2002 GMC Sonoma No heat

2002 GMC SONOMA
186,000 MILES • 6 CYL • 2WD • AUTOMATIC
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CHAZBAYER
  • MEMBER
  • 1 POST
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 getting roughly 25% heat.
Dec 6, 2009 at 1:31 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Tell him to go behind the dash and investigate all doors/flaps vacuum aparatus/actuators and check the HVAC control module-this one can be costly
Dec 6, 2009 at 1:40 PM
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