Auxiliary HVAC Control Assembly

Utility vehicles with automatic front and auxiliary HVAC systems will communicate back and forth over Keyboard Data Display (KDD) circuits. The HVAC control module will send out a HZ signal over the driver HVAC control assembly clock signal circuit to the rear auxiliary HVAC control assembly & return a HZ signal on the driver HVAC control assembly signal circuit. Utilities vehicles with the sunroof option will have the rear auxiliary HVAC control assembly removed. A manually operated auxiliary system will be installed instead. Yukon and Tahoe models will have an adapter harness installed in line due to vehicle length.