spring wind clock

In contrast to 1954-1955 Chevrolet trucks, the same year GMC had a position in the dash for an optional gauge. It was here that larger GMC's had a tachometer or vacuum gauge installed. The 1/2, 3/4 and 1 ton GMC's usually did not require these engine gauges and a blank-out plate is normally found there. An option here in these smaller trucks is a spring wind clock. It was produced by General Motors and installed at their GMC dealerships.