× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: 05 silverado can't program ecm error codeE4399
Posted to Technical Discussion Forum on 2/26/2024

When are you getting the error code? During the connect or after programming?

If its after programming then its probably from a used module. In this case you will may need to get a blank module from A/C Delco or maybe Cardone.

AC Delco TDS tech support wil... Login to read more.