T-connector and 7 pin trailer plug   Unique Glow Plug problem   rear axle fill plug problem   Trailer Harness Problem   Trailer light problem on my 2012.    Wall Plug for Truck   Will my truck tow this trailer?   Lifted truck 5th wheel trailer   Setting up new truck to pull travel trailer   Time for new plug . But can't find the iridium plug   New truck...possible problem   "That is way too much trailer for that truck." 
Towing/Trailers Sponsor
Advertise Here

Re: Trailer Plug Problem on Truck

Postby ASTE25 » Dec 31 2011, 12:46am

Check the fuses for the trailer lights in the fuse box under the hood.
2013 Blue Granite Metalic Silverado 2500HD Z71 4X4 extended cab regular bed
6.6L Duramax/Allison 6 speed
Line-X premium over the rail (black)
User avatar
Shifting into Sixth Gear! [L3]
Shifting into Sixth Gear! [L3]
Posts: 10845
Topics: 19
Images: 21
Blogs: 0
Joined: Jan 03 2011, 6:37am
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: New Market, Alabama
Year: 2013
Make/Model: Chevrolet Silverado
Extra Info: 2500HD Z-71
Group Membership:
Automotive Technicians
Member Extraordinaire
Registered users

Re: Trailer Plug Problem on Truck

Postby evensteven3 » Jan 03 2012, 10:15pm

the plug at the hitch is very notorious for corrosion and burn-up take it apart and clean it or replace as nessicary depending on how much you use it

not just the part you see but the connections into the 7 way
Combustion on 1 piston [L2]
Combustion on 1 piston [L2]
Posts: 147
Topics: 4
Images: 39
Blogs: 2
Joined: Dec 22 2011, 10:24pm
Years of membership: 2 years of membership2 years of membership
Location: Owensboro Ky
Year: 2002
Make/Model: Chevrolet Silverado
Extra Info: Z71 5.3 ls1 extended
Group Membership:
Automotive Technicians
Registered users

Re: Trailer Plug Problem on Truck

Postby Xceler8 » Jan 03 2012, 10:26pm

on that note trailer wiring and the wiring going to it is notoriously a pain lol
Firing on 8 cylinders [L1]
Firing on 8 cylinders [L1]
Posts: 97
Topics: 7
Images: 5
Blogs: 0
Joined: Dec 31 2011, 6:34pm
Years of membership: 2 years of membership2 years of membership
Location: Alberta Canada
Year: 2010
Make/Model: Chevrolet Silverado
Variant: VHO/Vortec Max
Extra Info: 1500 6.2L 4x4 Crew
Group Membership:
Registered users

Return to Towing/Trailers


  • Similar topics
    Last post

Common search terms

trailer problem lights truck plug everything turn clean part replace brake check work light installed used factory

It is currently Jul 23 2014, 12:50am

  • Sponsor
Login  •  Register
SHOP TALK (Live Chat)
Towing/Trailers Forum
Towing/TrailersDiscuss towing and trailers and plows, or overdrive and hitch towing capacity (gvw) and tongue weight for heavy loads. This is the place for tow hitches, receivers, and trailer wiring as well as snow plowing.
To create a new topic in Towing/Trailers, click this button:
Previous topic Next topic
Sitewide News Sitemaps & Feeds

Who is online

Users browsing this forum: No registered users and 7 guests

carid home silverado truck parts at carid replacement side view mirrors store custom truck parts store putco chrome accessories and trim store