Question about 2003 GMC Sierra 2500HD
The controller should have wiring diagrams with it. Also try http://www.etrailer.com/faq-wiring.aspx. The truck should have a harness that plugs into the factory harness under the dash. The harness paperwork will describe where it plugs into and what wires go where along with fuse location. If you don't hav the harness, you can get it from the dealer or the site listed above.
Posted on Feb 11, 2010
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Nov 15, 2014 | Cars & Trucks
Mar 28, 2014 | 2004 GMC Yukon XL
Oct 13, 2012 | 2006 Ford F-150
Mar 04, 2011 | 1996 Ford Econoline
Dec 27, 2009 | 2004 Chevrolet Silverado
Apr 23, 2009 | 2000 Ford F350 Super Duty Super Cab
Mar 30, 2009 | Dodge Ram Pickup 1500 Cars & Trucks
Mar 15, 2009 | 2007 Chevrolet Silverado 1500 2WD
Nov 29, 2008 | 1991 Ford F150
583 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: