General ABS question

[93_Burrito]

Just wondering... what year did GM add ABS to its light-duty trucks? I guess GM started with rear-wheel only, then moved on to 4-wheel later. But when did it all start?

[murphyslaw]

I know my 88 GMC 1ton has R-ABS

[Subzilla]

My '93 S15 Jimmy has ABS.

[Colorado Kid]

I believe the magic years are 1988 for RW-ABS and 1995 for 4-wheel ABS. That's in the C/K series 1/2 ton pickups.