GMC Sonoma Heater Not Working

I Would Like To Know How To Fix The Problem With My 2004 G.m.c. Sonoma. 2 Months Ago, It Started To Blow Cold Air, I Checked The Anti Freeze...

I Am Getting No Heat From My Sonoma. My Mechanic Has Done A Rad Flush And Replaced My Thermostat. Both Times It Worked For A Day. I Am...

Heater Blowing Cold Air. Replaced Radiator And Thermostat But Still Cold. What Could It Be?

How Hard Is It To Repair.

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...

I Replaced Heater Core Last Year.had Good Heat.this Year Has Lukewarm Heat.i Checked Heater Core Hoses One Is Hot The Other Is Warm.new...

I Swapped Out The Intake Manifold Because Of A Leak And Then The Thermostat Because Of No Heat Still Have No Heat And I See I Have A Bleeder...

I Only Get Heat When I Accelerate. You Have To Be Moving In Order To Get Warm Air. Eng Temp Stays Around 150 Degrees.

99 Gmc Sonoma 2.2ltr, No Heat, Not Overheating, Changed Thermostat, Old One Stuck Open, Back Together Still No Heat, Low Temp Readout......

Recently Replaced Head Gasket And Had Cylinder Head Machined Down (was Warped). Also Recently Replaced Radiator, Thermostat, Water Pump...