× 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: Great air flow on cold setting/no air flow on high heat
Posted to HVAC Forum on 11/2/2013 2 Replies

[...trimmed text...]

Did you reprogram the control head to the correct software version?

GM uses the same control head (your words) for more than 1 year model.

Each control head REQUIRES that the proper calibration b... Login to read more.

2 Replies Received (View Replies)