Email questions can be sent here:
Due to labor availability constraints and to streamline efficiency, Email is our primary means of communication. We check and respond to email multiple times daily. If you have checked all of the website tabs including scrolling down and your question is not answered in our Q&A formats, in the Statement of Work, or in one of the 50 or so videos on the site a telephone appointment can be set up via email request.
You must detail the reason for the call in your email and we can set a time/date for a conversation. Questions that are already answered on the website will be directed back to the site.
Normal Business Hours are 8AM-6PM Mon-Thurs and 8AM-2PM on Friday. (Eastern Time Zone)
We are closed Saturdays, Sundays and Holidays.
Please remove everything that can be disconnected before shipping any harness for conversion.
ECMs, TCM's, Modules, Sensors, Brackets, Pedals and extra sections like the Duramax Accelerator Pedal Jumper or the Transfer Case Jumpers should not be sent. Battery cables should also be removed if you plan to reuse. Any extra items will be cut off and disposed. We do not retain, stock or sell replacements of any of these items. If you think you might want it pull it off and keep it on your end. Finally be sure to write your name, EMAIL ADDRESS and telephone number on a piece of paper and place it inside the box so we can EMAIL you after your harness has been tagged, cleaned, peeled and inspected. We will schedule your completion date and Invoice via EMAIL 3-4 business days after your harness arrives. Payment of our invoice is simple and easy with any credit card or a Paypal account when the work order is completed.
Thanks, Ken
What to Send for an Upper Engine Harness refresh?
Duramax Harness Shipping Instructions:
How to ship and what happens next?
What to Send for a Duramax ECM/TCM harness conversion?
Duramax Harness shipping info:
We regret to do this but we have no choice because the Tariff costs are unsustainable:
All International shipments are not being accepted at this time due to Tariff collection issues on both inbound and outbound packages. If you ship a package after 11/13/2025 from another Country it will be refused and it will go back to the distribution center. Once we have proof the tariff has been paid we will accept the package.
Packages sent to us within the United States are unaffected.
To:
Standaloneharness.com
7777 N. WICKHAM RD.
SUITE # 12-122
Melbourne, FL. 32940 US