2004 Gmc Envoy Recently Had Heater Core Replaced Envoy Heat Gets Hot Does Come

2004 GMC ENVOY
166,000 MILES
Avatar
DCANDMC01
  • MEMBER
  • 1 POST
I recently had the heater core replaced in my Envoy. The heat gets hot but does not come out very fast. I was thinking it was the blower motor but if I turn the air condition on the air is cold and blows out really fast, but as soon as I turn the temperature up to 90 degrees to turn the heat on the air diminishes.It sounds like its blowing out fast but its not. With this also the vent in the rear passenger console only blows out warm air and will not get hot. Any ideas what could be causing these problems?
Jan 14, 2013 at 2:16 PM
Advertisement
Avatar
WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
That may be because it is being redirected to multiple other outlets when in heat mode.
Jan 14, 2013 at 2:47 PM
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.