Possible air pocket in cooling system. GMC Tech. Bullitin suggest, drilling a 1/8 hole, in the thermostat flange, to allow, for system bleeding, after cooling system work, has been done.


Spanky Hardy
Collector Of Fine Old G.M. COE Trucks & Antique Holmes Wreckers

1948 Chevrolet 5700 COE Holmes HD W35 Wrecker
In the Stovebolt Gallery
More pictures on Photobucket

1950 GMC 250 1-Ton
In the Stovebolt Gallery