Quote:
Originally Posted by paulspickupparts
What year is your parts book? If it is 69 it will only show up to 69 . If it is later it will show all years.
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This is what I figured as well. 69-72 are the same, but future years would not be mentioned. My '79 edition lists 6491402 as 69-72 Ser. 10 thru 30, Blazer (exc. speed warning, tach, gauges, FFC, D-D). 6491404 is listed as 69-72 Ser. 10 thru 30, Blazer w/gauges, tach (exc. speed warning, FFC, D-D, Cheyenne). 6491403 is listed as 70-72 Blazer w/tach, gauges. I'm not sure why your '72 book doesn't list it this way