GMC HEATER NOT WORKING

What Schould I Do Next? Updated 11/18/09 I Did Flush Out The Heater Core And That Did It. Thank You So Much. I Fix The Sr. Cars Around...

Heater System Seems To Be Blowing Out Cold Air. I Replaced The Thermostat And It Is Still Blowing Out Cold Air. Can I Myself An Unlicensed...

I Have A 1997 Gms Sonoma 4x4 V6 4.3l. My Heat Sucks! This Year It Is Not Geting Hot At All. I Have A New Rad, New Hoses, New T-stat, New...

Heater Works On Defrost And Bi Level Does Not Work On Floor Goes To Defrost Even In Heat Position.

Question For A 1988 Chevrolet 1/2 Pickup W/ Ac. 25 Amp Heater Fuse Blew Today While Selecting Blower From High Speed To Low Speed...

I Have A 93 Grand Am 3.3l.I Have A Bit Of Heat For About A Minute Or So After I Turn On The Fan.I Was Told That The Heater Core May Be...

How Hard Is It To Repair.

Hoses Are Hot, Radiator Is Fine Looking For Sensor That Contols The Opening & Closing Of The Hot Water

Heater Will Not Get Hot. One Of The Heater Hoses Is Hot, But The Other One Is Cold. What Seems To Be My Problem?

The Blend Air Door Appears To Be Broken. I Removed The Actuator, Which Works And Is Not Damaged, But The Part That It Connects To Is...