Spring Codes
The certification labels didn't carry the spring code information until March 13, 1981 (or maybe 1982?). So, if your truck was made prior to that date your certification label will not have that information. For instance, Dad's truck was made in September of 1980 and it says "1981" in the area that is shown below as "Spring". I'm not sure how accurate that date is, especially given the wide range of dates that the turn signals and door locks changed, but since it is called out very specifically I'm inclined to believe it. |