gooseneck wiring harness - Chevy and GMC Duramax Diesel Forum
 
LinkBack Thread Tools Display Modes
post #1 of 8 (permalink) Old 10-18-2019, 07:43 PM Thread Starter
 
Join Date: Oct 2019
Posts: 2
gooseneck wiring harness

I just purchased a 2020 2500HD and had the gooseneck hitch installed. But it didn't come with the wiring harness (standard on the 3500) or the 7 pin/4 Pin plug in. Chevy kindly predrilled the hole though, so I am limited to getting the exact size to ensure it covers the entire hole. Problem is, the parts department cant figure out which part to order. They keep wanting to give me the one listed online which is too small to cover the entire hole. Anyone find an aftermarket one that works?
kevinktwo is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old 10-18-2019, 08:56 PM
DuramaxForum Enthusiast
 
rparlee's Avatar
 
Join Date: Jan 2013
Location: Vancouver, WA
Posts: 4,780
Garage
Have you looked on etrailer.com? Hopkins comes to mind.


Sent from my iPhone using Tapatalk

Ryan

2006 GMC Sierra 3500 SLT CCLB 4x4

Mods: EGR block, EFI LIVE by Rob (DSP5), Edge Insight CTS2 w/ backup cam and EGT probe, Pacer 07.5+ smoked cab lights, M-A Pump rub fix, TransGo Jr w/ Mike L springs, Russell stainless brake lines.

My Build Thread
rparlee is offline  
post #3 of 8 (permalink) Old 10-19-2019, 07:49 AM
Duramax Lifetime Supporter
 
407driver's Avatar
 
Join Date: Oct 2016
Location: Maurice, LA
Posts: 4,088
What is the diameter of the hole you have to cover?

2008 Silverado 2500HD CCSB LTZ Diesel
FASS 95 Lift Pump (with Baldwin filters), Edge Insight CTS Monitor on a Windshield Mount, Nicktane Fuel Filter Adapter w/ CAT 306-9199 UHE tertiary fuel filter, Bilstein 5100 Stock Height, Bushwacker Bed Rail Caps, AMP Research Bedstep, Fumoto oil drain valve, Dorman PS Oil cooler, Pioneer AVIC 7200NEX GPS/Stereo, Air Lift LoadLifter 5000 Air Bags.
407driver is online now  
Sponsored Links
Advertisement
 
post #4 of 8 (permalink) Old 10-19-2019, 09:02 AM
Senior Member
 
powerhaulic's Avatar
 
Join Date: Oct 2017
Location: Adirondacks, NY
Posts: 415
Garage
The hole is exactly the same as the oblong hole in the bumper.
I am sure of this because I swapped the camera/7pin plug from the bumper to the bed and installed the 7pin/4pin plug in the bumper.

2020 Sierra AT4 3500 Duramax
2018 Denali 2500HD L5P Derringer equipped
2018 Montana 3811MS Legacy 16400#2900pin
powerhaulic is offline  
post #5 of 8 (permalink) Old 10-19-2019, 11:19 AM
DuramaxForum Veteran
 
Join Date: Aug 2009
Location: Berryton, KS
Posts: 1,358
Use your vin# to do a parts look up on a GM parts website. Should give you the correct part number for your particular vin#.

Ron Nielson
2008 Silverado LT, CCLB, Edge Insight CTS
2009 Arctic Fox 29-5T, Silver Fox Edition, Onan 3600 LPG generator
Ron Nielson is offline  
post #6 of 8 (permalink) Old 10-19-2019, 11:45 AM
DuramaxForum Enthusiast
 
rparlee's Avatar
 
Join Date: Jan 2013
Location: Vancouver, WA
Posts: 4,780
Garage
So would this work?
https://www.etrailer.com/Custom-Fit-...ID=20061172671


Sent from my iPhone using Tapatalk

Ryan

2006 GMC Sierra 3500 SLT CCLB 4x4

Mods: EGR block, EFI LIVE by Rob (DSP5), Edge Insight CTS2 w/ backup cam and EGT probe, Pacer 07.5+ smoked cab lights, M-A Pump rub fix, TransGo Jr w/ Mike L springs, Russell stainless brake lines.

My Build Thread
rparlee is offline  
post #7 of 8 (permalink) Old 10-19-2019, 09:08 PM Thread Starter
 
Join Date: Oct 2019
Posts: 2
Thanks all, appreciate the suggestions. Seems this may have been more an issue with my specific dealer parts guys, and the Chevy/GM website isn't the most user friendly for this particular part. I ended up asking them to simply order the one on the 3500. Of course its back-ordered but at least its coming. I matched that one up with my cover and its the same. The parts guide says it needs just the single end wiring harness but I am pretty sure it needs the one with one end for the receptacle and two on the other end to plug into the existing receptacle and the other to the source. I just hope its long enough.
kevinktwo is offline  
post #8 of 8 (permalink) Old 10-20-2019, 03:31 AM
Duramax Lifetime Supporter
 
407driver's Avatar
 
Join Date: Oct 2016
Location: Maurice, LA
Posts: 4,088
I have a Curt 56070 extension. It is used but works fine, I took it off my previous truck.

It is 7' long. For $10 to pay for shipping I will send it to you.

Shoot me a PM if interested.

2008 Silverado 2500HD CCSB LTZ Diesel
FASS 95 Lift Pump (with Baldwin filters), Edge Insight CTS Monitor on a Windshield Mount, Nicktane Fuel Filter Adapter w/ CAT 306-9199 UHE tertiary fuel filter, Bilstein 5100 Stock Height, Bushwacker Bed Rail Caps, AMP Research Bedstep, Fumoto oil drain valve, Dorman PS Oil cooler, Pioneer AVIC 7200NEX GPS/Stereo, Air Lift LoadLifter 5000 Air Bags.
407driver is online now  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevy and GMC Duramax Diesel 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










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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