Steve,
It looks like the interior color Pulsar Gray was only used in 1954 Chevrolet trucks. Pulsar Gray was the 1954 deluxe interior color in regular cabs and the standard/only interior color in 1954 Suburban cabs.
The 1955-1st Truck Data Book only lists Pearl Beige for all interiors.
A gray interior color (but not Pulsar Gray) was used in Panel Trucks in almost all Advance-Design years (supposedly not in 1955-1st).
What model 1952 truck do you have?
