04 trailblazer heat and ac works when it wants, very inconsistant

Have sex with it,.. it will feel better promis

1 Inspect Cooling System Mix Coolant level low or flow is restricted. 2 Inspect Belt Incorrectly routed, adjusted, tensioned, missing, or worn water pump belt(s04 trailblazer heat and ac works when it wants, ve - grey_line.gifrc="/uploads/images/grey_line.gif" alt="grey_line.gif" class="h_mi" /> 3 Inspect Oil Pan Gasket - Pe04 trailblazer heat and ac works when it wants, ve - grey_line.gifuptured, cracked or leaking radiator hose. 4 Inspect Radiator Cap W04 trailblazer heat and ac works when it wants, ve - grey_line.gifd radiator cap 6 Inspect Fan Blade Broken, missing, or defective04 trailblazer heat and ac works when it wants, ve - grey_line.gif. 8 Insp04 trailblazer heat and ac works when it wants, ve - grey_line.gifump Damaged, worn or leaking water pump. 10 Inspect Cooling Fan Control Faulty cooling fan control or circuit. 04 trailblazer heat and ac works when it wants, ve - grey_line.gifuploads/images/grey_line.gif" alt="grey_line.gif" class="h_mi" /> 11 Inspec04 trailblazer heat and ac works when it wants, ve - grey_line.gifan Switch - Radiator Faulty radiator cooling fan switch or circuit. 12 Inspect Engine Temperature Sensor Faulty engine te04 trailblazer heat and ac works when it wants, ve - grey_line.gifsor or circuit. 13 Inspect Temperature Switch Damaged or faulty temperature switch or temperature switch circuit. 14 Inspect Fan Clutch Worn, loose or faulty fan clutch. 15 Inspect Ported Vacuum Switch Damaged, leaking, or faulty ported vacuum switch. 16 Inspect Radiator Obstructed radiator core or radiator cooling fins. 17 Inspect Head Gasket - Performance Head gasket leaking coolant into cylinders

Replace the control wether it is namual or digital, this is the only thing that will cause it to act abnormal.