Boy, I have a real problem child here. Customer came in saying there was a 'thumping' noise under the dash. I've managed to pinpoint the noise to the heater core. It sounds like an old steam radiator thumping and rumbling. The noise is at it's worse when the e...

FIX posted 1/9/2001

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle