Buehler Motor said it has contracts with General Motors  to provide customized auxiliary water pumps for the Chevrolet Volt Extended-Range Electric Vehicle and some GM hybrid vehicles. Production of the Volt is expected to begin in late 2010.

Buehler will provide custom 12 W and 50 W auxiliary water pumps for the Volt and GM hybrid vehicles. It said it has worked with GM since mid-2007 to customize the water pump technology necessary to circulate coolant through the Volt's subsystems.