2002 GMC Sierra blower blows cold air

2002 GMC SIERRA
70,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
NATE10
  • MEMBER
  • 1 POST
Do I change the thermostat?
Jan 28, 2010 at 9:24 AM
Advertisement
Avatar
TOOOMANYTOYS
  • ✓ASE Certified Mechanic
  • 513 POSTS
  • ASE Certified Mechanic
When vehicle has been run for awhile what does the temp gauge say around 210? If cooling system is not overcooling. It may have a clogged heater core, or a sticking temperature actuator
Jan 28, 2010 at 9:33 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.