2003 Chevy Blazer No Heat

2003 CHEVROLET BLAZER
96,000 MILES • 6 CYL • 4WD • AUTOMATIC
Avatar
AKUHLMAN
  • MEMBER
  • 1 POST
As soon as winter hit we found that the heater blows cold air. The thermostat has been replaced and still no heat. What could go wrong with this system? I am freezing!!
Dec 12, 2007 at 4:25 AM
Advertisement
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Could be a clogged-up hose or the heater core, heater contol valve, air/blend door stuck close.
Dec 12, 2007 at 5:45 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.