when did gm change over to 6 volt

When did GM change trucks and cars over to 12 volt.

 

I believe most manufacturers initiated the change from 6 to 12 volts in 1955-56

 

In the GM cars, the Cadillac, Oldsmobile and the large Buicks (Super and Roadmaster) went to 12 volts in 1953. Buick Special, the last of the straight eights, used 6 volts for 1953 and then went to 12 volts in 1954. Chevrolet and Pontiac last used 6 volts in 1954. I would guess pickups were the same as Chevrolet and began with 12 volt in 1955?

 

all chevs were 12 volt in 55

 

First series '55 Chevy/GMC trucks, the last of the AD series, were 6 volt. Second series '55 went to 12 volts.

 

What Randy P said

4TTRUK

 

38fordpickup is correct plus the 1955 6 cylinder Corvettes all 7 of them!

 

Thanks guys good info. My friend says 1965 he is misinformed

 

Maybe your friend is thinking about generators to alternators...

 

Was Ford a day late and a dollar short?

 

1954 Models were 6 volt; 1955 Models were 12 volt.
Normbc9

 

Then and now.

 

Are you talking about ford or chev.?