GMC had a red called Pimpernel Scarlet from 1938 to 1952 according to a list I have. I don't know if Canadian trucks had the same colors. The sheet I have says PPG library number should be DU 93-2262R. If you have a PPG dealer near you, such as a NAPA store, etc. they may be able to get the information from PPG and mix you a sample and see if it looks like what's on your firewall. Also, the paint dealers often have a color matching gun and can get a good code by scanning an area of good paint on your truck. They need about a credit card size spot to scan.
