A heater valve just sold on eBay tonight for $42.50. You can also find rebuildable ones at swap meets if you look hard enough. I bought two deluxe heaters (one '47-'53, one '54-'55.1) and a decent valve at a swap meet a few years back for about $30.

It also depends on the heater - if you don't have the Deluxe "fresh air" heater, I don't think there is supposed to be a valve, except for a shutoff in the engine bay. Only the fancy heaters had anything more than a fan control.


Get a REAL truck, get a GMC! www.oldgmctrucks.com
1954 GMC De Luxe COE