| Intermittent Heat - 2002 Chevy Blazer Is there any logical reason the heater in my Blazer would only blow hot air while my foot is on the accelerator? While I'm driving, it seems fine, but when I'm idling at a light, the air blows cold. Or, maybe it's just intermittent and coincidental regarding the accelerator. Any ideas on what this might be and how to fix it? |