2008 CTS-4 (LY7) Lux, 2007 Premium Escalade, 1999 mazda Miata
Discussion Starter · #1 ·
While in independent heat or cool mode, the pass side "red" "heat up" button won't work. The only way to increase the heat on the passenger side is to de-activate the dual side feature and depress the off button so the drivers side control sets a higher temp for both sides. Just got this CTS so haven't been able to use the AC so don't know if passenger side has the same problem for moving from 60 temp up. Any ideas where to start? Switch? ECU for the HVAC?