Those 2 vehicles I worked on did. I would figure that the axle flanges are the same
Both of those were unmodified factory 10 bolts with 11 inch drums..
With that being said, the bare axle housings 95 or 96 up were the same. Maybe 88 to 94 C/K had a different flange? IDK. I believe it is...
At least the 4L60e was NOT a 700r4 so you were not accused of adjusting it improperly! I believe 94 was the first year of that. My 98 4.3L W/T longbox is chugging away at only 195k. My 98 C1500 xcab 5.7 from TX is at 472k and runs awesome as well. Those are great first trucks if not rotted away!