GM Volt Forum banner
1 - 5 of 5 Posts

·
Registered
Joined
·
3 Posts
Discussion Starter · #1 ·
Gen 1 Ampera/Volt 2015/32k miles
When I press the power button, a loud hum starts about 3 seconds after. It stops if I either set the cabin heater Blower fan to 'OFF' or reduce the temperature to 'LOW'. Local Ampera (it's a UK car) Service agent changed the cabin blower motor fan (under the dashboard) but noise remains - and appears to be coming from under the left front end. Anyone know what fan, pump or motor is controlled by the Climate Controls beside the cabin Blower fan? Anyone had this problem? What was the cause? Otherwise, Ampera/Volt is an ideal car for my usage. Thanks
 

·
Registered
Joined
·
2,014 Posts
Sound like the auxiliary coolant pump. They can get noisy. When they fail, you won't get cabin heat in EV mode.
 
1 - 5 of 5 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top