Hi Guys, The wipers on my '52 GMC don't work at all. I assume they are the vacuum type. Is there an electric motor involved or is it all vacuum? My trucks heater says Airin on it and when I turn the switch on it blows....but barely. The high speed sounds like a low speed on anything else. Is this normal? Thanks in advance, you guys are cool. Terry1218


Terry A. Dudash

1952 GMC 5-Window 1/2-Ton