2000 Chevy Blazer Heater trouble

Tiny
NIEMEYER84
  • MEMBER
  • 2000 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 168,000 MILES
Quick question: What could be the cause of my heater only working if I am moving at a constant speed of around 60mph or more?
Friday, December 5th, 2008 AT 3:56 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi:
One of the most common reasons heaters only heat when the RPM's are high is due to low coolant. If you checked that and it's fine, keep an eye on the temp gauge and make sure the engine is staying in the normal operating section. If it's running cool, replace the thermostat.

Joe
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Sunday, December 7th, 2008 AT 12:53 AM

Please login or register to post a reply.

Related Heater Content

Heater
GUIDE
Heater
Once the engine has been started and has run long enough to warm up the hot coolant is transferred into the heater core which is located inside the passenger compartment via...
VIEW MORE

Sponsored links