[Captkaos]

From what Jeff indicated to me he was looking for major changes in the model run. Slight changes are going to happen though. It is a general guideline for the years, some of the stuff you are mentioning though I am trying to document for another page, but don't have pictures of everything and a page put together.

Some discrepencies are going to happen. For example, GM "officially" stopped using 12botls in 1981, but there are 82's that have them.

As for the rain gutters, when the truck was designed in 1973 there was none upon release, but one of the engineers (can't remember his name now) found that rain entered the cab and designed these gutters that would bolt on, but GM didn't want them, so he pattened it on his own sold it to dealers the first year. After GM noticed the response, they started putting them on from the factory in 1975, before that they were dealer installed.

As for the gas cap exposure, I listed it as 1978 because that is when it "started" for the Blazers/Jimmys. BTW, my 1978 Jimmy has the door.