Get Free Technical Service Bulletins. CarMD offers a complete library of TSBs for all makes and models of vehicles sold in the US since 1996. If you’re not sure what a TSB is, here is a good description on Wikipedia. Enter vehicle year make model below to get started.
OBD 1. OBD1 Codes Retrieval (Pre-1995 Cars and Trucks) GM GM 1983-95 vehicles OBD1 codes selfretrieval As the name implies, you can get the codes for GM cars or trucks yourself if the model of your vehicle is made before 1995, this means as soon as you see check engine light in your dash, you can get the code in minutes if you want.