the engine is getting to temp but cold air is coming through heater. on 2003 GMC Sonoma

when the engine is started when warm we get a little heat but that stops after a couple of minutes.

by in Indianapolis, IN on November 12, 2012
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer
ANSWER by , November 12, 2012
possible blend door