Hello, bit of a noob here, i own a 2005 Blazer absolutely love it, however every start up i smell coolant through the vents, what is the possible cause of this? Also when driving in summer on a particular warm day it tends to overheat, thank you in advance.

 

The two most likely causes are a heater core leak or the LIM gaskets. Do the windows fog up on defrost? Is the carpet wet anywhere up front?


George

 

Thanks for the reply , the windows fog but no wet carpet.

 

Heater core would be my vote. Had mine go out twice. Not a fun job, but a bit expensive if you have a shop do it.