I am helping to restore this fire truck. I am not 100% sure, but I think it is a 2-ton chassis. I'm looking for sources of technical information, shop manuals, etc. for this big truck chassis. I still has mechanical brakes, if that helps narrow down the year or chassis weight rating. Does anyone have a website dedicated to the big trucks from this era? Thanks for your help! Jim
You can try this website, not as active as it once was, but there a few big GMC guys on there. https://oldgmctrucks.infopop.cc/eve?s=272004236
I also have some literature on large GMC trucks, Fire Engines were generally built on T-18, T-23 chassis. What is the model of GMC that you have?

