2004 GMC Jimmy 6 cyl Four Wheel Drive Automatic
AC WORKS BUT WHEN BUT ON HEATER DOES NOT WORK COOL COMES OUT
have the same problem?
Sunday, October 3rd, 2010 AT 9:16 PM
Check the heater actuators they may be stuck it will be similar to the pictures i'm sending. they are listed as #1 & 2 they move to switch the air in theheater box. They may have vacuum hoses going to them as the picture i'm sending is electric...